This is a Genuine OEM Toro Pinion Gear, with 15 teeth, which drives the gear on the wheel. This part is sold individually. There are two of these gears used on the Mowers for the left and right sides. If the gear is showing signs of damage or wear it needs to be replaced.
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★★★★★
★★★★★
Easy to do, need instructions regarding right and left side
Mowers is working like new, no noise.
Guest - June 4, 2019
Verified Purchase
★★★★★
★★★★★
Parts
I’m so glad when I can walk into a store for some big or small parts. And. They have what I need and don’t have to order them and wait a week or so. Thank Ereplacement
Randy - August 8, 2019
Verified Purchase
★★★★★
★★★★★
Self propelled mower parts
Parts were in great condition and worked well
Guest - August 13, 2024
Verified Purchase
★★★★★
★★★★★
parts
seem to have every part I need at a great price
Guest - September 24, 2019
Verified Purchase
★★★★★
★★★★★
worked as expected
perfect fit
Daniel - April 20, 2020
Verified Purchase
★★★★★
★★★★★
Pinion gear was exact fit and easy to change
Pinio
Guest - May 21, 2020
Verified Purchase
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Symptoms: Mower has to be pushed, power not engaging, makes a loud ratcheting sound.
Use 13mm socket to remove wheel. Determine it the gear on the mower is worn. Check both wheels to determine if you need to replace the gear on both sides! If you don\'t you\'ll end up ordering twice and paying for shipping twice. Also the sam
... Read moree gear works on both sides and is marked with an R and L so you will know how to put it on.
Remove c clamp with screwdriver and pliers. Don\'t bend it. Just press down on the clamp until you can get a grip on it with the pliers and then pull it off.
Remove the washer
Remove the worn out gear. Don\'t let the little free moving metal tab that engages the gear slip out of its slot or the wheel will not engage when you finish.
Put the new gear on. It has an R on one side and an L on the other. The R goes on the right side as you stand behind the mower, L on the left side.
Reverse the process for the washer and c clamp.
Replace the wheel.
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Self propelled was not working due to worn down pinion gears.
1. Disconnected spark plug. Removed grass bag. Raised mower up on wooden 2x4s to access back wheels (did not tilt mower).
2. Removed left wheel with a socket set.
3. Removed ring clip with screw driver and needle nose pliers.
4. Removed pinion gear and thrust washer while holding down key on shaft. Quickly examined condi
... Read moretion of key and didn\'t replace.
5. Replaced with new pinion gear, new thrust washer and new ring clip. Slid pinion gear on with L on outside (facing direction you would be standing to use mower), thrust washer and put on gloves to push ring clip onto shaft. The pinion gears have L and R engraved on them and are interchangeable.
6. Replaced old wheel with new wheel. Gears on old wheel were worn too. Used socket set to reinstall wheel.
7. Repeated for the right side.
8. Tested and self propelled worked. Although the left wheel would not move when I backed up. I had the tension too tight on the self propelled cable. Loosen nut near handle and eased back on the tension in the cable. Mower backs up and self propelled works like new. Mower is about 12-14 years old and is a Toro Personal Pace.
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Lawn boy mower rear drive: harsh engagement of rear drive wheels in self propelled mode
Removed rear wheel bolt, removed E-clip retainer from axle removed stripped gear and replaced same. Gears will fit either right or left side of axle by just spinning then around 180 degrees. Face of each gear is marked either left or right. Make sure small axle woodruff key isn\'t broken or missing as it retains gear on axle shaft. Instal
... Read moreled gear on axle shaft washer and E-clip. When installing E-clip\'s Make sure E-clip lines up with machined slot in axle as then it is fully seated to retain the drive gear assembly! Lubed axle gear on shaft and gear riveted to new wheel with 30 weight oil. Reinstalled new wheels with blue Loctite on wheel retaining bolt to bracket. And Done, works great, and no more hash engagement in self propelled mode. Parts are O.E.M. quality and fit was perfect. ereplacementparts.com ROCKS!
1. Removed right side drive wheel and exposed damaged pinion gear.
2. Key and spring were damaged also.
3. Cleaned key way and spring retaining hole and installed new parts.
4. Installed new pinion gear with thrust washers and spring clips.
5. Installed existing wheel, started mower
When we investigated the reason for the self-propel not working, we found numerous parts missing and the gear off the shaft. Replaced parts and reassembled and thankfully it is working like a charm. Just followed the parts diagram. And take your time.
First I removed the shoulder bolt with the impact wrench. Then removed the wheel. Removed the clip ring, then the thrust washer. I then removed the pinion gear just by pulling it off. Replace the old thrust washer, clip ring, and thrust washer. To assemble just reverse the order of the tear down.
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Grinding noise in left wheel, loss of self propel function
Removed back wheels, gears and axel.
Removed mower blade and belt.
Rebuilt transmission and repackaged with grease.
Reassembled and found an extra spacer. Eventually found it went in between the main engine shaft and the blade\'s shaft-bracket. If you leave this off then the engine won\'t turn due to clamping friction
... Read more of the bracket against the engine\'s bottom.
After reassembling with all new parts and testing, the left wheel gears still sounded bad (grinding). Read different website forums from 2010-now where some people fixed this design/tolerance issue by adding spacers between the left wheel mount and the mower body. I added those and the grinding went away.
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I\'m not sure exactly what happened. My wife called me and said that the tire exploded. The plastic hub had twisted up like a straw.
I set the lawn mower up on blocks. Installed the spring, set the shafts key over the spring, slid the gear over top. Put the washer in place, used needle nose pliers to lock in the snap ring, put the tire on and used a 1/2\" socket to tighten up the tire. Very easy.
Removed drive wheels then removed retaining clips from drive axle. Removed drive gear ,key & spring. Be sure to pay attention to the direction of the pinion gear when you reinstall it. if you install it in the wrong direction it won,t drive the wheel when it is put into drive mode. Grease all parts and reinstall in reverse of disassembly
... Read moreand you are ready to go. Easy repair just pay close attention to disassembly and you are good to go.
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Wheel mount brackets mis-aligned causing gears to mis-align and slip.
1. Removed drive wheels and wheel covers.
2. Remove snap rings and pinion gears.
3. Removed and cleaned woodruff keys and springs.
4. Cleaned axle and keyway.
5. Used file to remove burrs on axle shaft keyway.
6. Used pry bar to straighten wheel mount brackets.
7. Cleaned, lubricated and reinstalled key
... Read mores and springs.
8. Installed new pinion gears, washers and snap rings.
9. Lubricated gears and installed wheel and cover assembly.
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Model Cross Reference
This part works with the following models:
ERP Number: ERP8827364
Manufacturer Part Number: 105-3040
This part is in stock in our warehouse and will ship out within 1 business day of the order being placed.
New stock is on the way! On order parts usually ship within 7 business days.
Item is not in stock and usually ships 10-15 business days from the time you place your order.
This item is no longer being made by the manufacturer, and cannot be added to your shopping cart.
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Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.
(2006)_WW_8.gif "Part Location Diagram of 105-3040 Toro Pinion Gear")
(2006)_WW_8.gif "Part Location Diagram of 105-3040 Toro Pinion Gear")
