The SNOW BLOWER Shop, Gilson Snowblower Parts Department

Welcome to the Gilson Snowblower Parts Department

Repair Parts for Your Gilson Snowblower
Parts - Documentation - OEM - Reproductions - Used - Engine
If you can't find what you need write and inquire.

Except where stated this site is in no way affiliated with any of the products or companies mentioned or depicted within except as noted.

Genuine Gilson Parts * Part Diagrams * Used Parts * Gilson T-Shirts * V-Belts * Idler Rollers * Idler Rollers Rebuild Kit * Shell Idler Roller Kit * Idler Arm Pivot Kit * Shear Pins * Skids * Scraper Bar * Drift Cutter * Chute Rollers * Chute Rings * Impellers * Impeller Tips * Main & Jackshaft Bearings * Auger Bearing * Friction Wheel * UniTrol Axle Bearing * UniTrol Axle * Roller Chain * Snow Cannon * Worm Gears * Foote 1543 Gears * Paint * Decals * Tires and Tubes * Engine Items * Fuel System * Compression * Ignition System * Tools and Manuals

This page represents the most common Gilson snowblower repair parts. The most common engine items are found near the end of this page. They come from a number of sources including what you can buy locally, genuine OEM items, aftermarket parts and a growing collection of parts that I have designed to fill the remaining gaps. Most items include links so you can order what you need. I provide as much information as possible as to their application and compatability but I accept no other responsibility or liability. There is additional part information on my FAQ page. This collection of these parts will continue to grow. When in doubt write and ask. Don't hesitate to send photo's.

GENUINE GILSON PARTS:
Since a series of acquisitions that occurred in the late 1980s the LawnBoy Division of the Toro Company has been the keeper of the Gilson legacy. At the present time, some 20 years after Gilson Brothers Co. ceased to exist many genuine OEM repair parts do continue to be available. As parts continue to become obsolete we are introducing parts to fill the gaps and to help keep your Gilson in service. These items are marked by the "Sold By: The Gilson Snowblower Shop" header.

I frequently find that much misinformation surrounds the availability of repair parts for Gilson outdoor power equipment. Owners frequently tell me of local dealers who resist supplying vintage parts in hopes of selling a new machine. For those of you who do not have a local LawnBoy dealer, have one that is Gilson phobic or just prefer to shop online I have great news. M&D Mower is now a source for these parts. M&D Mower has been on the web for many years selling parts. If you contact them by phone be sure to mention that you learned about them on "That Gilson Snowblower Website".

M&D Mower is not equipped to research your parts needs. If you do not have a parts breakdown you can contact LawnBoy to get a manual using these instruction. I am also able to provide complete sets of part diagrams and lists for most machines as described here. If this is not practical you can contact me with your needs and I can provide the required numbers at your risk. To help insure accuracy be sure to include the Model Number from the tag and / or include some photo's of the machine or the part(s) in question. There were many models over the decades without positive identification misunderstandings can occur.

As part of bringing the Gilson Legacy to LawnBoy all of the Gilson parts needed to be renumbered to work in the LawnBoy distribution system so there is a cross referencing step that is needed. M&D is working to automate this. Meanwhile if you e-mail to me your Gilson numbers I can provide the corresponding LawnBoy part numbers. By using the LawnBoy numbers current availability and price can be checked by searching here.

In general a large portion of what I consider to be wear & repair parts do remain available certain items such as castings and major sheet metal parts that almost never fail have become obsolete. For items such as this consider contacting me about getting a used part. As critical parts become obsolete we are exploring the production of reproduction parts to service the fleet. Also, by looking farther down this page you will find information about some of the most common Gilson and engine parts needs.

PART DIAGRAMS:
Genuine part diagrams are available in PDF format. See details here.

USED PARTS:
From time to time I acquire machines that due to incompleteness or overall condition simply will never be running machines again. These machines get parted down to support surviving machines in my collection. Over time I have accumulated surplus quantities of some items including many that have not been available for years. Let me know if you are in need of a discontinued Gilson snowblower part. All inquiries are handled on a case by case basis.

Gilson T-Shirts
Now in stock for immediate shipment Sold by the Gilson Snowblower Shop Kit

Show your enthusiasm for your Gilson power equipment with this silk screened T-shirt inspired by a genuine dealer sign from the 1970's. Sure to be appreciated by owners of Gilson Snowblowers, Tractors, Tillers, Mowers, Snowmobiles, Mini-Bikes, Log Splitters, Cement Mixers and more.
These are professionally silk screened Gildan 100% Ultra Cotton Tee Shirts.

$15.00
Plus Shipping to US and International destinations

Select Size

Click for more Tee shirt information.

