Maintenance And Repair Instructions; Line Installation - Troy-Bilt TB490BC Manual Del Operador

MAINTENANCE AND REPAIR INSTRUCTIONS

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.
FREQUENCY
Before starting engine
Every 10 hours
First change at 10 hours
Every 25 hours thereafter
Every 25 hours
10 hours on new engine
Every 25 hours
Every 25 hours

LINE INSTALLATION

This section covers both SplitLine™ and standard single
line installation.
Always use Genuine Factory Parts™ 0.105 in. (2.66 mm)
replacement line. Line other than the 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 (Fig. 32). Inspect the bolt inside
the bump knob to make sure it moves freely. Replace
the bump knob if damaged.
Outer Spool
Spring
Inner Reel
Bump Knob
16
MAINTENANCE REQUIRED
Fill fuel tank with fresh fuel
Check oil
Clean and re-oil air filter
Change oil
Change oil
Clean spark arrestor
Check rocker arm to valve clearance and adjust
Check rocker arm to valve clearance and adjust
Check spark plug condition and gap
Bolt
Fig. 32
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.
WARNING: To prevent serious injury, never
perform maintenance or repairs with the unit
running. Always service and repair a cool unit.
Disconnect the spark plug wire to ensure that
the unit cannot start.
2. Remove the inner reel from the outer spool (Fig. 32).
3. Remove spring from the inner reel (Fig. 32).
4. Use a clean cloth to clean the the inner reel, spring,
shaft and inner surface of the outer spool (Fig. 33).
5. Check the indexing teeth on the inner reel and outer
spool for wear (Fig. 34). If necessary, remove burrs or
replace the reel and spool.
Indexing Teeth
REFER TO
Page 11
Page 18
Page 20
Page 19
Page 19
Page 23
Page 22
Page 22
Page 23
Fig. 33
Fig. 34