13. COOLING SYSTEM
13-8
Water Pump
Check water pump seal / cooling
system divulges inspection
Disassembles the coolant drain bolt, overflow
some coolant, check if the coolant has the oil
pollution or not.
Turn off the oil filler plug, check if the engine oil
becomes milky white or not.
If the above two kinds of interior leaking situation
occur, possibly caused by the water pump inner
seals damage, the engine cooling system damage
or the cylinder head gasket damage. Check the
water pump seals first. If the water pump seals are
ok, inspect the cooling system of the cylinder and
the cylinder head.
Water pump removal
Remove the recoil starter cover assy. and the
starter driven pulley.
Loosen the drain bolt to drain the coolant.
Remove the water hose.
Loosen 5 bolts and remove the pump cover.
Loosen 12 bolts and remove the right cover.
Take off the gasket and dowel pins.
Unscrew the pump impeller clockwise and remove
it.
Caution
The impeller is provided with left turn thread.
Remove the water pump shaft
To this chapter contents
Drain bolt
Starter driven pulley
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