MTD LT31CS - Manual (Page 15)

15
SECTION 5: MAINTAINING YOUR TRIMMER
NOTE: Some maintenance procedures may require
special tools or skills. If you are unsure about
these procedures take your unit to an
authorized service dealer.
MAINTENANCE SCHEDULE
These required maintenance procedures should be
performed at the frequency stated in the table. They
should also be included as part of any seasonal tune-up.
MAINTENANCE REQUIRED
Fill fuel tank with correct oil and fuel mixture
Clean and re-oil air filter
Check and clean spark arrestor
Check spark plug condition and gap
Inspect exhaust port and spark arrestor screen for clogging
or obstruction to assure maximum performance levels
FREQUENCY
Before Starting Engine
Every 10 Hours
Every 25 Hours
Every 50 Hours
REFER TO
Page 11
Page 17
Page 19
Page 18
Page 19
WARNING: To prevent serious injury, perform
maintenance or repairs on a cool unit, never
with the unit running. Disconnect spark plug
wire to ensure the unit will not start.
NOTE: Emission control device and system repair,
maintenance or replacement 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 an authorized servicing dealer, or
establishment 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.
3. Remove spring from the inner reel, Figure 24.
4. Use a clean cloth to wipe the the inner reel, spring,
shaft and inner surface of the outer spool, Figure 25.
5. Check the indexing teeth on the inner reel and outer
spool for wear, Figure 26. If necessary, remove burrs
or replace the reel and spool.
Inner Reel
Spring
Outer Spool
Bump Knob
Bolt
LINE INSTALLATION
This section covers both SplitLine™ and standard single
line installation.
Always use genuine 0.095 in. (2.41 mm) replacement
line. Line other than specified may make the engine
overheat or fail.
WARNING: Never use metal-reinforced line,
wire, chain, or rope. These can break off and
become dangerous projectiles.
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 clockwise, Figure 24 . 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, Figure 24.
Indexing Teeth
FIGURE 26
FIGURE 24
FIGURE 25