Yamaha RST90K Owner's Manual download pdf (Page 25)

5-7

ESU04180

Coolant temperature warning indicator

If the engine overheats, the coolant temperature warning

indicator

and the warning light

come on. When this

occurs, stop the engine immediately and allow the

engine to cool down, and then check the coolant level in

the coolant reservoir. (See page 6-4.)

CAUTION

Do not operate the engine if it overheats.

ESU04251

Self-diagnostic system

This model is equipped with a self-diagnostic system for

various electrical circuits.

If any of those circuits are defective, the warning light

and the self-diagnosis warning indicator

will flash, and

then an error code (e.g., Er_1, Er_2, 16, 81)

will flash

slowly in the tripmeter/odometer display.

WARNING

●

If the self-diagnosis warning indicator and warn-

ing light flash continuously, and an error code is

displayed during operation, there may be some

problem with the electrical circuit, lead couplers,

etc.

●

Stop the engine and allow it to cool off. Then,

check that the wire harness couplers in the

engine compartment are connected properly.

●

If the self-diagnosis warning indicator, warning

light, and an error code flash after the engine has

been restarted, note the error code, and then

have a Yamaha dealer inspect the snowmobile as

soon as possible.

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Yamaha RST90K Owner's Manual Page 25