Yard Machines 3100M - Manual (Page 9)

9
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 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.
FREQUENCY MAINTENANCE REQUIRED REFER TO
Before starting engine Fill fuel tank with fresh fuel Page 4
Every 10 hours Clean and re-oil air filter Page 11
Every 25 hours
Check and clean spark arrestor
Check spark plug condition and gap Page 11
Page 12
Every 50 hours
Inspect exhaust port and spark arrestor screen for clogging or
obstruction to assure maximum performance levels
Page 11
LINE INSTALLATION
This section covers both SplitLine™ and standard single line
installation.
Always use original equipment manufacturer 0.080 in. (2.03
mm) replacement line. Line other than the specified may make
the engine overheat or fail.
There are two methods to replace the trimming line:
• Wind the inner reel with new line
• Install a prewound inner reel
Winding the Existing Inner Reel
1. Hold the outer spool with one hand and unscrew the Bump
Knob™ counterclockwise (Fig. 12). Inspect the bolt inside
the Bump Knob to make sure it moves freely. Replace the
Bump Knob if damaged.
2. Remove the inner reel from the outer spool (Fig. 13).
3. Remove spring from the inner reel (Fig. 13).
4. Use a clean cloth to clean the the inner reel, spring, shaft,
and inner surface of the outer spool.
5. Check the indexing teeth on the inner reel and outer spool for
wear (Fig. 14). If necessary, remove burrs or replace the reel
and spool.
Bump Knob™
Bolt
Fig. 12
Inner Reel
Spring
Outer Spool
Indexing Teeth
Fig. 14
Fig. 13
MAINTENANCE AND REPAIR INSTRUCTIONS
WARNING: Never use metal-reinforced line,
wire, chain or rope. These can break off and
become dangerous projectiles.
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.
NOTE: SplitLine™ can only be used with the inner reel with the
slotted holes. Single line can be used on either type of
inner reel. Use Figure 15 to identify the inner reel you have.
NOTE: 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.