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Old 05-04-2013, 12:16 AM
S. Scapes S. Scapes is offline
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Walk Behind Mower Transmission

So I have a 36'' Bobcat belt-drive walk behind. The tranny just doesn't have the strength anymore. I have to keep it in 1st gear on little hills now and find myself pushing the mower on long hills to keep it rolling. All gears still work so I was just wondering if it needs a service or is the tranny going out? These trannies run at about $200 but its worth the replacement since I use this mower alot and love it. Maybe it's low on fluid? I know it's not just slipping because I have the belts tightened right. Any posts will be great
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Old 05-04-2013, 12:18 AM
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Valk Valk is offline
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ALL new belts properly tensioned is a great place to start...especially the drive belt from the engine.
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Old 05-04-2013, 05:55 AM
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Richard Martin Richard Martin is offline
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It's a belt problem. Like Valk said, replace the belts and make sure they're adjusted properly. There is a belt under the mower that goes from the engine to the transmission. Did you check that one too?

There's nothing in the transmission to really slip. You have a shifter, shifter keys, some gears and a chain. More often than not, the shifter keys become damaged. You'll know it because the tranny will either not move at all when in gear or it will pop in and out of gear. You'd feel it. The transmission is full of Bentonite grease. It is kinda runny but it's extremely unlikely that it would loose enough grease to make a difference.
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Old 05-04-2013, 07:26 AM
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jsslawncare jsslawncare is offline
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I say belt's too.
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Old 05-04-2013, 10:25 AM
S. Scapes S. Scapes is offline
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Yea I'll admit, I didn't think about the belt connecting the engine to the tranny . I'll look at it today and see if I can get a new one
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Old 05-05-2013, 07:45 PM
S. Scapes S. Scapes is offline
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So it was indeed just the drive belt which is a big relief. Now I have it adjusted and runs great. However, if the drivebelt is too tight, will/can it melt or be damaged?
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Old 05-05-2013, 08:17 PM
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Richard Martin Richard Martin is offline
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Quote:
Originally Posted by S. Scapes View Post
So it was indeed just the drive belt which is a big relief. Now I have it adjusted and runs great. However, if the drivebelt is too tight, will/can it melt or be damaged?
I don't think you can get it tight enough to damage it. There should be about 1/2" of give in the belt when you push in the middle pretty good. You may damage the input shaft bearing if the belt is excessively tight.
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