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WARNING: To prevent serious injury, never
perform maintenance or repairs with unit running.
Always service and repair a cool unit. Disconnect the
spark plug wire to ensure that the unit cannot start.
FREQUENCY MAINTENANCE REQUIRED SEE
Before starting engine
Fill fuel tank with fresh fuel
Check oil
p. 6
p. 12
Every 10 hours Clean and re-oil air filter p. 12
1st change at 10 hours
2nd change at 25 hours
Every 25 hours after
Change oil
Change oil
Clean spark arrestor
p. 12
p. 12
p. 15
10 hours on new engine
Every 25 hours
Every 25 hours
Check rocker arm to valve clearance and adjust
Check rocker arm to valve clearance and adjust
Check spark plug condition and gap
p. 13
p. 13
p. 14
MAINTENANCE AND REPAIR INSTRUCTIONS
MAINTENANCE SCHEDULE
Perform these required maintenance procedures at the
frequency stated in the table. These procedures should also be
a part of any seasonal tune-up.
NOTE: Some maintenance procedures may require special
tools or skills. If you are unsure about these procedures
take your unit to any non-road engine repair
establishment, individual or authorized service dealer.
SPEEDSPOOL
®
LINE INSTALLATION
Always use original equipment manufacturer 0.095 inch
(2.41 mm) replacement line. Lines other than those specified
may make the engine overheat or fail.
There are two methods to replace the SpeedSpool® trimming
line:
• Wind the inner reel with new line
• Install a pre-wound inner reel
Winding the Inner Reel With New Line
NOTE: It Is unnecessary to remove the bump knob to install a
new trimming
line.
1. Cut two pieces of
0.095 inch
(2.41 mm)
trimming line, 10
feet (3 m) long.
2. Hold the outer
spool and turn the
inner reel
counterclockwise
to line up the
arrows on the
outer spool and
inner reel (Fig. 20).
3. Pull old line out of the line
loading and line locking holes
(Fig. 22 and 23).
4. Insert a piece of trimming line
straight into one of the two
eyelets in the outer spool.
Push it up through the line
loading hole in the inner reel
(Fig. 21). Do not bend the line
when inserting it into the
eyelet.
5. Insert the line into the locking
hole (Fig. 22). Do not push
the line more than a 1/2 inch
(12.7 mm) into the line locking hole. The line will form a
small loop (Fig. 22) when it is inserted correctly.
6. Pull the line from the outer spool until the line is tight against
the inner reel (Fig. 23).
7. Repeat procedures 4-6 with the second piece of line.
8. Hold the outer spool. Wind the inner reel counterclockwise
until approximately four (4) inches (102 mm) of line remain
(Fig. 24).
Fig. 23
WARNING: Always use the correct line length
when installing trimming line on the unit. The line
may not release properly if the line is too long.
Top View Of The SpeedSpool®
Outer Spool
Inner Reel
Bump Knob
Arrows
Fig. 20
Trimming
Line
Line Loading Hole
Eyelet
Fig. 21
Line Locking Hole
Fig. 22
NOTE: Maintenance, replacement, or repair of the emission
control devices and system may be performed by any
non-road engine repair establishment, individual or
authorized service dealer.
In order to assure peak performance of your engine, inspection
of the engine exhaust port may be necessary after 50 hours of
operation. If you notice lost RPM, poor performance or general
lack of acceleration, this service may be required. If you feel
your engine is in need of this inspection, refer service to any
non-road engine repair establishment, individual or authorized
service dealer for repair. DO NOT attempt to perform this
process yourself as engine damage may result from
contaminants involved in the cleaning process for the port.
WARNING: Never use metal-reinforced line, wire,
chain or rope. These can break off and become
dangerous projectiles.