16
This cool-down period will vary
depending upon the ambient air tem-
perature and the temperature of the
brake fluid. If loss of brakes has
occurred because of high fluid tem-
peratures, do not operate the snowmo-
bile until the cool-down period has
expired and brake lever firmness has
returned.
2. Be sure to maintain the brake fluid at
the proper level and take care not to
get any moisture in the system as
moisture in the brake fluid lowers the
boiling point. If the brake fluid is ever
boiled (by high speed stops or repeti-
tive use) or if moisture is allowed to
enter the system, it must be changed.
Never substitute or mix different
types or grades of brake fluid.
3. Never ride the brake. Even main-
taining minimal pressure on the
brake lever will cause the brake pads
to drag on the disc and may overheat
the brake fluid.
4. The brake lever lock is not a parking
brake and should not be applied for
periods exceeding 5 minutes.
NEVER OPERATE THE SNOW-
MOBILE WITH THE BRAKE
LEVER LOCK ENGAGED.
5. Pumping the brake lever is permissi-
ble; however, if pumping the brake
lever more than twice is necessary to
obtain the necessary stopping power,
immediately take the snowmobile to
an authorized Yamaha Snowmobile
dealer for service. If not under war-
ranty, this service is at the discretion
and expense of the snowmobile
owner.
6. When new brake pads are installed,
a “burnishing” process is required.
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.
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
Excessive, repetitive use of the
hydraulic brake for high speed
stops will cause overheating of the
brake fluid and premature brake
pad wear which will result in an
unexpected loss of brakes.
WARNING
Use only Yamaha approved DOT 4
brake fluid. Never substitute or mix
different types or grades of brake
fluid. Brake loss can result. Check
brake fluid level and pad wear
before each use. Brake loss can
result in severe injury or even death.
WARNING
The brake lever lock is not a park-
ing brake and should not be applied
for periods exceeding 5 minutes.
The brake lever lock maintains the
brake lever in the compressed posi-
tion and maintains pressure against
the brake disc; however, after a
period of time, the pressure applied
to the brake disc may relax below
the amount required to hold the
snowmobile stationary.
Item
Function
Emergency Stop
Switch
interrupts ignition circuit
Throttle/Ignition
Monitor Switch
interrupts ignition circuit
Ignition Switch
interrupts ignition circuit
Brake
slows the drive system
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