ADJUSTING THE CARBURETOR

The carburetor requires 3 adjustment checks:

A. FULL SPEED NEEDLE to adjust fuel input at maximum regime, when the carburetor throttle is completely open.
Turn clockwise (--) to reduce the quantity of fuel, for leaner carburation.
Turn anti-clockwise (+) to increase the quantity of fuel, for an oilier carburation.

B. BASE SPEED NEEDLE to adjust quantity of fuel in partial acceleration at medium regime, while opening the carburettor barrel.
Turn clockwise (--) to reduce the quantity of fuel, for leaner carburation.
Turn anti-clockwise (+) to increase the quantity of fuel, for a more oily carburation.

C. BASE SPEED ADJUSTING SCREW to adjust the engine’s minimum regime when the carburetor throttle is completely closed.
Turn clockwise (+) to increase the minimum regime.
Turn anti-clockwise (--) to reduce the minimum regime.

N.B.: although the carburetor settings are already indicatively calibrated by the manufacturer, they may need to be adjusted according to various uses of engine and type of fuel.

---

To print this page!