Hi guys,i got stuck into the self propelled victa,replaced the head gasket-replaced drive belt,cant find a proper fuel tank so i improvised with a victa power tourqe type anyway the mower starts first time and runs really well,mowed half the back yard using the drive then the belt comes off the diff pully and jams under it.did this 3 times-do i need to make a small guid out of half a chain link to keep the belt in place.do to the age of the mower and slight wear on drive parts this is all i can think of...ken
To keep a V belt in place you need the pulleys to be exactly in line with each other - so if you lay a ruler across one it will lay exactly across the other as well, touching the full width of both. The belt needs to be undamaged (no kinks, notches, missing bits etc.) and tight. If you can meet that standard and it still comes off, I'd like to see a picture of the drive.
If you can't meet that standard and want to try to keep it on anyway, you might succeed with special pulleys that are higher than normal on the sides, and belled on the outermost part. Alternatively a jockey pulley on the slack side helps (they usually jump due to a bight on the slack side).
Having never had a self propelled quite like yours, is there any adjustment on the belt tensioners? I would be thikning when you back off the drive it is going a little too loose causing the belt to jump.
A worn/stretched belt can be prone to jumping and slipping as well, they are only about $12 at the local belt place here, just take the old one with you and they can measure it up.
Grumpy,thanks and whats a bight-joe,put on a brand new belt of the victa spec m-45.when you push the mower back and forward by hand the rear pulley/diff ass rocks up and down about 2mm.i am thinking that is enough to make the belt jump,i am not sure if from new it was ment to rock or just from wear.i can drill a hole in the deck to hold a 4mm bolt right next to the belt at the start of the rear pulley and weld a chain link cut in half to act as a fixed guide just before the belt enters the rear pulley if you get my drift,good imagination.in the photos you can see the rear pulley/diff...ken
ken, a bight is a sagging section of a loose rope or belt - hence the "Great Australian Bight" on the south coast is the shape of an upside-down sagging rope. Slack belts flop about and fall off their pulleys.
When your pulley moves up and down, is it moving axially, or is it rocking? Also, if it is rocking, is it because the pulley shaft is loose in its bearings, or because the whole housing is loose on its mountings? The causes of the these three conditions would be different.
Hi guys,once again-dont forget your BOLTS,the diff housing was missing a bolt which holds it in place(stops it from rocking)found a spare one and put it in with lock-tight under the chassis.whent for a mow and no probs.thank you all for your in-put,i feel silly not realising it sooner...ken
