Auger belt is too loose - Snowblower Forum : Snow Blower Forums
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post #1 of 36 Old 02-01-2018, 02:25 PM Thread Starter
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Auger belt is too loose

I have a yard king signature 9hp/29inch. It was manufactured by Murray. When I put a brand new belt on it (38 inch), it is too loose, even with the tensioner pulley adjusted all the way in. I have tried using a 37 inch belt, but then the auger turns all the time (belt is too short). I have been able to find a 37.75" belt (NAPA), but that is too long, too, and I have to adjust the tensioner all the way in. Anyone know where I can get a 37.5 or 37.25 belt? Or maybe change the tensioner pulley to a larger diameter? Or change the tensioner pulley to a smaller diameter & use a smaller belt?
Any help would be appreciated. Thank you.
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post #2 of 36 Old 02-01-2018, 03:19 PM
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Make sure it's routed correctly, sometimes there's things you have to go under, around, that aren't obvious. And don't use a typical car belt, it will shred.
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post #3 of 36 Old 02-01-2018, 04:14 PM
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What is the model # of the machine and what is the part number of the belt Yard King recommends for a replacement ??

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post #4 of 36 Old 02-01-2018, 04:19 PM
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Go to DDPowerDrive-Belts.com to find the right length and then cross reference their number, go to eBay or Amazon to order the right belt.

Make sure the belt you have now is 4L 1/2" wide, if not, that is your problem. Auger belts use 4L.

1986 Ariens ST522, 5hp, 22"
1995 Murray Craftsman 10hp, 29" w. 12" impeller
A 1983 Real John Deere 10hp, 32" w. 12" impeller, 16" auger, 20" high front, cast iron gear box, chains
Noma 9hp, 27" w. 12" impeller
Noma 5hp, 24" w. 12" impeller, 20" high front
Gravely Convertible, 12hp Kohler cast iron, 26" width, 600 lbs of cast iron & steel, 2 speed impeller, 4 ground speeds
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post #5 of 36 Old 02-01-2018, 04:29 PM
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post #6 of 36 Old 02-01-2018, 04:30 PM Thread Starter
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Quote:
Originally Posted by Kiss4aFrog View Post
What is the model # of the machine and what is the part number of the belt Yard King recommends for a replacement ??
model # 629904x81a
Serial # 746723500DJ00139
I've used Murray belt # 585416
Stens belt # 265-524
Dayco belt # L438 (aka 13RL965)
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post #7 of 36 Old 02-01-2018, 04:32 PM Thread Starter
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They're all too loose when new. Once they wear a little, or the snow gets heavy, they start to slip & wear more. Then performance Suffers.
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post #8 of 36 Old 02-01-2018, 04:36 PM Thread Starter
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Originally Posted by jtclays View Post
You can't get too far wrong from adjusting a 37.? to 38" without something wrong in the routing. Usually it's wrapped around the brake nub. Belt should always be routed directly from the sheave (engine) to the pulley on the back of the bucket. Everything else goes OUTSIDE of the belt. Check your bolts from the tractor to the auger and look for cracks in the welds.
I've got it threaded up right. Changed it out plenty of times. Same every time. Why do you say to check for cracks in the welds? How would that affect my belt?
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post #9 of 36 Old 02-01-2018, 04:47 PM
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if ur i/2" off theres something else thats wrong or user error.
its either 37 or 38, is this o.d. or i.n. diameter, my auger belt could not use a 39 but did for 40" o.d. belt which i thought the adjuster pulley could compensate for the 1" diff, maybe it could of if i used more brute force on it but then it would probably always be turning.

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Last edited by vinnycom; 02-01-2018 at 04:52 PM.
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post #10 of 36 Old 02-01-2018, 05:05 PM
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To me, to get the correct tension, and to have the correct tension for future adjustments, 1/2" difference in belts is huge.

As jsup mentioned, make sure you have the belt routed correctly especially around the correct side of the idler pulley.

Are you assuming you have a 37" & 38" belt because the package said so? Measure it!!! Measure both belts. I measure all my old belts, even some new, but never Pix or D&D Power Drive belts as they always measure correctly. I have found too many times, to much discrepancy between stated and actual belt sizes.

1986 Ariens ST522, 5hp, 22"
1995 Murray Craftsman 10hp, 29" w. 12" impeller
A 1983 Real John Deere 10hp, 32" w. 12" impeller, 16" auger, 20" high front, cast iron gear box, chains
Noma 9hp, 27" w. 12" impeller
Noma 5hp, 24" w. 12" impeller, 20" high front
Gravely Convertible, 12hp Kohler cast iron, 26" width, 600 lbs of cast iron & steel, 2 speed impeller, 4 ground speeds
Dynamark 8hp, 26", 12" impeller, for sale
Several other 5hp, 8hp, several 2 cycle, all for sale
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