Starting a Flooded Engine
WARNING!
Burn danger from hot engine! Allow engine to cool before removing cylinder cover.
1.Disconnect the spark plug lead, and then use the spark plug wrench to loosen and remove the spark plug.
2.If the spark plug is fouled or is soaked with fuel, clean or replace the plug as necessary. For spark plug specifications and gapping procedure, see page 9.
3.With the spark plug removed, crank the engine several times to clear excess fuel from the combustion chamber.
4.Replace the spark plug and tighten it firmly with the spark plug wrench. If a torque wrench is available, torque the spark plug to
5.Repeat the starting procedures for a warm engine.
CAUTION!
Incorrect spark plug installation can damage the engine!
6.If the engine still fails to start or fire, refer to the troubleshooting chart at the end of this manual.
Figure 9
Spark Plug
Lead
Spark
Plug
Adjusting Engine Idle
The engine must return to idle speed whenever the throttle lever is released. Idle speed is adjustable, and must be set low enough to permit the engine clutch to disengage the cutters.
Idle Speed Adjustment
1.Start the engine, and then allow it to idle
2.If the cutters move when the engine is at idle, reduce idle speed by turning the idle adjustment screw counterclockwise.
3.If a tachometer is available, the engine idle speed should be
4.Carburetor fuel mixture adjustments are preset at the factory and cannot be adjusted or serviced in the field.
WARNING!
The cutters must NEVER engage at engine idle speeds! If the idle speed cannot be adjusted by the above procedure, return the trimmer to your dealer for inspection.
Idle Adjustment Screw
Figure 10
Stopping the Engine
Ignition OFF
Ignition
Switch
DH2510
Ignition OFF
Ignition
Switch
HT2510
Figure 11
1.Cool the engine by allowing it to idle for
2.Move the ignition switch to the “O” or STOP position. See Figure 11.
