Yardworks YW50DHP Instruction Manual page 16

Note: The decompression lever (14) will automatically reset.
Note: If motor does not start repeat steps 4 to 6, if the motor still fails to start refer to the trouble shooting
section of the manual (page 18).
7. Once the motor has started move the lockable throttle knob (6) to the center
throttle position (in the middle of the STOP and START position (Fig. 9) and let
the engine idle no load for 3 minutes.
8. The lockable throttle knob (6) can now be adjusted to obtain the desired pressure
at the discharge outlet (2).
Adjusting the Throttle
The throttle is used to regulate the RPM of the engine, which also controls the water
flow out of the discharge outlet (2).
1. To increase the speed of the engine and water flow, loosen the lockable throttle
knob (6) and push down to the START position and re-tighten the lockable throttle
knob (6) (Fig. 10).
2. To decrease the speed of the engine and water flow, loosen the lockable throttle
knob (6) and move the throttle up to the STOP position and re-tighten the lockable throttle knob (6).
Stopping the Engine
1. Decrease the speed of the engine and water flow by moving the throttle up towards the STOP position and allow
idling for 2 minutes.
2. Then move the throttle to the STOP position and rotate the fuel tap (9) to the
anti-clockwise closed/shut "S" position (Fig. 11).
Caution: Suddenly stopping the engine will cause an abnormal increase of temperature
which could result in damage to the engine.
OPERATION (cont.)
15
Fig. 9
Fig. 10
Fig. 11