1999-2002 TRX400EX Fourtrax Service Manual, Page 113Get this manual
CYLINDERPISTON
CYLINDERPISTON REMOVAL
CYLINDER REMOVAL
Removethe cylinder head (section 7)Removethe two mm cylinder bolts
Do not strike the cylinder too hard and do not damage the mating surface with screwdriver
Removethe cam chain guide (front)Removethe four 10 mm cylinder bolts and washersRemovethe cylinder