Periodic maintenance and adjustment
62
gine oil drain bolts, the cylinder head
cap, and the oil filler cap are installed
correctly.
20. Turn the engine off, and then connect the
oil level gauge coupler.
NOTICE:
If oil is
leaking or the oil level warning indica-
tor comes on when the engine is run-
ning, immediately turn the engine off
and have a Yamaha dealer check the
snowmobile. Continuing to operate
the engine under such conditions
could cause severe engine damage.
[ECS00472]
21. Place the bottom panel in the original po-
sition, and then install the bolts.
22. Place the right lower cover in the original
position, and then install the screws and
the bolts.
23. Install the top cover, the right side cover,
and the shroud.
ESU14751
Cooling system
The coolant level should be checked before
each ride. In addition, the cooling system
must be bled at the intervals specified in the
periodic maintenance and lubrication chart.
WARNING
EWS00381
Do not remove the coolant reservoir cap
when the engine is hot. Scalding hot fluid
and steam may be blown out under pres-
sure, which could cause serious injury.
When the engine has cooled, place a thick
rag or towel over the coolant reservoir
cap, and 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.
To check the coolant level
1.
Place the snowmobile on a level surface
and apply the parking brake.
2.
Remove the shroud and the right side
cover. (See page 50 for removal proce-
dures.)
3.
Check the coolant level in the coolant
reservoir when the engine is cold. If the
coolant level is below the “COLD LEVEL”
mark, add coolant until it reaches the
“COLD LEVEL” mark. (See the following
section “Replenishing the coolant” for
more details.)
NOTICE:
If coolant is not
available, use distilled water or soft
tap water instead. Do not use hard
water or salt water since it is harmful
to the engine. If water has been used
instead of coolant, replace it with
coolant as soon as possible, other-
wise the cooling system will not be
protected against frost and corrosion.
If water has been added to the cool-
ant, have a Yamaha dealer check the
1. Right lower cover
1
1. Coolant reservoir cap
1
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