Click image for more Tee Shirt information.
Available in M, L, XL, XXL

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V-Belts
Listed below are ordering links for the most common Gilson snowblower models. Each model description includes a link to the Gilson Family Tree page that corresponds to the model family the belt will fit. Use these links to confirm your machine family. Farther down the page you will find links to other common Gilson snowblower belts that are not as easily classified.

I have included both the original Gilson and current LawnBoy/Toro part numbers of these belts. If you are not sure if a belt will be right for your machine be sure to contact me with the model number from your machine ID tag or lacking that a snapshot or 2 of the machine and I will be happy to identify the needed belt.

See my FAQ page for other important belt information.

BELTS FOR COMMON MODELS

A
2 stage Early Gear Drive models, 1 speed, 5 HP Briggs & Stratton Engine

Traction Gilson # 13009 is now LawnBoy/Toro #703569

Blower Gilson # 13009 is now LawnBoy/Toro #703569

B
2 stage Early Gear Drive models, 1,2 speed, 6, 7 or 8 HP Briggs & Stratton Engine
2 stage Gear Drive models, 3 speed, 8 HP Briggs & Stratton Engine
2 stage 32 inch Gear Drive models, 3 speed, 10 HP Briggs & Stratton engine

Traction Gilson # 10755 or 17569 is now LawnBoy/Toro #703636

Blower Gilson # 10755 or 17569 is now LawnBoy/Toro #703636

C
2 stage Gear Drive models, 3 speed, 10 HP Tecumseh Engine

Traction Gilson # 13009 is now LawnBoy/Toro #703569

Blower Gilson # 13009 is now LawnBoy/Toro #703569

D
2 stage UniTrol models, 3 or 4 speed, 5 HP Briggs & Stratton Engine

Traction Gilson # 16366 is now LawnBoy/Toro #704415

Blower Gilson # 14790 is now LawnBoy/Toro #703621

E
2 stage UniTrol models, 3 or 4 speed, 7 or 8 HP Briggs & Stratton Engine

Traction
(11 & 12 inch Tires) Gilson # 16146 is now LawnBoy/Toro #703627

Traction
(16 inch Tires) Gilson # 37230 is now LawnBoy/Toro #704903

Blower Gilson # 16386 is now LawnBoy/Toro #703632

F
2 stage UniTrol models, 3 or 4 speed, 10 HP Techumseh Engine

Traction Gilson # 37169 is now LawnBoy/Toro #704893

Blower Gilson # 14790 is now LawnBoy/Toro #703621

G
2 stage Single Speed Friction Drive 4 or 5 HP Briggs & Stratton Engine, 18-24 inches wide
(Applies only to models where the engine pulley is the same for both belts and the blower pulley is part of the impeller.)
E-mail with your model number for others.

Traction Gilson # 18055 is now LawnBoy/Toro #703639

Blower Gilson # 18055 is now LawnBoy/Toro #703639

H
Single stage Vertical Shaft Engine - Single Stage 3-1/2 HP Briggs & Stratton Engine, 20 inch

Traction Gilson # 35544 is now LawnBoy/Toro #704768 - Discontinued - No Substitute on file

Blower Gilson # 35545 is now LawnBoy/Toro #704769

J
2 Cycle Snow Cannon owners please click here

OTHER COMMON GILSON SNOWBLOWER BELTS

Idler Rollers
Gilson snowblowers built from the mid 1960s through the mid 1970s used a steel roller and bronze liner running on a polished race to apply tension to the V-belts. This design worked well for over this time years as long as the rollers were opened up and greased every few years. The earliest ones used a solid smooth race. Beginning in the early 1970s a grease grove was added to nourish the oil impregnated bushing. Even neglected they would last quite a while. If your bronze lined idler rollers have not failed to the point of ruining the steel roller or the inner race but are showing wear we offer a rebulid kit for these.

In 1977 the roller maker plated the rollers incorrectly and the oil was sucked out of the bushing causing very premature failures, like in a few hours of use. In response to this fiasco a ball bearing upgrade kit was created, it is still available below.

Machines built after the mass bearing failure used a stamped steel idler assembly with sealed bearings. They mount onto a threaded stud that is welded to the arm and are secured with a lock-nut. The roller is Gilson # 31625 now LawnBoy/Toro Part # 742678.

The following pictures detail these 3 varriations of the idler rollers. I have used the traction idler of a Uni-Trol machine to illustrate the configurations but they are common to blower section as well as gear drive series machines.

