2006-2014 Honda FourTrax ATV TRX250 EX TRX250X Service Manual, Page 200Get this manual
CRANKCASETRANSMISSIONCRANKSHAFT Pilot, 35 mm 07746-0040800 Threaded adaptor 07965-KA30000 Assembly colla 07965-VM00100
or 07VMF-HM8010A (U.S.Aonly) Assembly shaft 07965-VM00200
or 07931-ME4010B and 07931 -HB3020A (U.S.Aonly)
TROUBLESHOOTING
Excessive engine noise Worn connecting rod big end bearing Worn crankshaft main journal bearing Wornseized or chipped transmission gears Worn transmission bearings Transmission jumps out of gear Worn gear dogs or dog holes Worn shift drum guide groove Worn shift fork guide pin Worn gear shifter groove Worn shift fork Bent shift fork shaft Faulty gearshift linkage (page 10-6) Hard to shift Damaged shift fork Bent shift fork shaft Damaged shift drum guide grooves Damaged shift fork guide pin Faulty gearshift linkage (page 10-6) Engine vibration Excessive crankshaft runout