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17
Operating Instructions
Pre-Start
It is imperative that the brake system be
checked for wear and proper operation
and that all safety checks be performed
before attempting to start the engine.
After the engine has been started, check
the headlights (high and low beam), tail-
light, and brake light to be sure they are
working properly and adjusted correctly.
Make sure all lights are clean to provide
maximum illumination. The headlight
and taillight must be clean and must be
illuminated whenever the engine is run-
ning.
1. Test the operation of the brake sys-
tem by compressing the brake
lever. The brake lever must feel
firm when compressed; then while
holding the brake lever in the com-
pressed position, measure the dis-
tance between the brake lever and
the handlebar. The distance must
be greater than 12.7 mm (1/2 in.).
0752-475
2. With the brake fluid reservoir in a
level position and the cover
removed, check the fluid level. The
brake fluid level must be at the high
brake fluid mark in the reservoir.
0752-476
3. If the brake fluid is below the high
brake fluid mark, add Yamaha-
approved DOT 4 brake fluid until
the fluid is at the recommended
level. Install and secure the reservoir
cover. Do not allow moisture to con-
taminate the brake system.
4. Test the throttle control lever by
completely compressing and releas-
ing it several times. The lever
MUST return to the idle position
quickly and completely.
5. Make sure the battery is fully
charged to ensure the engine is turn-
ing over at a sufficient RPM to start.
NOTE: Even though the engine
turns over, the engine may not have
sufficient RPM to start.
6. Check the spark plugs and replace as
necessary. Short engine run times
cause carbon buildup on spark
plugs.
7. Ensure the gas tank is full of fresh
gas whenever the snowmobile is
removed from storage.
CAUTION
Brake fluid is highly corrosive. Do
not spill brake fluid on any surface of
the snowmobile.
! WARNING
Do not overfill the brake fluid reser-
voir. Overfilling the reservoir may
cause the brake system to hydrauli-
cally lock. Use only Yamaha-
approved brake fluid.
! WARNING
Do not start the engine if the brake sys-
tem is not functioning properly. Service
the brake system or have it properly
repaired prior to operating the snow-
mobile. Serious personal injury or even
death may occur if the brake system is
not operating properly.
CAUTION
Always check the coolant level
before starting the engine.
Summary of Contents for SXV4NP
Page 53: ...51 Snowmobile Safety Rules ...