Honda GL1800 Service Manual page 228

COOLING SYSTEM
Coat a new O-ring with engine oil and install it into
-RING
the groove in the water pump.
Install the water pump into the rear crankcase cover
while aligning the flat end of the pump shaft joint
with the slot in the starter clutch bolt.
Install a new O-ring onto the water pump groove.
-RING
RUBBER SE L HOLE
Install a new rubber seal onto the thermostat flange.
Install the thermostat into the water pump cover
with the hole facing upward while aligning the lug
with the cover groove as shown.
lign
Install the water pump cover onto the pump.
Install the three cover bolts and three mounting
bolts, and tighten them.
TORQUE: Cover bolt: 13 N·m (1.3 kgf·m, 9 lbf·ft)
6-19