BPU 2440/2950 Repair Maintenance
wc_tx000328gb.fm 25
4.6 Adjusting Idle Speed
See Graphic: wc_gr001122
Adjust engine to the no load or idle speed per the Technical Data.
4.6.1 Start the engine and allow it to warm up to normal operating
temperature.
4.6.2 Turn the throttle stop screw (a) in to increase speed, out to decrease
speed. Make sure the throttle lever is touching the stop screw before
measuring rpm.
4.7 Carburetor Adjustment
See Graphic: wc_gr0001061
The pilot screw (a) is fitted with a limiter cap to prevent excessive
enrichment of the air-fuel mixture in order to comply with emission
regulations. The mixture is set at the factory and no adjustment should
be necessary. Do not attempt to remove the limiter cap. The limiter cap
cannot be removed without breaking the pilot screw.
wc_gr001122
a
wc_gr001061
a
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