Water and Coolant Mixture Ratio (Recommended)
Choose a suitable mixture ratio by referring to the
coolant manufacturer's directions.
Bleed the air from the cooling system as follows.
Start the engine with the radiator cap removed and run it
until no more air bubbles [A] can be seen in the coolant.
Tap the radiator hoses to force any air bubbles caught
Stop the engine and add coolant up to the radiator filler
Install the radiator cap.
Start the engine, warm it up thoroughly until the radiator
fan turns on and then stop the engine.
Check the coolant level in the reserve tank after the en-
gine cools down.
If the coolant level is lower than the low level line, add
coolant to the full level line.
Do not add more coolant above the full level line.
Engine Top End
Air Suction Valve Check
Remove the air suction valve (see Engine Top End chap-
Visually inspect the reeds [A] for cracks, folds, warps,
heat damage, or other damage.
If there is any doubt as to the condition of the reed, replace
the air suction valve as an assembly.
Check the reed contact areas [B] of the valve holder for
grooves, scratches, any signs of separation from the
holder, or heat damage.
If there is any doubt as to the condition of the reed contact
areas, replace the air suction valve as an assembly.
If any carbon or other foreign particles have accumulated
between the reed and the reed contact area, wash the
valve assembly with a high flash-point solvent.
Do not scrape off the deposits with a scraper as this
could damage the rubber, requiring replacement of
the suction valve assembly.
– 35°C (– 31°F)
2.4 L (2.5 US qt)
PERIODIC MAINTENANCE 2-21