7
bottom of the air box cover into the latch at the bottom
of the air box base; push the air box cover up until it
latches securely in place.
NOTE:
The air filter should be replaced annually for the
best performance.
REPLACING THE SPARK PLUG
This engine uses a CHAMPION RCJ6Y spark plug. Use
an exact replacement and replace annually. Follow these
steps to replace the spark plug.
■
Stop the engine.
■
Remove the spark plug boot.
■
Loosen the spark plug by turning it counterclockwise
with a combination wrench.
■
Remove the spark plug.
■
Hand thread the new spark plug, turning it clockwise.
■
Tighten with a combination wrench to 22~25 Nm
torque or one half of a turn from finger tight. Do not
overtighten.
WARNING
Be careful not to cross-thread the spark plug. Cross-
threading will seriously damage the engine.
CLEANING THE EXHAUST HOLE OF THE CYLINDER
AND INTAKE HOLE OF THE MUFFLER
Always stop the engine and allow it to cool down before
cleaning the exhaust hole.
■
Make sure the product is in the “off” position.
■
Remove the screws on the top and rear portions of the
housing counterclockwise.
■
Remove the rear housing from the engine.
■
Remove the muffler screws counterclockwise, and then
remove the muffler cover and , muffler and gasket from
the cylinder.
■
Use the brush to clean the exhaust hole of the cylinder
and intake hole of the muffler.
■
Replace the gasket, muffler and muffler cover. Replace
the screws and then tighten it clockwise.
■
Replace the rear housing. Replace the screws, and
then tighten it clockwise.
WARNING
Always stop the engine and allow it to cool down before
cleaning the exhaust hole.
REPLACING THE STRING HEAD
■
Turn off the product.
■
Align the spanner along the flat side of arbor flange
washer.
■
Turn counterclockwise to remove the old string head.
■
Install the new string head, align the nut in the string
head to the connector shaft of lower boom.
■
Turn the string head clockwise by hand to tighten,
recommended torque is 6 N.M.
WARNING
Always stop the engine and remove the spark plug
wire before making any adjustments such as changing
cutting heads; this is to reduce the risk of serious
personal injury.
REPLACING THE LINE
■
Ensure the product is in “STOP” position.
■
Use a 2.4 mm diameter monofilament string.
■
Cut one piece of string approximately 5.4 m in length.
■
Rotate the bump knob clockwise as necessary to align
the arrows on the bump knob with the arrows on the
lower housing of string head.
■
Insert one end of the string into the eyelet located on
the side of the string head and push until string comes
out through eyelet on the other side.
■
Continue to push string through the string head until
the middle section of the string is inside the string head
and string outside the string head is evenly divided on
each side.
■
Rotate the knob on the string head clockwise to wind
the line.
■
Wind the string until approximately 20 cm remains
protruding from the string head.