1998-2001 Honda Fourtrax Foreman TRX450S, TRX450ES Factory Service Manual, Page 148Get this manual
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CYLINDER HEADCYLINDERJP'ISTQN Push rod Check th at the pu sh rods are not be nt
Measure he crankca se IDat sl idi ng su rface
fo ll ower
SERVICE LJMIiT: 22 .54 mm (0.88