Yamaha YZ250(P)/LC Owner's Service Manual page 222

RADIATOR
EC456000
HANDLING NOTE
w
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
injury.
When the engine has cooled, open the
radiator cap by the following procedure:
Place a thick rag, like a towel, over the
radiator cap, slowly rotate the cap counter-
clockwise to the detent. This procedure
allows any residual pressure to escape.
When the hissing sound has stopped,
press down on the cap while turning coun-
terclockwise and remove it.
EC454000
INSPECTION
EC444100
Radiator
1. Inspect:
9
Radiator core 1
Obstruction
through rear of the radiator.
Bent fin ¡ Repair/replace.
4-5
ENG
could cause
¡ Blow out with compressed air
serious