1st Generation Bronze Liners circa pre1978

This original configuration consisted of the following:

An idler arm with a welded stem that includes a groove for the retaining ring
The polished race is pressed onto the stem of the arm. This is the surface the bearing runs on officially called the IDLER BUSHING, # 10471 (obsolete)
Pressed into the idler roller is a bearing. The oil impregnated bronze liners officially called the BEARING was # 10472 (obsolete)
The solid steel roller officially called the IDLER is # 10473 (obsolete) (The IDLER with a BEARING pressed into it was available as a subassembly officially called the IDLER BEARING ASSEMBLY as #10532 (obsolete)
A thin spacer washer sits in the recess of the roller
An external retaining ring holds the assembly on the stem
These items are now all obsolete as OEM repair parts but we offer several options that will keep your machine up and running. The Idler Roller Rebuild Kit allows you to refresh and maintain idlers that have not suffered a catastrophic failure. If your idlers have failed or if you would like to cut back on maintenance then the Shell Idler Kit is for you.

IDLER ROLLER REBUILD KIT Sold by the Gilson Snowblower Shop Kit

If the inner race and roller have not been ruined in a catastrophic failure you can rebuild your idler rollers with this rebuild kit that I am offering. It consists of the oil impregnated bronze bushings, retainer washers and retaining rings along with grease and instructions. All of the materials needed to renew 2 rollers are included.
In addition to Gilson branded snowblowers these parts can be found in an number of other Gilson built brands. Gilson built machines under the many brand names shown here.
$14.00
Plus Shipping to US and international destinations

Idler Kit
Includes replacements for :
(2) Bearing # 10472 (LawnBoy Toro # 704179)
(2) Washer # 10474 (LawnBoy Toro # 700812)
(2) Retaining Ring # 1042 (LawnBoy Toro # 700097)
Plus grease, spreader stick and instuctions.

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Maintaining Bronze Bushing Idlers
Early versions of this assembly (~ pre 1972) had inner races without the grease reservoir groove as shown here.
If your machine has the bronze bushing liner idlers regular maintenance is very important. I recommend servicing them every 2 years. Remove the snap ring and clean all parts. Using a socket or other driver press the bronze bushing out through the flat side slightly (.010") so that it makes contact with the arm before the main roller can. This reduces friction, heat and wear. Repack the groove with good #2 bearing grease. Be sure to apply a film of grease to the back of the idler and to the recess where the retaining washer will ride. Given regular care these idlers will continue to provide good service.

Shell Idler
(Sealed Ball Bearing Idler Upgrade Kit)
Sold by the Gilson Snowblower Shop Kit

If your machine has the original style bronze bushing lined idlers and they have failed or if you want to make your idlers maintenance free this is the solution. All you need is a decent snap ring groove and the 1 inch stationary race (with or without grease groove). The race may be scorched, scraped or galled but it must be there for the bearing to mount on. This kit will end your idler woes for good.
This design was an original Gilson field upgrade introduced in 1978 as Gilson part number 89400 which became LawnBoy/Toro number 742687. The genuine kit is still available but the OEM price has climbed steadily. Many owners have written to tell me that they just can't justify the investment. I went to work on this and I'm now offering an identical kit for 2/3 the cost. You can save even more if you buy a pair! The pricing for a pair incudes a $5.00 discount and the pair ships as 1 item reducing your shipping cost. Be sure to use the pull down menu above the "Add to Cart" button to get the pair price.
This kit replaces the following Gilson & LawnBoy part numbers; 10472, 704179, 10474, 700812, 1042, 700097, 10473, 10532.

Salvagable Arms
Take your old arm (blower or traction) with a usable snap ring groove and a recognizable inner race.
Kit Contents
Add a shell idler kit
Shell Idler Kit Installed
You have salvaged the arm and slashed maintenance on your machine.

One shell idler kit rebuilds 1 arm
Kit Contains:
Shell with sealed ball bearing insert
Spacer
Wave spring
Retaining ring
Instructions
Contents of 1 shell idler kit In Stock for Immediate Shipment
$40.00 or 2 for $75.00
Plus Shipping to US and international destinations

Quantity

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2nd Generation Stamped Idler circa 1978 and latter

Late model Gilson machines utilized a next generation idler design. The arms remained essentially the same except that a threaded stud was welded in place instead of the stem with snap ring groove. The Idler roller consists of the following:

Arm with stud
Stepped round spacer
Stamped roller with sealed ball bearings
Retaining washer
Locking jam-nut
The parts are simply assembled with no user lubrication required. If one must be replaced order Gilson # 31625 now LawnBoy/Toro Part # 742678. NOTE: This aftermarket item is not a perfect drop-in replacement. The center hub needs to be ground back to provide the correct alignment but the part will get the machine back in service.

