Excessive noise
- Worn crankshaft main journal bearings
- Worn connecting rod bearings
- Worn connecting rod small end
- Worn, seized or chipped transmission gear
- Worn or damaged transmission bearing
Hard to shift
- Bent shift fork
- Bent shift fork shaft
- Damaged shift drum guide groove
- Damaged shift fork guide pin
Transmission jumps out of gear
- Worn gear dogs or slots
- Worn shift drum guide groove
- Worn shift fork guide pin
- Worn shift fork groove in gear
Excessive output gear noise
- Worn or damaged output drive and driven gears
- Worn or damaged gear case bearings
- Excessive backlash between output drive and driven gears
- Incorrect adjustment shim