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3. Transmission box has problem
Problem
Reason
Solution
Each gears not
right
Screw and round but at the back of main
shaft is loosen.
Assemble main shaft
well, and tight the
bolt at back.
Can’t turn to
needed forward
gear
Block worn out
Change
Driving umbrella gear loosen
Tight bolt and nut
Spring of main shaft invalid
Change
Main shaft raid, screw of case back cover
loosen
Tight
Reverse gear can’t
hang on
Reverse fork worn
Change
Reverse cable can’t work well
Adjust or change
Reverse axle loose
Tight bolt at back of
reverse axle
Reverse fork block
Clean until it turn
well
Reverse gear don’t
return
Reverse axle loose and cause gear block
Tight bolt at back of
reverse axle
Spring on reverse axle can’t work
Change
Reverse axle bend
Change
Reverse axle
loosen
Bolt at back of reverse axle loosen
Tight
Reverse axle and gear box not fixed well
Change
Gears has big noise
Umbrella axe, reverse axle bend
Change
Gears worn out seriously
Change
Umbrella axle, reverse axle can’t fixed well
Change
Mainshaft leak oil
Oil plug on mainshaft invalid
Change
Reverse axle leak
oil
O-ring invalid
Change
Clutch fork leak oil
O-ring invalid
Change