IDLER ARM PIVOT REBUILD KIT
For Early Gear Drives
Click here to see the arrangement this kit fits. If your blower is controlled by the small lever near the chute then this kit is for your machine.
Sold by the Gilson Snowblower Shop Kit

As the Early Gear Drive machines age the pivot bushings that the belt idlers run on can loosen. this wil cause erratic belt tracking and result in the roller falling under the belt or the belt getting thrown from the pulley. This kit includes the material to restore the pivot motion to like new condition. Instructions are included.
In addition to Gilson branded snowblowers these parts can be found in an number of other Gilson built brands. Gilson built machines under the many brand names shown here.
$22.00
Plus Shipping to US and international destinations

Idler Kit
Kit includes:
(1) Shaft - Idler Arm # 10470 (LawnBoy Toro # 704176)
(4) Idler Arm Bushing# 10516 (LawnBoy Toro # 703369)
(2) Cotter pins
(1) Cotter pin
(1) Loctite Bearing Mount Compound
Instuctions.
Download photo explicit instructions.

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Shear Pins
Gilson 2 stage snowblower shear pins fall into 2 categories only one of which is still available as an OEM part.
Shear pins for the smaller machines with gearcases as shown here are no longer available. A 1/4" soft steel bolt which will not have any hash marks on the head can be used as a substitute. Install it with a locknut but do not tighten it to the tube. It should be a slightly loose fit.
Larger machines such as the Gear Drives and most multi speed speed UniTrol friction drives use a 5/16" shear pin and the original part is still available. It is Gilson part number 104017 which is now LawnBoy/Toro # 700280 and can be ordered with this link.

Large Shear Pin

Skids

The SKID DOCTOR
Cast Iron Skid Refurbishing Sold by the Gilson Snowblower Shop Kit

These are the cast iron skids used on Gear Drive models from 1966 into the mid 1970s. The Gilson part number is 10381 and it became LawnBoy/Toro # 703360. This item has been out of producton for many years. To help bridge the gap I am offering a skid reconditioning service. Running with worn skids will wear the scraper bar and result in damage to the bucket welds. It's also no fun to use a machine when it's snagging and bucking. Running on good skids will be more efficient.
The way it works is as follows. Click on the "Add to cart" button and order the service. I will respond with my shipping address. Ship your skids. I suggest a USPS small flat rate box. For $4.95 it will get your skids to me within 3 days. I will reface your skids with 3/16 steel stock. If available I will repaint them to aproximate the original color. Alternatively they will be satin black. I will ship them back via priority mail within a week of arrival.
Welding is not my day job but I have been doing this for years and they hold up well. This service is only for the cast iron skids. The stamped steel skids are still avalable below as OEM parts. If you have any questions please ASK BEFORE ORDERING.
Cast Iron Skid before repair
Cast Iron Skid after repair
$30.00 Per Pair
Plus Return Shipping to US and International destinations

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This is the most common Gilson skid and it is still available. It was used on all UniTrol machines and on Gear Drive machines starting in the mid 1970s. If your original skids have 3 square holes this is the part. It is Gilson part number 13888 which is now LawnBoy/Toro # 700285 and can be ordered with this link. NOTE: This will also fit some tractor attachments but check the part number before ordering. Large Skid
Small Skid These 2 slot stamped steel skids were used on the compact models. It is Gilson part number 18006 which is now LawnBoy/Toro # 700053 and can be ordered with this link.

Scraper Bar - 26"

This is the scraper bar used on 26 inch Gilson built snowblowers. Included are the Early Gear Dives, Unitrol and Late Model Friction Drive units. They are still available as an OEM part. This part is 1/4" thick steel and 25-1/2 inches long. Bolt holes are at 1/2", 7-3/4", 12-3/4", 17-3/4", 25". It is Gilson part number 10380 which is now LawnBoy/Toro # 700282 and can be ordered with this link.
Snow Cannon owners see here.
26 inch scraper bar

Drift Cutter

The drift cutter was standard on most of the Gilson Gear Drive and UniTrol models. If yours has been damaged or your model did not come with one they are still available as an OEM part. It is Gilson part number 10382 which is now LawnBoy/Toro # 700284 and can be ordered with this link. This part is 21 inches long.

Chute Rollers
Sold by the Gilson Snowblower Shop Kit

If you have a Gear Drive Gilson with the cast iron chute base as shown on the right it's important that you maintain the brass hold-down rollers. These rollers are mounted under the chute base and serve to hold the chute down on the ring while allowing it to rotate under load. Over time the rollers will stick and flat spots will develop. Once they begin to wear they no longer hold the chute down as designed. This can result in sloppy handling or premature ring failure. The increased vertical clearance also compromises the mesh of the pinion with the chute base ring rear resulting in pinion wear. Keep your chute in good condition by replacing these rollers if they are worn. It was Gilson part number 10385 which became LawnBoy/Toro # 704166 it is now obsolete.
We are pleased to offer these reproduction parts machined from solid brass just like your originals.
Gear Drive Chute

