1999-2004 Honda TRX400EX FourTrax Service Manual, Page 117Get this manual

1999-2004 Honda TRX400EX FourTrax Service Manual, Page 117

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CYLINDERPISTON

Do not confuse the top and second ringsTo install the oil ring, install the spacer first, then install the side rails
Stagger the piston ring end gaps 120" degrees ap