Yamaha 4TX-AE1, Service Manual

Page: 88 / 332

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COOLANT LEVEL INSPECTION/
COOLANT REPLACEMENT
INSP
ADJ
CAUTION:
WARNING
NOTE:
NOTE:
Hard water or salt water is harmful to the en-
gine parts; use boiled or distilled water if you
can’t get soft water.
COOLANT REPLACEMENT
1. Remove:
Side cowling (right)
Seat
Refer to “COWLINGS, SEAT, TAIL COVER
AND FUEL TANK”.
Do not remove the radiator cap when the en-
gine and radiator are hot. Scalding hot fluid
and steam may be blown out under pressure,
which could cause serious injury. When the
engine has cooled, open the radiator cap by
following this procedure:
Place a thick rag or a towel over the radiator
cap. Slowly rotate the cap counterclockwise to
the detent. This allows any residual pressure
to escape. When the hissing sound has
stopped, press down on the cap while turning
counterclockwise and remove it.
Position the motorcycle straight up when replac-
ing the coolant.
2. Place the motorcycle on a level surface.
Place the motorcycle on its centerstand if a cen-
terstand is equipped. If not, place a suitable stand
under the motorcycle.
3. Remove:
Water pump drain bolt (with gasket) 1
Cylinder drain bolt (with gasket) 2
Radiator cap 3
Drain the radiator and engine of its coolant.
4. Disconnect:
Coolant reservoir hose 4