While you wait for answers, we may have found some information which could help you.
Success
Message
Can't get front pulley off yard machine rider?
How do I adjust the tension on a 42 inch yard machine belt ?
howcan i fix my rx73 riding mower?
loose belt?
transmission oil ?
How do I tighten the drive cable on a yard machine snow blower?
What size engine is the Classic 35 100cc or 145cc?
no spark?
Engine runs wide open unless brake pedal is pulled completely back. Why?
adjust variable mechanism -- how/??
what to do to slow down the high rev?
rebuilding a lawnmower engine?