Originally Posted by portabletelly
Ok So I ran out of time trying to fix this myself and dropped it off at a reputable mower mechanic. He swapped out with a v pulley and the mower now idels fine without the belt flipping. However after 10minuets of mowing the belt flipped onto its side. The belt was about 45 min old. Thinking that there might be some memory in the belt the mechanic then put in a brand new belt, however the same thing after 10 minutes of mowing the belt flips on its side.

The pully under seat has been changed to a V pully (this made some difference)
The left drive pully got changed to a new one
Has a brand new v belt.

What else can be causing this and where to look?

Hi portabletelly,

What is the part number that they are using for the 'V'' pulley as is does not seem to be sitting correctly and appear to be running on the inside of the pulley.

Also brand and part number of the belt used.

Can you take a picture of the inside of the pulley so we can see if it is touching it?

Regards,
[Linked Image]

Bruce


Please do not PM me asking for support. Post on the forums as it helps all members not just the individual.