Snowmobile Yamaha RX1 (2003 year). Manual - part 21

8-31

ESU00208 

Headlight bulb replacement

1. Lift up the shroud. 
2. Disconnect the headlight connector. 
3. Remove the bulb holder cover. 
4. Remove the bulb holder by depressing and turning it

counterclockwise.

1 Bulb holder cover

5. Remove the bulb.

WARNING

@ 

Keep flammable products or your hands away from
the hot bulb until it cools down. 

@

6. Install the new bulb.

CAUTION:

@ 

Keep oil or your hands away from the glass part of
the bulb or its life and illumination will be affected. 
If the glass is oil stained, thoroughly clean it with a
cloth moistened with alcohol or lacquer thinner. 

@ 

ESU00372

Headlight beam adjustment

1. Lift up the shroud.
2. Insert a Phillips screwdriver into the hole under the

shroud to access the headlight beam adjuster 

1.

3. Turn the headlight beam adjuster to adjust the head-

light beam.

Headlight beam moves:
a Down
b Up

Bulb type: 12 V, 60/55 W

8-32

ESU00355

Battery

This snowmobile is equipped with a sealed-type (MF)
battery, which does not require any maintenance. There
is no need to check the electrolyte or to add distilled
water.
To charge the battery
Have a Yamaha dealer charge the battery as soon as
possible if it seems to have discharged. Keep in mind
that the battery tends to discharge more quickly if the
snowmobile is equipped with electrical accessories.

WARNING

@ 

Battery electrolyte is poisonous and dangerous. It
contains sulfuric acid and can cause severe burns.
Avoid contact with skin, eyes, or clothing. 
ANTIDOTE: 

●

EXTERNAL: Flush with water. 

●

INTERNAL: Drink large quantities of water or
milk. Follow with milk of magnesia, beaten egg,
or vegetable oil. Call physician immediately. 

●

EYES: Flush with water for 15 minutes and get
prompt medical attention. 

Batteries produce explosive gases. Keep sparks,
flame, cigarettes, etc. away. Ventilate when charging
or using in an enclosed space. Always shield your
eyes when working near batteries. 
KEEP OUT OF THE REACH OF CHILDREN. 

@

ESU00357

Fuse replacement

WARNING

@ 

Be sure to use the specified fuse. A wrong fuse
could cause electrical system damage or A FIRE
HAZARD. 

@

CAUTION:

@ 

Make sure that the main switch is turned off to pre-
vent accidental short circuiting. 

@

8-33

1. Lift up the shroud. 
2. Unhook the latch 

1. 

3. Loosen the joint clamp screws 

2, and then slide the

breather hose clip 

3 down. 

4. Disconnect the breather hose, and then remove the

air filter case. 

5. Replace the blown fuse with one of proper amperage. 
6. Install the air filter case by reversing the removal

steps.

NOTE:

@ 

If the fuse immediately blows again, ask a Yamaha
dealer to inspect the snowmobile. 

@

9 Spare fuses (20 A, 10 A) 
0 Spare main fuse

Specified fuses: 
4Main fuse:

30 A

5“HEAD” (Headlight) fuse:

20 A

6“SIG” (Signal) fuse:

10 A

7“C/W” (Carburetor Warmer) fuse:

20 A

8“IGN” (Ignition) fuse:

10 A

9-1

ESU00358

9-

TROUBLESHOOTING

A. Engine turns over but does not start

1. Fuel system

No fuel supplied to combustion cham-
ber 

●

No fuel in tank ... Supply fuel.

●

Clogged fuel line ... Clean fuel line.

●

Clogged carburetor ... Clean carbure-
tor. 
Fuel supplied to combustion chamber

●

Flooded engine (too much choke) ...
Crank engine with throttle open or wipe
the spark plugs dry.

2. Electrical system 

Poor or no spark

●

Spark plugs are dirty with carbon or are
wet ... Remove carbon or wipe the
spark plugs dry; replace if necessary. 

●

Faulty ignition system ... Ask a Yamaha
dealer to inspect. 

●

T.O.R.S. system malfunction ... Discon-
nect the carburetor switch connectors
and connect the wire harness connec-
tors together to bypass the T.O.R.S.

WARNING

@ 

●

Before bypassing the T.O.R.S., make
sure that the throttle returns prop-
erly to the fully closed position. 

●

The T.O.R.S. is an important safety
device; in the case of a malfunction,
take the snowmobile to a Yamaha
dealer immediately for repair. 

@

3. Compression 

Insufficient 

●

Loose cylinder head nuts ... Tighten
nuts properly. 

●

Worn or damaged gasket ... Replace
gasket. 

●

Worn or damaged piston and cylinder
... Ask a Yamaha dealer to inspect.

B. Starting the engine with a dis-

charged battery

If the snowmobile battery is discharged,
the engine can be started using a 12-volt
battery and jumper cables. Two connecting
leads have been provided for jump-starting
the snowmobile. Due to the rubber engine
mounting, the snowmobile frame is not a
suitable grounding point for jump-starting
the engine.

WARNING

@ 

●

Connect the jumper cables only to
the connecting lead terminals. Do
not connect them to the frame or
any wire or other lead. 

●

When connecting the jumper cables,
do not contact the jumper cables or
connecting lead terminals to each
other or to the frame or any metal
part of the snowmobile. This can
cause electrical system damage or
A FIRE HAZARD. 

@

CAUTION:

@ 

Use the connecting leads to jump-start
the snowmobile only. Do not use the
connecting leads for any other purpose. 

@

1. Apply the parking brake and turn the

main switch to “OFF”.