Roller Pins
Chute Roller Pin Do you need to replace any of your Roller Pins at the same time? We have a supply of used pins with fresh lockwashers that I can include in your kit with no exra S&H. Just select one of the pin options in the "Add To cart" button to the right. These are Gilson part number 10386 later listed as LawnBoy/Toro # 704167.
Gear Drive Chute Roller
In Stock for Immediate Shipment
$15.00 for a set of 3
Plus Shipping to US and international destinations

Pin Options

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Chute Rings

These are the rings that the discharge chutes mount to. Occasionaly after hard use a ring can fail. In order to permit repair Gilson made this component of the weldment available as a service part. Installation requires grinding the remnants of the old ring away then positioning and welding the replacement to the collector discharge. These 2 rings cover all Gilsons that have ring mounted chutes on 6 inch outlets. This excludes 1969 - 1971 UniTrol models that had an alternate mounting means.

Chute Ring for chutes with cast iron bases Sold by the Gilson Snowblower Shop Kit

If your chute base is of this style:
Gear Drive Chute You need this ring:
Pinion Driven Chute Ring
This part is obsolete as an OEM item but we have them available as a reproduction part. This item replaces Gilson part number 10374 which became LawnBoy/Toro number 704164. Instructions are included. Welding is required. They are on hand for immediate shipment. Sold by the Gilson Snowblower Shop
$25.00
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If your chute base is of this style:
Worm Drive Chute You need this ring:
Worm Driven Chute Ring

It is Gilson part number 24285 which is now LawnBoy/Toro # 700570 and can be ordered with this link.
As an alternative the heavy duty Gear drive ring, 10374, shown above can be used with a minor accomodation. Until I get the details online please write and ask what is involved.

IMPELLERS
10-1/2 & 12 inch Sold by the Gilson Snowblower Shop Kit

Impellers are Here!

The Gilson impellers shown here have been obsolete for a number of years now. Sometimes after heavy use or an unfortunate encounter with buried debris they can get damaged beyond repair. This has resulted in many machines being retired before their time. All impellers are of the gear dive design shown below to the left as #10408. They are available in the original 12 inch Gear Drive format and in a 10-1/2 inch version tailored to fit the UniTrol and Late Model Friction Drive machines.
All components are professionally machined, laser cut, formed and welded. To ensure an even longer life we have taken most steel gauges up a notch and that was on a design that already had a legendary track record. Each impeller is mounted and spun in the working speed range to check fit, balance and run-out. They are primed and finished satin black. 2 new square head set screws are provided.

10408, 12 in Gear Drive Impeller 14849, 10-1/2
Gilson part # 10408 (LawnBoy/Toro #741218) is the 12 inch impeller used on Gear Drives including 1 and 2 speed Early Gear Drive and 3 speed Gear Drive models from 1966 to 1987. The actual diameter of these impellers is 11-3/4". Other than being of heavier gauge steel this is the same as the original part.
Questions? Please ask.
$190.00
Plus Shipping to US and International destinations (see note below!)

Do you need a new Main Bearing?

Gilson part # 14849 (LawnBoy/Toro #740011) is the 10-1/2 inch impeller used on the UniTrol and Late Model Friction Drive machines. The original Gilson design of this part is not practical for small scale production. This part is a scaled down version of the 12 inch gear drive impeller shown to the left. In addition to being reproducible this design is more durable. This part was also used on some LawnBoy models built on Gilson designs in the late 1980's after the Gilson acquisition.
I have installed one of these in a machine and the performance is exciting. With the flat back plate there is more room for snow to flow through the impeller housing. This goes beyond being a repair part, it's an upgrade!

Questions? Please ask.
$175.00
Plus Shipping to US and International destinations (see note below!)
Do you need a new Main Bearing?

Shipping Note: In order to maintain my low shipping price structure I have had to include some of the shipping cost in the selling price of these uncommonly large items. You will be pleasantly surprised when you see how little is added for shipping at check-out. Local buyers (southern Maine) can contact me for local pick-up pricing.

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Impeller Tips
For 12 inch Gear Drive Impellers
Sold by the Gilson Snowblower Shop Kit

If your Gear Drive impeller had an unfortunate encounter with debris and the tips are folded over a set of these tips can be used to refurbish your otherwise sound exisiting impeller. These tips are laser cut and formed identical to the replacement impeller sold above. They are designed to self position at the top of the gusset and provide a generous overlap for strength and easy welding.
Just cut the old tips off even with the top of the gusset, straighten any remaining distortion then prep and weld. "How To" Illustration

An impeller repaired with a set of new tips.

New tips on a Gear Drive Impeller Set of 4 $25.00
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Do you need a new Main Bearing?

