Transmission drive belt

[Yitzchok 2]

 

Hi, I have a Wheel horse 312-8 and if i press the clutch too fast or i am on bumpy ground sometimes the belt flips into the space next to it and then the clutch does nothing when i push it and the tractor starts lurching, am i missing a guard there?

[ebinmaine 78,498]

What's the age and part number of your belt?

It looks thin.   

[953 nut 65,593]

There is a belt guide attached to the right foot rest, is it in place?

[gwest_ca-(File Mod) 12,183]

Adjust these guides so they just clear the belt when the belt is tight.

They will force a good condition belt to behave.

[Bill D 2,793]

That looks like a 1/2" wide belt.  Should be an 82" x 5/8".  Also, the belt on the PTO should be on the larger pulley closer to the engine. 

Edited April 28 by Bill D

[ri702bill 11,987]

7 hours ago, Bill D said:

That looks like a 1/2" wide belt.  Should be an 82" x 5/8".  Also, the belt on the PTO should be on the larger pulley closer to the engine. 

On both counts. And any belt that far down in the V groove acts like it is too long, causing shifting issues. The top of a new belt should ride just above the OD of the pulley.....

[peter lena 9,859]

@Yitzchok in  addition to the belt , would also  ensure  / verify  lubrication to any / all related  movement areas ? regularly see , hear  linkages trying to move in rust , regular related is belt bouncing  , and sudden release , causes erratic  response , one of my base line , repetitive  eliminations . put that in the same class as , rusted  choke / throttle cables , simple / easy  , maybe a spring assist ?  pete      

[Yitzchok 2]

On 4/27/2026 at 7:36 PM, ebinmaine said:

What's the age and part number of your belt?

It looks thin.   

I don't know, a few years ago (before i started using it) i think the old one snapped and my older brother switched it.

[Yitzchok 2]

23 hours ago, gwest_ca said:

Adjust these guides so they just clear the belt when the belt is tight.

They will force a good condition belt to behave.

Thanks i adjusted them and it seems to work fine

[Yitzchok 2]

22 hours ago, Bill D said:

That looks like a 1/2" wide belt.  Should be an 82" x 5/8".  Also, the belt on the PTO should be on the larger pulley closer to the engine. 

Thanks i switched it, what is the other one for?

Edited April 29 by Yitzchok

[ineedanother 2,175]

1 hour ago, Yitzchok said:

Thanks i switched it, what is the other one for?

Not sure how many attachments might use that one but the hydro pump for the ARK FEL does.

[ebinmaine 78,498]

7 hours ago, Yitzchok said:

Thanks i switched it, what is the other one for?

 

6 hours ago, ineedanother said:

Not sure how many attachments might use that one but the hydro pump for the ARK FEL does.

 

 

My Mackissic chipper shredder is driven by the smaller outside groove too. 

[pfrederi 20,403]

Snow blowers use outer pulley

[Yitzchok 2]

I thought it was good but today it did it again! also i have to run it on choke unless i turn the main jet screw in and out than it runs off choke and i slowly have to pull the choke out more and more until i do it again what should i do?

Edited May 1 by Yitzchok

[lynnmor 8,780]

31 minutes ago, Yitzchok said:

I thought it was good but today it did it again! also i have to run it on choke unless i turn the main jet screw in and out than it runs off choke and i slowly have to pull the choke out more and more until i do it again what should i do?

Multiple photos of the entire belt system might help us see the problem.  Remove the carburetor and clean it out completely.  I wonder if you messed up the adjusting screws or the carburetor body with all of the adjusting.

[Yitzchok 2]

On 5/1/2026 at 8:12 PM, lynnmor said:

Remove the carburetor and clean it out completely.  I wonder if you messed up the adjusting screws or the carburetor body with all of the adjusting.

The screws were fine, cleaned it out and it works fine now.