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Emergency Stopping
There are several methods of stopping or
slowing the snowmobile under a variety
of situations. Identified in the following
chart are the ways a snowmobile may be
brought to a stop and the effectiveness
under normal conditions.
Item
Engine Stop Switch interrupts ignition circuit
Throttle/Ignition
Monitor Switch
Ignition Switch
Brake
Tether Switch
Throttle/Ignition
Monitor Switch
The throttle control is equipped with a
monitor switch for safety purposes which
will stop the engine when a loss of return
spring force occurs. If ice forms in the
throttle system or if there is some other
malfunction of the throttle system result-
ing in a loss of return spring force, the
monitor switch will stop the engine when
the throttle control lever is released.
! WARNING
If any malfunction of the throttle sys-
tem occurs (such as freezing in fluffy
snow) and the monitor switch does
not shut off the engine, press down
on the engine stop switch IMMEDI-
ATELY to stop the engine. DO NOT
start the engine until the malfunction
in the throttle system has been
located and corrected.
If the snowmobile engine stops abruptly
when the throttle control lever is released
and the activation of the monitor switch is
suspected, use the following procedure:
1. Rotate the ignition key to the OFF position.
2. Remove ice and snow from the
throttle system and wait 5-10 min-
utes for the engine heat to thaw ice
from the throttle system.
3. Test the throttle control lever by
compressing and releasing it several
times. The lever MUST return to the
idle position quickly and completely.
20
Function
interrupts ignition circuit
interrupts ignition circuit
slows the drive system
interrupts ignition circuit
NOTE: If the throttle control lever
operates properly and the engine
does not start, compress the throttle
lever
slightly
throttle) and try starting the engine.
If the engine now starts and stops
when the throttle lever is released,
take the snowmobile to an autho-
rized Yamaha Snowmobile dealer for
service. If not under warranty, this
service is at the discretion and
expense of the snowmobile owner.
! WARNING
If the throttle control lever does not
work properly, DO NOT ATTEMPT TO
START THE ENGINE.
4. If the throttle control lever operates
properly, rotate the ignition key to
the RUN position and go through
normal starting procedures.
NOTE: If the throttle control lever
operates properly and the engine
does not start, a malfunctioning
monitor switch may be the problem.
Take the snowmobile to an autho-
rized Yamaha Snowmobile dealer for
service. If not under warranty, this
service is at the discretion and
expense of the snowmobile owner.
However, if a dire emergency exists
wherein the engine must be started,
disconnect
the
switch located in the right-side han-
dlebar control.
NOTE: If disconnection of the
throttle monitor switch is needed to
start the engine, take the snowmo-
bile to an authorized Yamaha Snow-
mobile dealer for service as soon as
possible. If not under warranty, this
service is at the discretion and
expense of the snowmobile owner.
(approximately
throttle
monitor
1/8
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