CLEANING AND GAPPING SPARK PLUG
1.
Remove and inspect spark plug. If porcelain
cracked or electrodes are pitted, install
new spark plug.
IMPORTANT: DO NOT CLEAN SPARK PLUG IN A MACHINE USING
ABRASIVES.
2.
If spark plug is in good condition, clean plug by scraping or using a wire brush.
Wash with a commercial solvent.
3.
Use a round wire-type feeler gauge to check for a gap of 0.70 to 0.80 mm (0.028
to 0.031 inches.)
4.
Carefully bend outer electrode to adjust gap.
5.
Install spark plug.
Reinstalling used plug: Tighten 1/8 - 1/4 turn after spark plug seats to compress
washer.
Installing new plug: Use NGK BPR6ES
ADJUSTING RPM
1.
Start engine. Allow it to warm to normal operating
temperature.
2.
Move throttle lever to its minimum position.
3.
With engine idling, turn throttle stop screw (A)
to obtain standard idle speed.
NOTE: Standard idle speed is 1800 - 2200
RPM.
NOTE: Idle should be serviced every 300
hours by an authorized dealer. Opera-
tor should adjust only if mechanically
proficient and using proper tools.
Trash Pump Operator's Manual
SERVICE
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