Adjusting The Idle Speed - APRILIA RS4 50 2011 Workshop Manual

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Power supply
- If the throttle valve is replaced, fit another with the
standard settings indicated on the top surface as
shown in the photograph
- Re-assemble the whole carburettor
- Refit the carburettor to the engine, connect the
fuel pipes again, the mixer oil intake pipes and the
vacuum pipe for the fuel cock control

Adjusting the idle speed

- Tighten the flow set screw slowly until it stops and then unscrew it as many turns as specified for this
type of engine (1+1/4)
- Remember this is the first adjustment
- Warm the engine up to the regular operating temperature
- Adjust the idle speed at 1600 ± 200 rpm by operating the idle speed set screw
- Turn the flow set screw (1) to both sides until the maximum rpm possible is obtained
P SUPP - 142
RS4 50 MY2011

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