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