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Simplicity single stage snow thrower belt? issue..
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Posted by andrelaplume2 usa (My Page) on Tue, Feb 9, 10 at 8:56
| I have an older (12+ years I think) single stage simplicity snowthrower (551M - 1692320). I had a buddy service it a few years back but I rarely used it and it would not start this year. I bought the carb kit etc and it now starts and runs strong but under a wet load the auger stops...the engine is running fine though. I figured it was perhaps a belt adjustment. The manual says to measure the spring (I assume the one at then of the cable) and then pull back the bar and measure again. It should expand 7/16". If not adjust the cable. Well, I have my cable adjusted as far down as I can without the lower nut coming off....its not quite 7/16" though. It did throw better for 10 minutes, then I heard a squeal, then it stopped going thru heavier snow again. So now I figured its probably the belt or perhaps the pther spring towards the front. I went to the dealer and they had ONE belt left but saved for someone else! They did hold them together and they both looked the same length but perhaps mine had become more elastic with age...? While the belt was off I saw it said MTD and some number I can not make out. Why would an MTD belt be on a SImplicity thrower? I thought maybe my buddy changed it a couple years back with perhaps a non oem belt but he does not remember doing so...it should be the OEM belt. Anyway, what do you guys think...a bad belt, a bad spring...or its just 12+ years old and there is some sort of engine issue...? |
Follow-Up Postings:
RE: Simplicity single stage snow thrower belt? issue..
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| I would pull the cover and get a feel for the rotor bearing. If it seems secure (not allowing the shaft to pull up when belt tension is put on and that it turns freely) and the idler seems good then replace the belt |
RE: Simplicity single stage snow thrower belt? issue..
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| whoooooaaa. You seam to have mistaken me for someone who actually knows something! I am just a dude who was able to get to the carb, service and get the belt off. I am not up on terms and such. What is the rotor bearing? All I know is there is a cable with adjusting screw on the end near the engine. There is haeavy duty spring on that which appears to pull something down to engage the belt. There is a nother spring that appears to kepp the first thing from falling backward when not engaged. Not techie jargan I know.... |
RE: Simplicity single stage snow thrower belt? issue..
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| If I said auger that may have been more correct. With the belt cover off, grab a hold of the lower pulley and try to wiggle the bearing. Watch when you put tension on the belt if the pulley draws toward the engine. That would indicate a worn bearing. A touch of side to side movement is fine. |
RE: Simplicity single stage snow thrower belt? issue..
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| thanks...just read this...already put the belt on so we will see how it works...if not I'll try what you said but I think that repair is beyond me. I am hopefull...one the new belt was in place I had to readjust the screws to set the tension so the spring expands 7/16"....its almost back to its original position...hopefully my old belt was just stretched. |
RE: Simplicity single stage snow thrower belt? issue..
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| THE BELT WORKED!!!!!!!!!!!!!!!! |
RE: Simplicity single stage snow thrower belt? issue..
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