Honda Hawk GT NT650 1988 Service Manual page 31

Remove the oil pump shaft from the oil pump and measure the
pump end clearance.
SERVICE LIMIT: 0.10 mm (0.004 in)
Temporarily install the shaft in the pump body.
Measure the inner rotor tip clearance.
SERVICE LIMIT: 0.20
mm
(0.008
in)
Replace the oil pump, if necessary as an assembly.
ASSEMBLY
(1) PUMP BODY
(2) OUTER ROTOR
LUBRICATION
(10) O-RING
(11) OIL STRAINER
2-7