Maintenance And Repair Instructions - Cub Cadet ST2020 Manual Del Operador

MAINTENANCE SCHEDULE
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.
Perform these required maintenance procedures at the frequency stated in
the table. These procedures should also be a part of any seasonal tune-up.
FREQUENCY
Before starting engine
Every 10 hours
Every 25 hours
LINE INSTALLATION
This section covers both SplitLine™ and standard single line installation.
Always use original equipment manufacturer 0.095 in. (2.41 mm)
replacement line. Other types of line 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
counterclockwise (Fig. 15). 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. 16).
3. Remove the spring from the inner reel (Fig. 16).
4. Use a clean cloth to clean 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. 17).
If necessary, remove burrs or replace the reel and spool.
10

MAINTENANCE AND REPAIR INSTRUCTIONS

MAINTENANCE REQUIRED
Fill fuel tank with fresh fuel*
Clean and re-oil air filter
Check spark plug condition and gap
Bolt
Bump Knob
Fig. 15
Outer Spool
Spring
Inner Reel
Fig. 16
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.
NOTE: Please read the California/EPA statement that came with the unit for
a complete listing of terms and coverage for the emissions control
devices, such as the spark arrestor, muffler, carburetor, etc.
Indexing Teeth
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 18 to identify the inner reel you have.
For Use with
Single Line ONLY
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.
REFER TO
p. 7
p. 12
p. 13
Fig. 17
For Use with SplitLine™
or Single Line
Slotted
Holes
Fig. 18