18
5.8 Cleaning Sediment Cup
(Figure 8)
5.8 Carburetor Adjustment
(Figure 9)
Note:
On some engines, the pilot screw is fitted with a limiter cap (c) 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.
5.8.1 Turn fuel valve off.
5.8.2 Remove sediment cup (a) and O-ring (b).
5.8.3 Wash both thoroughly in a nonflammable
solvent. Dry and reinstall them.
5.8.4 Turn fuel valve on and check for leaks.
5.9.1 Start the engine and allow it to warm up to
operating temperature.
5.9.2 Set the pilot screw (a) 2 turns out. See
Note.
5.9.3 With the engine idling, turn the pilot screw
(a) in or out to the setting that produces the
highest rpm.
5.9.4 After the pilot screw is adjusted, turn the
throttle stop screw (b) to obtain the standard idle
speed. See Technical Data.
