Yamaha NIKEN MXT850, Owner'S Manual

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Perio d ic maintenance an d a d justment
6-36
6
En g ine overheatin g
WARNING
EWAT1041

Do not remove the ra d iator cap when the en g ine an d ra d iator are hot. Scal d in g hot flui d an d steam may b e
b lown out un d er pressure, which coul d cause serious injury. Be sure to wait until the en g ine has coole d .

Place a thick ra g , like a towel, over the ra d iator cap, an d then slowly rotate the cap counterclockwise to the
d etent to allow any resi d ual pressure to escape. When the hissin g soun d has stoppe d , press d own on the cap
while turnin g it counterclockwise, an d then remove the cap.
TIP
If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended cool-
ant as soon as possible.
Wait until the
engine has cooled. Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.
The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer check
and repair the cooling system.
Add coolant. (See TIP.)
Start the engine. If the engine overheats again, have a
Yamaha dealer check and repair the cooling system.
There is
leakage.
There is
no leakage.
UBD5E0E0.book Page 36 Wednesday, April 25, 2018 2:23 PM