— 22 —
Cylinder Cooling Fins
Maintenance Interval
The cylinder cooling fins should be cleaned after every
25 hours of operation, or once a week, whichever
comes first.
Air must flow freely around and through the cylinder
cooling fins to prevent engine overheating. Leaves,
grass, dirt and debris buildup on the fins will increase
the operating temperature of the engine, which can
reduce engine performance and shorten engine life.
Cooling Fin Cleaning
1.
With the engine at ambient (room) temperature,
loosen the knob and remove the air cleaner cover.
2.
Twist the high tension lead boot on the spark plug
back and forth a couple of times to loosen the
boot, then pull the boot off of the spark plug.
3.
Loosen the knob and lift off the cylinder cover.
4.
Clean all dirt and debris from the cooling fins and
from around the cylinder base.
5.
Reinstall the fan cover and the cleaner cover.
Spark Arrester
Maintenance Interval
• The spark arrester should be inspected and
cleaned after every 25 hours of use.
• Replace the screen if it cannot be thoroughly
cleaned, or if it is damaged.
Spark Arrester Maintenance
1.
With the engine at ambient (room) temperature,
Remove the tapping screw, and remove the cover.
2.
Twist the high tension lead boot on the spark plug
back and forth a couple of times to loosen the
boot, then pull the boot off of the spark plug.
3.
Loosen the knob and lift off the cylinder cover.
Air Cleaner Cover
Knob
WARNING
POTENTIAL HAZARD
• Muf fler sur face becomes hot when
Wa t e r P u m p i s i n o p e r a t i o n a n d
remains hot for some time after the
engine is shut of f.
WHAT CAN HAPPEN
• Contact with hot muf fler surfaces could
cause a burn.
HOW TO AVOID THE HAZARD
• Make sure the muf fler is cool before
inspecting and cleaning the spark
arrester.
Socket Head Screw
Tail
Spark Arrester