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Main Impeller Bearing
&
Gear Drive Jackshaft Bearing
Sold by the Gilson Snowblower Shop Kit

This 3/4" self aligning sealed bearing with eccentric locking collar is used right behind the impeller on 1,2 & 3 speed gear drive models and 5-10 HP multi-speed UniTrol models. They commonly require replacement when the machine is 25-30 years old depending on usage.

RA012RRB+COL On the 2 speed gear drive models such as shown below under "roller chain" this bearing is used at each end of the 2 speed jackshaft.
On Unitrol models the bearing is listed as #12539 / 700542 "bearing". On gear drive models it is listed as #10416 / 741219 "bearing asssembly, this is the bearing and the 2 mounting flanges. In all cases the locking collar is listed as #1426 / 701658. The replacement item is Fafnir # RA012RRB+COL and can be ordered here to the right. These are genuine Fafnir bearings, just like the factory used.
More often than not there is not enough space to safely pull this bearing out when making a repair and it gets destroyed in the process. That being said it's best to plan on replacing it whenever it gets disturbed.

If your flanges (12538 / 700083 have been damaged I offer the bearing with 1 or 2 good used flanges in the pricing options to the right.

Used fafnir Flange $20.00
Plus Shipping to US and international destinations

Flange options

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What's that eccentric collar all about?
The purpose of the eccentric collar is to make sure that the shaft rotates with the inner race of a bearing. Often when bearings fail they get stiff and the shaft rotates in the race ruining the shaft. If you keep the inner race and the shaft connected then the shaft is protected until the bearing is really really bad at which point the neglectful owner gets what they deserve. This sort of system allows the shaft to be sized for a close slip fit in the bearing making assembly and disassembly easier than if it were a press fit.
Each part of course has a round hole that fits the shaft and that is straight forward enough. The bearing has a boss of a larger diameter and it is eccentric, meaning that it is off center. The collar has a counter bore, or pocket that matches the boss in diameter and eccentricity.
To apply the locking collar you assemble the system with both parts on the shaft such that the collar mates over the bearing boss. This will mean rotating it to the position where the eccentricities align and they engage. You then locate the drift hole in the collar. This is a blind hole, not the set-screw. Using a drift pin and hammer (or a spanner wrench if you are fancy) you whack the hole to drive the collar in a clockwise direction. Since the main bores of each item are on the shaft the 2 eccentric features are in conflict as you drive them out of phase. Since they cannot rotate they exert large side loads binding each other against the shaft and forming a solid union.
Note that it can be tightened in either direction but should be done clockwise to preserve the right hand thread mentality for the next person taking it apart. Once the side loads are established just tighten the set-screw to safeguard against vibration. To de-couple the system you back off on the set-screw and whack the drift pin hole counter-clockwise looking for it to shift slightly. With a little bit of movement it will slide right off assuming things are not corroded and the shaft will again be free in the bore. Be sure to dress the slight set-screw divot in the shaft with a file before trying to slide the bearng past that point.
It is a very effective system that does less shaft damage than set- screws and is simpler than slip collars and other methods.

Auger Bearing
Sold by the Gilson Snowblower Shop Kit

These are the auger shaft bearings used on all UniTrol models, Late Model Friction Drives with 1 inch auger shafts, Gear Drive models from aproximately 1975 onward and Late Model Gear Drive units. The original part, # 14845 which became LawnBoy/Toro number 700283 was of sintered (pressed metal) construction and is not practical for small scale manufacturing. We have created a direct replacement with a machined high strength aluminum shell. The shell contains an oil impreganted bronze bushing and includes a grease fitting. The oblong flange has been replaced with a round shape to manage costs. The shell is anodized to stand up to the environment. While we were at it we moved the grease fitting over a bit to make it easier to use. They may be used individually or in pairs. These are direct replacements requiring no modification. Save $5. when you buy a pair and the pair ships as 1 item for further savings. Be sure to use the pull down menu above the "Add to Cart" button to get the pair price.
Do not confuse this item with the smaller version that does not have a through bore. If you need the cast iron heavy duty ball and scocket version used on the early Gear Drives contact me about a used replacement.

OEM Version of 14845 This part is obsolete as an OEM item but we have them available as a replacement part. This item replaces Gilson part number 14845 which became LawnBoy/Toro number 700283. New mounting hardware is included.

Replacement Version of 14845

14845 as installed

In Stock for Immediate Shipment
$33.50 or 2 for $62.00
Plus Shipping to US and international destinations

Quantity

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Friction Wheel
The friction wheel used in all known Gilson friction drive transmissions is most commonly listed as Gilson # 32222 and can be ordered online as an aftermarket item. It can also be ordered through your local LawnBoy dealer as LawnBoy/Toro # 741316 for about 3 times the price. The same parts is also known by Gilson numbers 18915 and 14806.
This same wheel is common to a number of other brands. The OD (new) is 6 inches and the steel core has an OD of 5- 1/2 inches. That means there is 1/4 inch of rubber when the wheel is new.

