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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
Note: It's necessary to remove the swivel ring before
detouch the cylinder cover.
1. Press up the bottom of the swivel ring to remove the
swivel ring. Note: Take care of falling the swivel ring in
the engine when remove the swivel ring.
2. Rotate the carburetor throttle cam and slip out the throttle
cable tab from the slot in the slotted fitting.
3. Loosen the screw. Turn up the hook, then pull out the
throttle cable housing from the guide.
4. 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.
5. Remove three screws and lift off the cylinder cover.
6. Clean all dirt and debris from the cooling fins and
from around the cylinder base.
7. After cleaning, reinstall the cylinder cover and
the high tention lead boot. Then reinstall the throttle
wire, hook, throttle cable end and swivel ring in order.
Spark Plug
Maintenance Interval
・
The spark plug should be removed from the engine and checked after each 25 hours of operation.
・
Replace the spark plug after every 100 hours of operation.
Spark Plug Maintenance
1. 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.
2. Remove the spark plug.
Screw
Three Screws
Cylinder Cover
High Tension
Lead Boot
Throttle Cable
Housing
Guide
Hook
Swivel Ring
Throttle Cable
Throttle
Cable Tab
Carburetor
Throttle Cam
Throttle Cable
Housing
