2007 Yamaha Motorsports Morphous Owners Manual - Page 85

2007 Yamaha Motorsports Morphous Manual

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PERIODIC MAINTENANCE AND MINOR REPAIR Engine overheating EWA10400 A WARNING • Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be blown out under pressure, which could cause serious injury. Be sure to wait until the engine has cooled. • After removing the radiator cap retaining bolt, place a thick rag, like a towel, over the radiator cap, and then slowly rotate the cap counterclockwise to the detent to allow any residual pressure to escape. When the hissing sound has stopped, press down on the cap while turning it counterclockwise, and then remove the cap. There is leakage. There is no leakage. Have a Yamaha dealer check and repair the cooling system. The coolant level is low. Check the cooling system for leakage. Wait until the engine has cooled. Check the coolant level in the reservoir and radiator. The coolant level is OK. Add coolant. (See NOTE.) Start the engine. If the engine overheats again, have a Yamaha dealer check and repair the cooling system. 6 NOTE: If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended coolant as soon as possible. 6-43

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PERIODIC MAINTENANCE AND MINOR REPAIR
Engine overheating
EWA10400
A
WARNING
•
Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be
blown out under pressure, which could cause serious injury. Be sure to wait until the engine has cooled.
•
After removing the radiator cap retaining bolt, place a thick rag, like a towel, over the radiator cap, and then
slowly rotate the cap counterclockwise to the detent to allow any residual pressure to escape. When the hissing
sound has stopped, press down on the cap while turning it counterclockwise, and then remove the cap.
Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level is low.
Check the cooling system
for leakage.
There is
leakage.
Have a Yamaha dealer check
and repair the cooling system.
There is
no leakage.
Add coolant. (See NOTE.)
The coolant level
is
OK.
Start the engine. If the engine overheats again, have a
Yamaha dealer check and repair the cooling system.
NOTE:
If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended coolant
as soon as possible.
6
6-43