When I engage the self propel on my push mower it feels like its having a hard time going straight. I replaced the front tires already and the drive belt looks ok. Should I replace the front wheel bearings or is this a transmission issue?
post complete Snapper model number, how old is mower? i would suspect a part or parts have come loose or are worn out, careful inspection of drive assembly is needed, remember if you turn mower on it's side do so with air cleaner carburetor side up.
Common problem with this design. Drive system really has only one speed, making it hard to control. On some unit you can slow the speed by changing which hole you mount the upper cable bracket.