11
SPARK PLUG MAINTENANCE
See figure 13.
The spark plug must be properly gapped and free of
deposits in order to ensure proper engine operation. To
check:
■ Remove the spark plug boot.
■ Clean any dirt from around base of spark plug.
■ Remove spark plug using a spark plug socket (not
provided).
■ Inspect spark plug for damage, and clean with a wire
brush before reinstalling. If insulator is cracked or
chipped, spark plug should be replaced.
NOTE:
The recommended spark plug models is NGK
BPR6HS. Spark plug can be ordered through the
Bunnings Special orders desk – 30010Z0201200.
(Ryobi part number for Australia and New Zealand).
■ Measure plug gap. The correct gap is 0.028 − 0.031 in.
To widen gap, if necessary, carefully bend the ground
(top) electrode. To lessen gap, gently tap ground
electrode on a hard surface.
■ Seat spark plug in position; thread in by hand to
prevent cross-threading.
■ Tighten with wrench to compress washer. If spark plug
is new, use 1/2 turn to compress washer appropriate
amount. If reusing old spark plug, use 1/8 to 1/4 turn
for proper washer compression.
NOTE:
An improperly tightened spark plug will become
very hot and could damage the engine.
■ Reinstall spark plug boot.
STORING THE MOWER
When storing the mower for 30 days or more:
■ If using fuel stabilizer, follow stabilizer manufacturer’s
directions to add stabilizer to petrol in fuel tank. Run
engine at least 10 minutes after adding stabilizer to
allow the stabilizer to reach the carburettor.
WARNING
Do not store the lawn mower with petrol in the tank
inside a building where fumes may reach an open flame
or spark.
■ If not using fuel stabilizer, allow the engine to run until
the mower is completely out of petrol.
■ Once the engine has stopped, allow the blade to come
to a complete stop and disconnect the spark plug wire.
■ Turn the fuel tap to the closed position.
■ Check all nuts, bolts, knobs, screws, fasteners, etc.,
for tightness.
■ Inspect moving parts for damage, breakage, and wear.
Have repairs made on any damaged or missing parts.
■ Store the mower in a well-ventilated area that is clean,
dry, and out of the reach of children.
■ Do not store near corrosive materials such as fertilizer
or rock salt.
To lower the handle before storing
■ Loosen the starter rope guide knob. Remove starter
rope from guide and allow to retract into engine.
■ Fully loosen the handle knobs on the sides of the
handle and fold the upper handle down.
■ Remove the handle knobs and bolts from each side of
the lower handle at the handle bracket, (mounted on
the mower deck).
■ Push inward on each side of the lower handle, and
lift the sides of the lower handle past the edges of the
handle mounting brackets.
■ Fold the lower handle forward, making sure not to
bend or kink the control cables.
TRANSPORTATION
■ Stop the machine, disconnect the spark plug wire and
wait until the blade comes to a complete stop, and
allow it to cool.
■ Empty the fuel tank by running the engine till it stops.
Empty oil by following instruction for changing oil.
■ Secure the machine against movement or falling to
prevent injury to persons or damage to the machine.
