1998 Yard Machines throwing distance - Snowblower Forum : Snow Blower Forums
 
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post #1 of 9 Old 08-28-2015, 08:46 AM Thread Starter
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1998 Yard Machines throwing distance

I have a 24" Yard Machines with 5hp Tecumseh engine from 1998. While it has certainly served me well over the years (I am the 2nd owner. It came with the house) and starts on the 1st or 2nd pull I am wondering if it is just done. At the beginning of last winter it was fine and the was easily throwing the snow across the driveway and onto the grass. I live in Massachusetts and we had, for the region, a very snowy winter. By the time the last storm came through it was only throwing the snow about 3/4 of the way across the driveway. The driveway is 2 cars wide. The belts seem tight and they are not squealing. Is there anything else I should check or is it just old and tired?

Thanks,
Ryan
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post #2 of 9 Old 08-28-2015, 09:22 AM
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try an impeller kit, make sure the engine revs up all the way
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post #3 of 9 Old 08-28-2015, 09:25 AM
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I know you said the belt is tight, but I would check it for wear. I also live in MA and I replaced quite a few auger belts for family and friends forwards the end of last winter for the same reasons. You could also check your impeller bearing as it could be worn as well being that it is probably the original going on it's 17th year.
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post #4 of 9 Old 08-28-2015, 10:56 AM
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Werlcome to the SBF RyanC,

For the throwing distance to diminished, as others said, check your belt tension and belt condition, as it may be worn and slipping.
Make sure that the engine is is good condition and reaching the proper high RPMs needed to throw snow far.
Install an impeller kit and see what difference it makes (this is also gonna help you with slush).
Also, was the last snow wet versus dry snow on previous uses, because that will make a difference in throwing distance.
Just some thoughts.
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post #5 of 9 Old 08-28-2015, 10:59 AM
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Those Tec 5hp are known for the exhaust valve stem growing as they age causing lack of power and then lack of compression and hard to no starts. Did it seem to "get tired" the longer you ran it? Like it threw snow well first pass and then less and less. Kind of an involved repair, but can be done easily at home for cheap. Hard to swap that engine as they are usually dual shaft. Definitely recheck your belts and look for play in the auger pulley like mentioned before, cheap first, then move on to the bigger stuff. Also check around the seam of the head to cylinder. Are you noticing any black marking on the shrouds anywhere. Could be a failing head gasket. For shoots and giggles check the head bolts for tightness.
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post #6 of 9 Old 08-28-2015, 12:03 PM
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the same think happened to my hm80, i just threw it on craigslist and bought a new engine with the money i made from it
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post #7 of 9 Old 08-28-2015, 10:13 PM
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From my experience with the 5hp Tec, I would check the clearance gap on the exhaust valve.
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post #8 of 9 Old 08-29-2015, 10:47 AM
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Garage
You would need some kind of tachometer to find out about the engine. You don't want to just crank up the RPM as that's the best way to have the rod blast out the side of the engine. It's nice to have one of the tach/hour meters they sell on ebay to both monitor the engines speed which max is usually around 3600/3900 rpm but you want to find out exactly for your engine. And the hours are nice to know for oil changes and maintenance. For 10-30 bucks it's a nice tool to have and can easily be transferred from machine to machine.

Found this one for under $10 on ebay searching: "Digital engine tachometer hour meter inductive"


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Make sure the windows are up before the snow plow goes by !!

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post #9 of 9 Old 08-29-2015, 10:53 PM
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I bought a 1978 with 8 hp Tecumseh that seemed sick. It was hard to start and only ran when it was partly choked and would not rev up. After I cleaned the carburetor and readjusted the jets it ran and rev'd way up.

Last edited by AL-; 08-29-2015 at 11:15 PM.
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