Yamaha Rx 1 User Guide

5-3
ESU00023 
Throttle override system (T.O.R.S.)
If the carburetor or throttle cable should malfunction dur-
ing operation, the T.O.R.S. will operate when the throttle
lever is released. 
The T.O.R.S. is designed to interrupt the ignition and
keep the engine revolution speed between 2,800 and
3,000 r/min if the carburetor fails to return to idle when
the lever is released.
WARNING@ 

If the T.O.R.S. is activated, make sure that the
cause of the malfunction has been corrected and
that the engine can be...

5-4
ESU03900 
Speedometer unit
The speedometer unit is equipped with the following:

a digital speedometer (which shows riding speed)

an odometer (which shows the total distance trav-
eled)

a tripmeter (which shows the distance traveled since
it was last set to zero)

warning indicators (which show self-diagnosis, cool-
ant temperature, fuel level, and oil level warnings)

a fuel meter (which shows the fuel remaining in the
fuel tank)

a grip/thumb warmer heat level indicator (which
shows the heat...

5-5
ESU03820 
Fuel meter and grip/thumb warmer heat level
indicator
The fuel meter and grip/thumb warmer heat level indica-
tor have eight segments 
1 which show the amount of
fuel remaining in the fuel tank, the heat level of the grip
warmer, or the heat level of the thumb warmer.
Fuel meter
As the fuel level decreases in the fuel tank, the segments
disappear until the level goes down to the last segment
“E” (Empty). When this occurs, the fuel level warning
indicator 
2 and the warning light 
3 come...

5-6
ESU00287
Fuel level warning indicator
The fuel level warning indicator indicates a malfunction-
ing sensor, disconnected coupler, broken lead, or short
circuit when detected by the self-diagnosis device of the
snowmobile.
The fuel level warning indicator 
1, warning light 
2, and
all segments of the fuel meter 
3 warn the rider of the
above problems by flashing continuously. (See the table
below for warning indicator, warning light and fuel meter
segment flash pattern.) 
When this occurs, have a...

5-7
ESU00360
Low coolant temperature indicator light
The low coolant temperature indicator light 
1 flashes
when the coolant temperature is low and informs the
rider that the snowmobile must be warmed up. After the
engine is started, warm it up until the indicator light goes
off.
The snowmobile can be operated normally after the indi-
cator light goes off.
NOTE:
When the low coolant temperature indicator light flashes,
the engine control system prevents the engine speed
from rising even if the throttle...

5-8
ESU00365
Self-diagnosis warning indicator
The self-diagnosis warning indicator indicates a malfunc-
tioning sensor, disconnected coupler, broken lead, etc.,
when detected by the self-diagnosis device of the snow-
mobile.
The self-diagnosis warning indicator 
1 and warning light
2 warn the rider of the above problems by flashing con-
tinuously. If necessary, ask a Yamaha dealer for further
details. (See page 5-9 for warning indicator and warning
light flash patterns.)
WARNING@ 

If the self-diagnosis...

5-9
CA-14E
No. Self-diagnosis warning indicator and warning light flash patterns
1Warning indicator and warning 
light flash continuously in this 
pattern.
2Warning indicator and warning 
light flash continuously in this 
pattern.
3Warning indicator and warning 
light flash continuously in this 
pattern.
4Warning indicator and warning 
light flash continuously in this 
pattern.
5Warning indicator and warning 
light flash continuously in this 
pattern.
6Warning indicator and warning 
light flash...

5-10
ESU00031 
Engine stop switch
The engine stop switch 
1 is used to stop the engine in
an emergency. Simply push 
2 the stop switch to stop the
engine. To start the engine, pull 
3 the stop switch and
proceed with starting the engine. (See page 7-1 for more
details.) 
During the first few rides, practice using the stop switch
so that you can react quickly in an emergency. 
ESU00033
Brake lever
The snowmobile is stopped by braking the entire drive
system. 
Squeeze the brake lever towards the handlebar...

5-11
ESU00035
Parking brake lever
When parking the snowmobile or starting the engine,
apply the parking brake by moving the brake lever 
1 to
the left. 
To release the parking brake, move the parking brake
lever 
1 to the right.
ÈTo apply the parking brake 
ÉTo release the parking brake
WARNING@ 

Always set the parking brake before attempting to
start the engine. 

Never run the snowmobile with the parking brake
applied. This may overheat the brake disc and
reduce braking ability. 
@ 
ESU00341
Shift...

5-12
ESU00039
Headlight beam switch
Push the headlight beam switch to change the headlight
beam to high or low.
1Headlight beam switch 
2Push 
3High beam 
4Low beam
ESU00048 
Shroud latches
To open the shroud, unhook the shroud latches, and then
slowly raise the shroud forward until it stops. When clos-
ing the shroud, slowly lower it to its home position, and
then hook the shroud latches.
1Shroud latch 
2Shroud
CAUTION:@ 
Make sure that all cables and wires are in place when
closing the shroud. 
@...