2006-2012 Honda TRX90 TRX90EX/X Service Manual, Page 124Get this manual
CYUNDERPISTON Push rhe rrngs mro rhe cylmder with rhe rop 01 rhe P'Sron to be sure they are squarely in ,he cylmder
Insert the piston ring squarely into the bottom of the cylinder and measure the ring end gapSERVICE LIMITS; Top: 0.50 mm (0.020 in) Second: 0.65 mm (0.026 inl
Oillside raill: 1.00 mm 10.040 inl