Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

I have a rear engine Snapper rider.   I put a new engine on, but can't figure out how to adjust the drive disc correctly.  It will go forward when the shifter is in the first slot, but stops moving forward when I move the shifter forward into the upper slots.  I've tried loosening the drive disc and sliding it down onto the driven disc, but just aren't getting it right.  I'm doing this with the mower tipped up on to its rear, if that matters.

Okay, thanks.  Yes, the engine crank shaft is the same, but I hadn't tried adjusting the spring.  I'll try that.  Appreciate the help.