1985-1987 Honda TRX 250 Fourtrax 250 Service Manual, Page 98Get this manual
CLUTCHOIL PUMPKICK STARTER Remove the oil pump driven gear shaft from the oil pump cover and measure the pump end clearance SERVICE LIMIT: 0.10 mm (0 .004 in)
OIL PUMP ASSEMBLY INSTALLATION
Assemble the oil pump cover with outer and inner rotors onto the oil pump body with the driven gear