Engine - Cooling

COOLANT LEVEL

The coolant level should be checked daily as a matter of routine.

ONLY EVER INSPECT COOLANT WHEN THE ENGINE IS COMPLETELY COLD. To check level, follow this procedure:

•Check the coolant level in the sub-tank. If the level is close to the lower limit, remove the sub-tank cap and fill with coolant to the upper limit.

•Remove the radiator cap and check the amount of coolant in the radiator. Fill with coolant to the overflow if the level

is low.

Check the difference of the cooling water level before and after operation once a week. Before operation when the engine is cold there should be a low level of coolant. Immediately after operation (when the engine is hot) there should be a high level of coolant. If there is no difference in coolant level before and after the engine operation open the radiator cap and check the coolant volume. Also check the hose linking the radiator and the sub tank to make sure that it is not disconnected, loosened or torn. Check that the hose is inserted to the lower level of the sub-tank (when engine is cold).

COOLING WATER REPLACEMENT

- CAUTION -

Change the cooling water wheni the engine is fully cold to prevent scalding. Never open the radiator cap whilst the engine is hot, this may result in scalding steam and a hot water blow-out.

To change coolant, follow this procedure:

•Position a can to collect the waste fluid.

•Turn the radiator cap anti-clockwise for 90º without pressing it downward.

•Press the cap downward and continue to turn it anti-clockwise to remove. If forcibly turned the cap may become damaged.

•Disconnect the hose between the coolant pump and the radiator out of the cooling pump side. When the coolant is fully drained, reconnect the coolant rubber hose.

•Add coolant whilst bleeding air by pinching or tapping the coolant rubber hose.

•Fill coolant to the upper limit of the sub tank.

•Operate the engine at no-load for about 5 minutes and check for any fluid leakage.

•Check the sub-tank coolant level about 5 minutes after stopping engine and replenish as required.

fig 1

Radiator

Cap

 

 

 

HT

 

 

 

I

 

E

N

 

 

T

G

 

 

 

 

 

 

 

 

 

Y

 

 

 

 

 

 

 

 

 

 

 

 

L

R

 

 

 

 

O

W

E

 

 

 

 

 

 

L

 

 

MOVE S

 

 

fig 2

Radiator

Filling

fig 3

Sub-Tank

Check coolant

 

 

level by examining

 

the sub-tank. The

 

Liquid should be

FULL

visible through the

white plastic tank.

 

LOW

 

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