Maintenance And Repair Instructions - Troy-Bilt TB525ET Manual Del Operador

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.
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.
FREQUENCY
Before starting engine
Every 10 hours
1st change at 10 hours
2nd change at 25 hours
Every 25 hours after
10 hours on new engine
Every 25 hours
Every 25 hours
LINE INSTALLATION FOR THE SPEEDSPOOL
WARNING:
Never use metal-reinforced line,
wire, chain or rope. These can break off and
become dangerous projectiles.
Always use original equipment manufacturer 0.095 inch
(2.41 mm) replacement line. Line other than the specified may
make the engine overheat or fail.
There are two methods to replace the SpeedSpool
line:
• Wind the inner reel with new line
• Install a pre-wound inner reel
WINDING THE INNER REEL WITH NEW LINE
NOTE: It Is unnecessary to remove the bump knob to install a
new trimming line.
1. Cut two pieces of 0.095 inch (2.41 mm) trimming line, 10
feet (3 m) long.
2. Hold the outer spool and turn the inner reel
counterclockwise to line up the arrows on the outer spool
and inner reel (Fig. 21).
3. Pull old line out of the line loading and line locking holes
(Fig. 22 and 23).
Top View Of The SpeedSpool®
Outer Spool
Inner Reel

MAINTENANCE AND REPAIR INSTRUCTIONS

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
®
®
trimming
Arrows
Bump Knob
Fig. 21
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.
WARNING:
when installing trimming line on the unit. The line
may not release properly if the line is too long.
4. Insert a piece of trimming line straight into one of the two
eyelets in the outer spool. Push it up through the line
loading hole in the inner reel (Fig. 22). Do not bend the line
when inserting it into the eyelet.
Trimming Line
Eyelet
Line Loading Hole
5. Insert the line into the locking hole (Fig. 23). Do not push
the line more than a 1/2 inch (12.7 mm) into the line
locking hole. The line will form a small loop (Fig. 23) when
it is inserted correctly.
11
Always use the correct line length
Fig. 22
Line Locking Hole
Fig. 23
SEE
p. 5
p. 13
p. 13
p. 13
p. 13
p. 16
p. 15
p. 15
p. 16