Operating Guide

ALL POWER™ WP300 WATER PUMP | 19
SPARK PLUG SERVICE (cont’d)
6. After the spark plug seats, tighten with a
 13/16”sparkplugwrenchtocompressthe
sealing washer.
If re-installing the used spark plug, tighten
1/8 - 1/4 turn after the spark plug seats.
If installing a new spark plug, tighten 1/2
turn after the spark plug seats.
NOTE: A loose spark plug can overheat
and damage the engine. Over-tightening
the spark plug can damage the threads
in the cylinder head.
7. Attach the spark plug cap.
IDLE SPEED ADJUSTMENT
1. Start the engine outdoors and allow it to
warm up to operating temperature.
2. Move the throttle lever to its slowest
position.
3. Turn the throttle stop screw to obtain the
standard idle speed.
Standard Idle Speed:
1,400 (+200/-150) RPM
STORING THE PUMP
Storage Preparation
Proper storage preparation is essential for
keeping your engine trouble-free and looking
good. The following steps will help to keep
rust and corrosion from impairing your pump’s
function and appearance, and will make the
pump easier to start after storage.
Cleaning
1. If the engine has been running, allow it
to cool for at least half an hour before
cleaning.
2. Wash the engine and pump.
Wash the engine by hand and be careful
to prevent water from entering the air
 cleanerormuferopening.Keepwater
away from controls and all other places that
 aredifculttodry,aswaterpromotesrust.
NOTE: Using a garden hose or pressure
washing equipment can force water into
 theaircleanerormuferopening.Water
 intheaircleanerwillsoaktheairlter
and water that passes through the
 airlterormufercanenterthe
cylinder, causing damage.
OWNER’S MANUAL | MAINTENANCE 19
0.028-0.031 in
(0.70-0.80 mm)