Snowblower wheels will not engage intermittently


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Old 11-04-19, 03:14 PM
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Snowblower wheels will not engage intermittently

Hey guys, I have a Yard Machines 22" cut snowblower with a 5hp Tecumseh motor on it.

I have been having a problem with the wheels engaging intermittently, ususally towards the end of its shift (only about 1 hour of use at a time) One time it was wet out so I thought the friction wheel was getting wet but it seemed fine. I also tried cleaning it and the metal wheel it contacts and seemed to solve the problem until it happened again during the next use. Doesnt seem wet or greasy or anything. Visual inspeciton tells me the friction wheel is good but maybe I'm wrong. It seems to work fine for a little while and then will start this not engaging problem nearing the end of getting the driveway done. The intermittent part has me stumped because at the beginning of use I usually hold the grips and lean back, and let the tires spin on the driveway trying to get it the disc to slip and it won't do it. Any help would be greatly appreciated!
 
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Old 11-04-19, 03:31 PM
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When you squeeze the handle for drive does the handle bottom out just before you get movement ?
Most smaller snowblowers like that have an adjustment in the drive engage linkage to allow the friction drive to contact earlier. It's usually a threaded rod with several nuts you can move to shorten the linkage.
 
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Old 11-04-19, 03:45 PM
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Hey PjMax. I believe i get engagement well before it bottoms out completely.
 
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Old 11-04-19, 03:48 PM
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Then the disc is just slipping. Is the face worn smooth ?
 
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Old 11-04-19, 04:25 PM
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When you say face are we talking about the disc with the rubber outer ring or the plate that the rubber makes contact with when applying the lever?

Sorry for my poor terminology

The disc with the rubber outer ring looks good to the best of my knowledge

The plate is smooth and dry
 
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Old 11-05-19, 08:05 AM
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Is the wheel supposed to be smooth?

I just found several different people saying melting snow water from the motor gets onto the wheel and causes slippage. They end up siliconing everything to keep the water out. I wonder if this is my problem. I think i will replace the friction disc for peace of mind (still need to know if the wheel is supposed to be smooth or not) and silicone everything up and see where that gets me.
 
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Old 11-05-19, 02:24 PM
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Ok I am going to assume the wheel is supposed to be smooth. I think it has always been that way.
I have gone ahead and got a new friction disc rubber ring for peace of mind. I will compare the two when it arrives.
Also I think I'll just silicone everything as much as possible, or try to divert the water somehow to keep it out. If anyone has any insight to this please let me know!

Also for peace of mind I am going to check the valve clearance. There is a lot of discreapancy across the web so I can't get a definite answer on what the valve clearance is supposed to be. It is an HMSK 85 155905B
If anyone has this info please let me know! Thanks!!!

 
 

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