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31/CARBURETOR
Choke
21.1
Checking the play in the throttle cable
21.2
Carburetor - adjusting idle
21.3
The choke
is fitted on the left side of the carburetor.
Activating the choke function frees an opening through which the engine can draw
extra fuel. This gives a richer fuel-air mixture, which is needed for a cold start.
Info
If the engine is warm, the choke function must be deactivated.
Possible states
Choke function activated – The choke lever is pulled out to the stop.
•
301780-10
Choke function deactivated – The choke lever is pushed in to the stop.
•
–
Move the handlebar to the straight-ahead position. Move the throttle lever back and
forth slightly to ascertain the play in the throttle cable
Guideline
Play in throttle cable
»
If the throttle cable play does not meet specifications:
–
Adjust the play in the throttle cable. (
Danger
Danger of poisoning Exhaust gases are poisonous and inhaling them may
301795-11
result in unconsciousness and/or death.
–
When running the engine, always make sure there is sufficient ventila-
tion, and do not start or run the engine in an enclosed space without an
effective exhaust extraction system.
–
Start the engine and let it run idle. Move the handlebar to and fro over the entire
steering range.
The idle speed must not change.
»
If the idle speed changes:
–
Adjust the play in the throttle cable. (
–
Screw in the idle adjusting screw
setting.
Guideline
Idle mixture adjusting screw
Open
Adjustment tool for mixture control screw (59029034000) (
–
Run the engine until warm.
Guideline
301826-10
Warm-up time
–
Adjust the idle speed with the adjusting screw
Guideline
Choke function deactivated – The choke lever is pushed in to the stop.
(
p. 162)
Idle speed
Info
If the idle speed is set significantly higher, the engine does not start. When
the electric starter button is activated, the electric starter turns over the
engine, but the engine does not start because there is no ignition spark.
–
Turn the idle adjusting screw
.
3... 5 mm (0.12... 0.2 in)
p. 14)
p. 14)
until it stops and then to the prescribed basic
1.5 turns
≥ 5 min
.
1,500... 1,600 rpm
slowly clockwise until the idle speed begins to fall.
162
p. 229)
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