14
MAINTENANCE & REPAIR INSTRUCTIONS
Check for Loose Fastener Parts
• Bump Head™
• String Guard Screws
After Each Use Clean Unit and Labels
• Clean the unit using a damp cloth with a mild
detergent.
• Wipe off the unit with a clean dry cloth.
• Keep air vents free from debris at all times.
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.
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.
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 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.
FREQUENCY
MAINTENANCE REQUIRED
REFER TO
Before starting engine
Fill fuel tank with fresh fuel
Check oil
Page 9
Page 18
Every 10 hours
Clean and re-oil air filter
Page 17
First change at 10 hours
Every 25 hours thereafter
Every 25 hours
Change oil
Change oil
Clean spark arrestor
Page 18
Page 18
Page 17
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
Page 19
Page 19
Page 21
LINE INSTALLATION
This section covers both membrane line and standard
single line installation.
Always use manufacturer’s 0.095 inch (2.41 mm)
replacement line. Line other than the specified may
cause the engine to overheat or fail.
WARNING:
To prevent serious personal
injury, never use metal-reinforced line, wire
or rope. These can break off and become
dangerous projectiles.
There are two ways to replace the trimming line:
• Wind the inner reel with new line
• Install a prewound inner reel
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