UniTrol Axle Bearing
Sold by the Gilson Snowblower Shop Kit

These are the axle bushings used on the 3 and 4 speed UniTrol machines. The OD is oblong to prevent spinning in the housing and the ID accommodates the 3/4" axle. The original part was of sintered (pressed metal) construction and is not practical for small scale manufacturing. We have created a direct replacement with a CNC machined high strength aluminum shell and a synthetic liner chosen for the application. The shell is anodized to stand up to the environment. They may be used individually or in pairs. These are direct replacements requiring no modification. Save $5. when you buy a pair and the pair ships as 1 item for further savings. Be sure to use the pull down menu above the "Add to Cart" button to get the pair price.
In addition to outright breakage this part eventually wears upward allowing the axle to come in contact with the friction wheel. This will cause the friction wheel to wear prematurely and can also make the transmission lock up. If you have been making do with worn parts this is your chance to get your unit in tip top shape for more decades of enjoyment.
OEM Version of 14725 Replacement Version of 14725
This part is obsolete as an OEM item but we have them available as a reproduction part. This item replaces Gilson part number 14725 which became LawnBoy/Toro number 703613.

Replacement Version of 14725 Installed In Stock for Immediate Shipment
$35.00 or 2 for $65.00
Plus Shipping to US and international destinations

Quantity

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UniTrol Axle
Sold by the Gilson Snowblower Shop Kit

This is the axle used on all UniTrol models that have two holes at each end. The original Gilson part is # 18729 which became LawnBoy/Toro number # 741284. Most commonly this axle is sacrificed to dismantle a unit when the wheels can't be removed.. Occasionally I will hear of an axle that has been bent or broken in servere use or abuse, like pushing a car.
This part was discontinued as a new item many years age but I do have good used axles available for sale. In order to create a pool of gears to provide for future replacements I am requiring a "core charge" on the old gear. If your need is immediate you may pay a core charge for immediate shipment. If you have time you can order an axle and I will ship the axle when I recieve your old gear.
If you need a # 14742 axle for one of the earliest UniTrols that have the wheels pinned on the inboard side please contact me directly about that part.

UniTrol Axle 18729 The axle shaft and final reduction gear are a welded assembly.

When returing your gear you only need to cut the shaft short enough to fit in your package. Please do not grind the weld. For the fastest turn around a USPS Priority Mail Flat rate box delivers in 2-3 days for a reasonable fee. If time is not critical standard parcel services are fine. The package should ship as 5-6 pounds.
Be sure to pack the gear so it is protected in the package. Gears must return suitable for re-use.
When refunding core charges I will issue a PayPal refund for the amount paid. You will see a slight PayPal fee applied to your credit.

For Immediate Shipment
(Includes $30. refundable core charge)
$103.50
Plus Shipping to US and international destinations

For shipment after reciept of your core gear
Shipping info will be provided in order confirmation.
$73.50
Plus Shipping to US and international destinations

Shipping Note: In order to maintain my low shipping price structure I have had to include some of the shipping cost in the selling price of these uncommonly large items. You will be pleasantly surprised when you see how little is added for shipping at check-out. Local buyers (southern Maine) can contact me for local pick-up pricing.

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Roller Chain
Sold by the Gilson Snowblower Shop Kit

Below you will find a table of the common roller chains used in Gilson built snowblowers. These are pitches and lengths from the Gilson illustrated parts lists.. The machine and function information is for reference only. Be sure to count your links or determine your correct part number when ordering. There may be exceptions to the reference descriptions. When in doubt contact me before ordering. Note that one part number, 207644 appears twice. If you need that number please write to me so I can match your chain to your model number.
All chains come with a master link and per Gilson protocol are included in the stated length. All pitch lengths are 1/2 inch but #40 and #41 are different widths. The rollers in #41 are 1/4" wide. #40 has 5/16 wide rollers. If you try to determine your chain length by measuring the chain be careful. On the longer chains there can be enough stretch to throw the link count off.
On machines with more than one chain I suggest replacing all chains at once. The chain drive forms a triangle and with different stretch factors it will be difficult or impossible to get the tension good for all.
If you need a #40 or #41 chain not listed here Write for pricing. be sure to include the number of pitches, including the master link and the pitch. I only handle #40 and #41.

