Husqvarna SMS 125 2011, Workshop Manual

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G.23
CR 125 2011 - WR 125 2011
ENGINE OVERHAUL
Workshop Manual Ed. 06-2011
How to set the carburettor
The paragraphs below explain how to modify the carburettor setting.
Before making any changes, operate the motorcycle and observe the reactions
of the engine to different openings of the throttle control, accelerations, etc. ...
Always start from the default setting when making any changes.
For the standard setting refer to the data in chapter “A”.
Idle circuit adjustment
- Adjust the idle adjuster screw following the instructions in the chapter “SET -
TINGS AND ADJUSTMENTS”.
- Following the guidelines above, establish if the idle jet in use is correct. If the
mixture is rich, replace the jet with a smaller one; if it is poor, replace it with
a larger one.
EXAMPLE: with an initial jet of 40, if the mixture is rich, change to a jet of
35;conversely, change to a jet of 45.
For available jets see Parts Catalogue.
Open throttle circuit adjustment
With an opening of the throttle control from 3/4 to maximum, once the idle circuit
has been adjusted, perform the open throttle circuit adjustment by following the
instructions above.
- Before performing the off-idle circuit adjustment, adjust the open throttle cir -
cuit.
EXAMPLE: with an initial jet of 400, if the mixture is rich, change to a jet of
390; if it is poor, change to a jet of 410.
For available jets see Parts Catalogue.
Off-idle adjustment
Check the state of the mixture and perform the adjustment by choosing the
suitable taper needle.
Final idle circuit adjustment
Perform the final adjustment once all adjustments have been performed cor -
rectly.
- Turn the idle air screw of 1/2 to 2 turns to adjust the mixture.
- If the mixture cannot be adjusted, perform the idle circuit adjustment again.