Yamaha MT-125, Owner'S Manual

Page: 85 / 98

Perio d ic maintenance an d a d justment
6-43
6
En g ine overheatin g
WARNING
EWA10401

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 .

After removin g the ra d iator cap retainin g b olt, place a thick ra g , like a
towel, over the ra d iator cap, an d then slowly rotate the cap counter-
clockwise 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 coolant as soon as possible.
Wait until the engine
has cooled.
Check the coolant
level in the reservoir
and radiator.
Add coolant.
(See TIP.)
The coolant level is
OK.
There is no leakage.
There is leakage.
The coolant level is
low.
Check the cooling
system for leakage.
Have a Yamaha
dealer check and
repair the cooling
system.
Start the engine. If the engine overheats again,
have a Yamaha dealer check and repair the cooling
system.
UBR3E0E0.book Page 43 Friday, June 19, 2015 1:19 PM