the cooling system. If this accumulation is not removed,
it will clog
the water passages and considerably reduce
the efficiency of the cooling system
-Drain the cooling system
Fill the cooling system with fresh water mixed with a
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and radiator. Carefully follow the instructions supplied
by the manufacturer of the cleaning
Warm up the
and run it at normal operating
temperature for about ten minutes.
and drain the cooling system
Fill the system with fresh water.
Warm up the
and drain the system
-Repeat the previous two steps once
Fill the system with a permanent type
bleed the air from the system
Any time the system slowly looses
should be pressure
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is designad to
The maximum pressure is 1.05
Set the motorcycle up on its center stand
-Remove the radiator
and install a cooling system
pressure tester on the radiator filler neck.
-Build up pressure in the system carefully until the
pressure reaches 1.05 kg/cm
Watch the gauge for at least 6
If the pressure
the system is all right.
-Remove the pressure
install the radiator cap
-Run the engine until normal operating temperature is
-Remove the radiator cap
and recheck for leaks
lf the pressure drops, check all areas for external
trace or source of leakage shows the
damaged seal or part.
: Coolant leakage from the drainage outlet in the
cylinder block shows the damaged mechanical seal (Fig.
lf the pressure drops and no external source is found
check for internal leaks.
Droplets in the engine oil
in dicate internal leakage.
Internal water sealing is
rings between the cylinder sleeves
and the cyli nder
cylinder head gasket, and
mechanical seal at the water pump.
Since the ball bearings are made to extremely close
the wear must be judged by feel rather than
Clean each bearing in a high flash -point
it (do not spin it while it is dry
and oil it. Spin it
by hand to check its condition. If it is
or has any rough
The rollers in the needle bearings wear so little that
the wear is difficult to
bearings for abrasion
color change, or other damage.
If there is any doubt as to the condition of either
bearing, replace it.
The crankshaft oil seal in the right engine cover
forms a seal between the crankchamber and the contact
If this seal is damaged
leak into the contact breaker point
the contact breaker points. Any damaged
or otherwise defective oil seal will allow oil to
Oil seal damage
Inspect the oil
and replace any
the lips are
discolored (indicating the rubber has
or otherwise been
an oil seal is nearly always damaged on removal
oil seals must be
When pressing in an oil seal
which has manufacturer 's
press it in with the
Press the seal in so that the face of
the seal is level with the surface of its