The water pump in the engine keeps the radiator fluid in circulation throughout
the motor. The air stream running through the radiator cools the radiator fluid.
Therefore dirty radiators additionally reduce the cooling effect.
Cobra has tested numerous brand name automotive and racing coolant /
antifreeze solutions and has found
Liquid Performance
Propylene Glycol based
Mini Coolant / Antifreeze to have the greatest effect on reducing cylinder head
temperatures.
Radiator fluid removal:
1.
Remove the coolant drain plug (A) on the front of the engine case (figure 39).
Figure 39
To remove radiator cap:
1. Turn the cap counter clockwise to the first stop and wait there for a few seconds.
2. Push the cap down and turn it further in the same direction and remove the cap.
NOTE:
Inspect the old coolant for visual evidence of corrosion and abnormal smell.
Fill the radiator up to the bottom of the radiator filler neck with coolant. Install the cap,
turning it clockwise about ¼ turn.
Tools recommended for impeller service:
•
Flat head screwdriver
•
13mm- hex wrench
•
3mm hex key
•
4mm hex key
•
5mm hex key
•
Propane torch
•
3/8” diameter x 8” long steel rod
•
Hammer
COBRA IMPELLER SERVICE INSTRUCTIONS
1. Remove exhaust pipe and gas tank (you will be using a propane torch in step 12.
2. Remove radiator cap and drain engine coolant by removing the 13mm- hex head
coolant drain plug.
3. If the impeller is damaged or broken completely back flush the coolant system to
ensure no solid pieces are in the system.
4. Remove foot brake.
A
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