1987 Honda Fourtrax TRX 250X Service Manual, Page 98Get this manual
CLUTCHOIL PUMPKICK STARTER Remove the oil pump driven gear shaftMeasure the pump end clearanceSERVICE LIMIT; 010 mm 10.004 in}
ASSEMBLY
Install the outer and inner rotors into the pump body, Insert the driven'gear shaft into the pump cover and install the dowel pin, Align the flats on the inner rotor and gear shah, then install the cover on the body with the dowel pins in the hole