Filter
Top Products
8
Adjusting Engine Idle
Idle Speed Adjustment
Place the unit on the ground and start
the engine, and then set throttle control
lever to idle postion. Allow engine to
idle 2-3 minutes until warm.
If a tachometer is available, the engine idle
speed should be adjusted to 3,000 (±300)
RPM (min
-1
).
1.
2.
IMPORTANT
A clean and unrestricted airflow is essen-
tial to your pump’s engine performance
and durability! Before attempting any car-
buretor adjustments, inspect and clean the
engine air filter as described in the Main-
tenance section of this manual.
NOTE
Carburetor fuel mixture adjustments are
preset at factory and cannot be serviced
in the eld.
Starting the Engine (continued)
Starting a ooded engine
Follow the starting procedures for a
warm engine.
If the engine still fails to start or fire,
refer to the troubleshooting chart at the
end of this manual.
5.
6.
CAUTION!
Incorrect spark plug installation can
result in serious engine damage!
Disconnect the spark plug lead, and
then use the spark plug wrench to
unscrew the spark plug (counter- clock-
wise to remove.) See Figure 9
If the spark plug is fouled or is soaked
with fuel, clean or replace the plug as
necessary. For spark plug specificia-
tions and gapping procedure, see the
Maintenance section.
While the spark plug is removed, crank
the engine several times to clear excess
fuel from the combustion chamber.
Replace the spark plug and tighten it firmly
with the spark plug wrench. If a torque
wrench is available, torque the spark plug
to 148-165 inch-lbs. (170-190 kg/cm).
1.
2.
3.
4.
Idle
Adjustment
Screw
Decrease Idle
Increase Idle
Figure 9
Figure 10