Gilson # LawnBoy # Family/Series
Reference only
Count links and refer to parts list Function Pitch Number of Pitches
Incl. Master Price

13109 742099 Early Gear Drive - 1 speed Transmission to Jackshaft #41 32 $8.50

10492 742031 Early Gear Drive - 1 speed Jackshaft to Axle #41 54 $11.50

10490 742029 Early Gear Drive - 2 speed "Transmission to Jackshaft Low Speed (Left) #41 38 $9.25

10491 742030 Early Gear Drive - 2 speed "Transmission to Jackshaft High Speed (Right) #41 38 $9.25

10492 742031 Early Gear Drive - 2 speed Jackshaft to Axle #41 54 $11.50

24301 705448 3 speed Gear Drive (Early) Transmission to Jackshaft #41 30 $8.25

24302 N/A 3 speed Gear Drive (Early) Jackshaft to Axle #41 55 $11.75

24301 705448 3 speed Gear Drive (Mid) Transmission to Jackshaft #41 30 $8.25

27965 742316 3 speed Gear Drive (Mid) Jackshaft to Axle #41 46 $10.50

207643 705448 3 speed Gear Drive (Late) Transmission to Jackshaft #41 30 $8.25

207644 705449 3 speed Gear Drive (Late) Jackshaft to Axle #41 49 $10.75 Write for details

209368 N/A 8 HP Late Model friction Drive Friction Wheel to Jackshaft #41 34 $8.75

211397 705307 Smaller Late Model Friction Drive Friction Wheel to Axle #41 36 $9.00

209367 705308 8 HP Late Model friction Drive Jackshaft to Axle #40 38 $9.25

207644 705449 10-32 Gear Drive Jackshaft to Axle #40 49 $10.75 Write for details

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Snow Cannon Parts

SNOW CANNON

DRIVE BELT
Replaces Gilson # 207159, LawnBoy # 700370. Order a spare while you are at it.

FLIGHTS & PADDLES Includes 2 paddles and 4 flights to replace all of the rubber wear elements on your rotor. Flights replace Gilson # 207141, LawnBoy # 700504. Paddles replace Gilson # 207527, LawnBoy # 700371. Hardware is not included.

SCRAPER BAR Replaces Gilson # 201879, LawnBoy # 700321

Engine Oil 32:1 2 cycle engine oil to mix with your Snow Cannon gasoline.

Worm gear - Grease Packed Gear Cases

Mid range Gilson and Gilson built snowblowers utilized several versions of a grease packed worm drive to drive the augers. The photos below illustrate the 2 versions of these cases. In all but the latest model Gilsons these are found only on the single speed friction drive machines. In each version the common failure part is the sacrificial bronze worm wheel. In addition to being sacrificial bronze has desirable wear and cooling properties, especially in the original roto-tiller application. It is Gilson #18116 "Worm Gear", cross referenced to LawnBoy/Toro #700130. You can order it here.
One contributor to failures is grease aging. Over time the oil content of grease will separate from the viscous material leaving it with the consistency of dried soap. The oil slowly weeps out through the gaskets and parting lines of the case. Remember that the newest of these units is now 2 decades old and some are over 35. Repack the gear case with 1/2 pint of NLGI Grade 2 Lithium Base EP Grease. The case is hand packed during rebuild. Repacking any of these vintage gear cases prior to failure is a worthwhile project at this point.
Larger Worm Wheels (NOT Pictured)
The big 21 tooth worm wheel with a 1 inch bore used in the larger machines with oil bath worm drives is Gilson # 10398 which became LawnBoy/Toro # 700421. This part has been obsolete for some time. If tou are in need of one you may contact me regarding the availability of a used gear. To my knowledge this gear is opposite hand to all tiller applications.
A worn worm gear

WORN

NEW

Steel stamping gearcase Die cast gear case

Early model cases used 2 steel stampings and bushing inserts to provide shaft support and guidance. As primitive as these seemed compared to the die-cast version they held up better. After a number of years the die cast case design was retired and late model intermediate Gilsons into the late 1980s utilized this circa 1971 design. These cases are bolted together and are easy to service. Late mode versions included a grease fitting down in the front. Use the fitting and give the gears some grease annually, 5-10 shots. This will insure against the gears creating a dry cavity in the grease and going without lubrication. Mid year machines featured a new and improved die cast gear case that for some reason possibly attributable to internal play had poor gear life. These cases are riveted together at the factory. For servicing the rivets can be drilled out. Reassembly can be done with bolts and lock-nuts. The inset image shows a case bolted back together. Maximum endplay for the input shaft is .060 inches. Add internal spacer washers to reduce this if needed. A Phillips head plug on the side of the gearcase allows the addition of a grease fitting. Add the fitting and give the gears some grease annually, 5-10 shots. This will insure against the gears creating a dry cavity in the grease and going without lubrication.