OutdoorKing Repair Forum Forums Repairs and Maintenance Questions On Ride On Mowers Questions on Greenfield Ride On Mower Frames Greenfield Drive belt keeps twisting

So I bought a reasonable newish greenfield mower on Marketplace. Greenfield 27 hp 34 inch fast cut about 3 months ago 160 hrs on clock. About 4 to 5 hrs in drive belt slipped and burnt. I believe this was caused by a twist in the belt. Anyway so long story short I replaced the drive belt thinking it might have just been an worn belt and i got another 2 hrs of mowing before the same thing happened.

Anyway two more belts later I realised what was going on and at idell the belt does not twist then as soon as you give it high revs the belt immediately on the left hand side of the idler pully as it goes onto the left hand drive pulley it twist which then if let run creates drive issues. Tried a new idler pulley but same thing, its not that so Im thinking of replacing the left hand drive pulley.

As the machine was not new when I purchased can anyone confirm that this idler pulley is meant to be a v pulley or flat. I cant see any other adjustment there. So apart from the big job or replacing the left drive pulley does anyone else have any other ideas.

Hi portabletelly,

Do you have the model number of the greenfield ride on so we can check the parts list.

Hi portabelly, welcome here.
That pulley you are showing I assume is the pulley up under the seat where the drive belt changes the direction of the drive. Bit hard to see what pulley there but it should be a "V" pulley, flat idler pulleys run on the back side of the belt. I doubt this is the cause of your belt slipping and burning because the belts are designed to twist and flex in those short distances.

Norm, I don't think I explained it quite correctly. So what is happening is that the belt comes off the idler pully on the left hand side and it hits what they call I think the clutch pully. What is happening is that the belt will flip on its side on the left hand clutch pulley. So the belt will run on the side of the v over the left pulley instead of sitting in the belt in its v formation. When you put a brand new drive belt on and tension it up, you can start the mower and let it run at idel and the belt does not run on its side and runs normal. But as soon as you up the revs the belt will slip/flip back over onto its side on the left hand clutch pulley and continue in this manner all future rotations. unless you re tension and flip it back. It was doing my head in so I paid a very experienced mobile mower mechanic too look at it. He said he has never seen a greenfield do that before in 30 years. He didn't have time to change the clutch pulleys there and then but that was his suggestion for rectification.

Talking to an ex greenfield dealer he suggested I try and obtain an A134 Super 2 raw edge belt as a first shot before replacing the clutch pulley. However I did the ring around to about 10 belt places and no one could get one. So the project for the weekend is to replace the left hand clutch pulley and the idler pulley and hope and pray that fixes.

Bruce: in answer to your question its a 34 inch greenfield fast cut with the briggs and Stratton 27hp in it. I think its like 2017/2018 vintage.