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How to stop belt from slipping
Jeremy Holmes , Check/verify that you have the correct size belt installed and if worn/stretched replace it, then make sure all the belt keepers/retainer guards/guides/pins are in place and not bent away from pulleys too far(allowing belt to jump off)1/8" gap is good.Ensure belt routing is correct,check for worn bent pulley’s or excess debri around them, level the deck. Link and pic. below may help Good luck. I hope this helped you out, if so let me know by pressing the helpful button. http://homeguides.sfgate.com/causes-belt… http://www.ereplacementparts.com/craftsm…
Check your pulleys for wobble and make sure your belt is the right belt. if that don’t work for you use a smaller belt it will be hard to put on but it will last forever.