Varying Altitude Operation - Yamaha SR1NLK Operator's Manual

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 proce-
dure:
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.

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 moni-
tor switch may be the problem. Take
the snowmobile to an authorized
Yamaha Snowmobile dealer for ser-
vice. If not under warranty, this ser-
vice is at the discretion and expense
of the snowmobile owner. However, if
a dire emergency exists wherein the
engine must be started, disconnect
the throttle monitor switch located in
the right-side handlebar control.
16
(approximately

NOTE: If disconnection of the throt-
tle monitor switch is needed to start
the engine, take the snowmobile to an
authorized
dealer for service as soon as possi-
ble. If not under warranty, this service
is at the discretion and expense of the
snowmobile owner.
! WARNING
Under no circumstances should dis-
connection of the throttle control wir-
ing harness be used as a substitute
for the monitor switch during normal
operation of the snowmobile. Per-
sonal injury and damage could occur
if the throttle system malfunctions or
if the operator is unable to stop the
engine in an emergency. If the snow-
mobile must be operated with a dis-
connected
1/8
harness, EXTREME CAUTION MUST
BE TAKEN. NEVER EXCEED 10 MPH
WITH THE THROTTLE CONTROL WIR-
ING HARNESS DISCONNECTED.

NOTE: The monitor switch is now
bypassed. All other ignition/electrical
features (ignition switch, emergency
stop switch, headlight, taillight, and
brake light) will operate properly.
Varying Altitude
Operation
Operating a snowmobile at varying alti-
tudes requires changes in performance
components. These changes affect drive
train components. Have a Yamaha dealer
perform altitude-related service.

NOTE: Just as important as cali-
brating the snowmobile for higher alti-
tudes is recalibrating the snowmobile
when going to lower altitudes.

NOTE: Drive train changes can be
made by the snowmobile owner if
qualified to do so. If the owner does
not feel qualified, take the snowmo-
bile to an authorized Yamaha Snow-
mobile dealer for this service. This
service is at the discretion and
expense of the snowmobile owner
Yamaha Snowmobile
throttle control wiring
.