Maintenance; Maintenance Schedule - Troy-Bilt TB227 XP Manual Del Operador

WARNING:
To avoid serious personal injury, always stop
the engine and allow it to cool before cleaning or maintaining
the unit. Never perform cleaning or maintenance while the
unit is running. Disconnect the spark plug wire to prevent
the unit from starting accidentally.
WARNING:
Wear protective clothing and observe all
safety instructions to prevent serious personal injury.
REPLACING THE TRIMMING LINE (BUMP HEAD)
Only use the trimming line described in the Specifications section.
Other types of trimming line may cause the unit to overheat or fail.
WARNING:
Never use metal-reinforced line, wire, chain or
rope. These can break off and become dangerous projectiles.
NOTE: Always use the correct line length when installing trimming
line. The line may not release properly if the line is too long.
NOTE: The cutting head will remain attached to the unit.
NOTE: DO NOT disassemble the cutting head to install new line.
Installing New Trimming Line
1. If necessary, remove any old trimming line and/or obstructions
from the cutting head. Refer to Removing Old Trimming Line and
Obstructions.
2. Cut two 10-foot (3.0 m) lengths of new trimming line. Cut one
end of each line at a 30 degree angle (Fig. 22).
3. Turn the bump knob to align the arrows on the bump knob with
the arrows on the spool cover (Fig. 21).
4. Insert one of the lines into an eyelet on the cutting head (Fig. 22).
Use the angled end and push the line in about 3 inches (7.5 cm).
Repeat this process with the other line and remaining eyelet.
5. Turn the bump knob to wind the line until about 5 inches (12.5 cm)
protrude from each side of the cutting head (Fig. 23).
NOTE: DO NOT push the bump knob down while winding the line.
The bump knob will only turn one way, depending upon the unit
model.
NOTE: If too little line is left protruding, it could retract inside the
cutting head.

MAINTENANCE

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 the unit to
an MTD authorized service dealer.
NOTE: Maintenance, replacement, or repair of the emission control
devices and system may be performed by an MTD 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.
FREQUENCY
Every 10 hours
After the first
10 hours, at 50
hours, and at
100 hours
Spool Cover
Trimming
Line
15
MAINTENANCE REQUIRED
• Clean and re-oil the air filter. Refer to
Maintaining the Air Filter.
• Check the spark plug condition and gap.
Refer to Maintaining the Spark Plug.
Fig. 21
Eyelet
30º
X
Fig. 22
Bump Knob
Arrows