Troy-Bilt TB20DC - Manual (Page 14)

14
MAINTENANCE AND REPAIR INSTRUCTIONS
INSTALLING A PREWOUND 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 old inner reel from the outer spool
(Fig. 16).
3. Remove the spring from the old inner reel
(Fig. 16).
4. Place the spring in the new inner reel.
NOTE: The spring must be assembled on the inner reel
before reassembling the cutting attachment.
5. Insert the ends of the line through the eyelets in the
outer spool (Fig. 23).
6. Place the new inner reel inside the outer spool. Push the
inner reel and outer spool together. While holding the
inner reel and outer spool, grasp the ends and pull firmly
to release the line from the holding slots in the spool.
7. Hold the inner reel in place and install the bump knob
by turning clockwise. Tighten securely.
Cleaning the Air Filter
Clean and re-oil the air filter every 10 hours of operation.
It is an important item to maintain. Failure to maintain
your air filter properly can result in poor performance or
can cause permanent damage to your engine.
1. Remove air filter/muffler cover. Refer to Removing
the Air Filter/Muffler Cover.
2. Turn cover over and look inside to locate the air filter.
Remove the air filter from inside the air filter/muffler
cover (Fig. 25).
3. Wash the filter in detergent and water (Fig. 26). Rinse
the filter thoroughly. Squeeze out excess water. Allow
it to dry completely.
4. Apply enough clean SAE 30 oil to lightly coat the filter
(Fig. 27).
5. Squeeze the filter to spread and remove excess oil
(Fig. 28).
AIR FILTER MAINTENANCE
Removing the Air Filter/Muffler Cover
1. Remove the four (4) screws securing the air
filter/muffler cover (Fig. 24). Use a flat blade or
T20 Torx bit screwdriver.
2. Pull the cover from the engine. Do not force.
Screws Screws
Fig. 24
6. Replace the air filter inside the air filter/muffler cover
(Fig. 25).
NOTE: Operating the unit without the air filter and air
filter/muffler cover assembly will VOID the
warranty.
Reinstalling the Air Filter/Muffler Cover
1. Place the air filter/muffler cover over the back of the
carburetor and muffler. Align the screw holes.
2. Insert the four (4) screws into the holes in the air
filter/muffler cover (Fig. 24) and tighten.
Do not over tighten.
Blue Choke
Lever
Air Filter
Inside Muffler
Cover
To avoid serious
personal injury,
always turn your unit off and allow it to cool
before you clean or service it.
WARNING:
Fig. 25 Fig. 26
Fig. 27 Fig. 28