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