I have a MTD Yard Machines 14HP Riding Mower I bought in Fall of 2002. I believe it is a Model 660F, exact model is 134AM660F062. Last fall I replaced all 3 of the belts on it because when engaging the drive it was starting to slip quite a bit. At least one of the belts was in real bad condition. The book that came with it had some pretty good instructions, and after a weekend, I was able to replace all 3 belts and have everything back together. Everything works well right now, except for one thing. When I start up the mower, without engaging either the drive nor the blades, the engine pulley in the front will start to heat up fairly quickly. Last fall before I put it away, I drove it over to the storage shed and the pulley was so hot, that the new belt was starting to smoke a bit. I tried to loosen and re-tighten the engine pulley bolt on the bottom, thinking that it maybe too tight, but it is still heating up. The belts don't seem to be too tight and the pulley does turn. Any ideas? I thought I'd try this forum first, and then if I'm not having any luck, I'll be taking it to a shop. Thanks!
MTD Riding Mower Engine Pulley Gets real hot within a minute
- Thread starter jpregler
- Start date
Have seen a few where the engine pulley gets worn or for some ready the groove will get wider allowing the belt to bottom out in the pulley which causes belt slip and a lot of heat.
it doesnt appear the belt is bottoming out, seems to run on the same area as always. the front pulley doesnt have bearings, it slips onto the shaft aligned with the groove in the shaft. there is a spacer between the pulley and bottom of the engine but it is a solid piece not a bearing. any more suggestions? possibly a silly question but could their be bearings somewhere in the shaft or possibly a bent shaft that would cause friction creating the high temp. thanks for any help and suggestions you can offer
If you had a bent shaft I believe you would definitely feel a vibration with the engine running. Since there are no bearings then you have obviously ruled that out as a possibility. I agree with the belt riding too deeply in the pulley theory. To test that out, remove the belt from the engine pulley and let it run for a few minutes then shut it off and see if its hot. I would bet not. If its not, you either have a worn belt or most likely, the pulley is worn and allowing the belt to run too deeply in the groove and is getting hung up in the pulley even though it appears that it is not. Let us know what you find.
ill try it in the morning with the belt off, today when i was tinkering with it i let it idle and had the center piece off so i could view the belts from the top. i could see that the belts werent turning while it was in idle and the blades disengaged and it stilll got hot in a couple minutes
i dont know what i did to upset the mower gods but i apologize for whatever it was. spent all morning getting the old push mower up and running so the dog wouldnt get lost in the grass. so i did get around to running the rider with no belts on at all and same result. within 2-3 mins of just sitting there when shut it of the double pulley was extremely hot. since there is no bearings and the belts were off im afraid it just leaves the shaft. their isnt any vibration so im not sure if its bent or if it isnt bent what it is. ive already reached the peak of my knowledge on this subject days ago, lol. any other thoughts i have are just random guesses. hope someone can give me an idea of where to go from here other than the obvious, tie it to the back of the motorcycle and take it to a shop. thanks
Carscw
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When did this start with the pulley getting hot?
Was it when you changed the belt?
Did you change the belt ?
If you did change the belt what brand did you get and where did you get it?
(( racing is the only sport that you need two balls ))
Was it when you changed the belt?
Did you change the belt ?
If you did change the belt what brand did you get and where did you get it?
(( racing is the only sport that you need two balls ))
Carscw
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- Aug 11, 2011
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Sorry I need to read everything before I run my mouth.
If you did not put a MTD belt on then there is your problem.
Or the belt is a half inch to short or you got a 5/8 belt and not a 1/2 belt.
Did you look at the number on the belt or just on the cardboard
(( racing is the only sport that you need two balls ))
If you did not put a MTD belt on then there is your problem.
Or the belt is a half inch to short or you got a 5/8 belt and not a 1/2 belt.
Did you look at the number on the belt or just on the cardboard
(( racing is the only sport that you need two balls ))