Troy Bilt walk behind - Transmission question

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  #1  
Old 03-08-18, 10:36 AM
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Troy Bilt walk behind - Transmission question

Folks I have a 16 yr old TB that has given sterling service. Regarding the transmission, from the operators view. The right side wheel turns constantly when drive is engaged. What is the left hand wheel supposed to be doing? Is that a freewheel or is it also supposed to be turning. If I hold the mower up and engage the drive, the mower seems to sometimes spin the left hand wheel and other times it is stationary. What are the rules fro the left hand wheel to spin? I'm just wondering whether I'm getting older and slower or the mower is getting older and slower. It has a new drive belt. I looked at the wheels and gears and they look ok.

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Old 03-08-18, 11:14 AM
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Without a model number it is hard to know what system you have....you said right wheel....front or rear? Too many types of drives to know for sure.
 
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Old 03-09-18, 11:32 AM
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Sorry, that would help if I supplied that info. It is a model 466 21inch cut. The drive is front wheel. So looking from the rear, operator, position...the right wheel constantly turns when drive is engaged, whilst the left wheel sometimes spins and sometimes is static.

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  #4  
Old 03-09-18, 12:13 PM
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The drive teeth in the wheel are probably worn out. I replaced both of my front wheels when I had the symptoms you mentioned and it solved the problem. Good luck with your project.

https://www.toolpartsdirect.com/troy...model-466.html

Another possibility is a loose drive cable. There should be an adjusting knob(wheel) where the squeeze handle connects to the cable.
 
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Old 03-13-18, 12:33 PM
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Interesting. I was expecting to find plastic teeth on the wheels as that's what I'd seen on you tube albeit for a different mower. But the teeth on on these wheels are metal and all seem to be ok. There is no chipping or visible wear....unless they have all worn by the same amount. I could just get the left hand wheel as that is the one that spins intermittently. So are you saying that on your mower, both wheels constantly turn when the drive is engaged? I may even be able to swap the wheels over and see if the problem moves.

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  #6  
Old 03-13-18, 02:59 PM
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Inspect the drive gear on the left front. Does it spin freely on the drive shaft? If so, look for a missing pin that secures the drive gear to the drive shaft.
 
  #7  
Old 04-07-18, 06:46 PM
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OK, I have two wheel drive again!. I swapped the wheels over so the transmission drive gears would be driving on the unused face of the wheel teeth. All good. If you pull the transmission gears and manage to get them mixed up.....the gear stamped' L' is left looking from the operators position. I must say the mower has been a great piece of kit, it is 16 years old, starts first pull and owes me nothing. Hopefully their current models are just as reliable...hopefully they haven't gone the way of other western products.
 
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