Installinga Prewound Reel; Air Filter Maintenance - Troy-Bilt TB90BC Operator's Manual

INSTALLING A PREWOUND REEL
1. Hold the outer spool with one hand and unscrew the
bump knob clockwise (Fig. 27). 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. 27).
3. Remove the spring from the old inner reel
(Fig. 27).
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. 35).
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 counterclockwise. Tighten securely.
Replacement Parts
See Accessories / Replacement Parts.
AIR FILTER MAINTENANCE
Removing the Air Filter/Muffler Cover
I A I WARNING: TO avoid serious personal injury, I
"" I always turn your trimmer off and allow i[ to
I cool before you clean or service it.
1. Remove the four (4) screws securing the air
filter/muffler cover (Fig. 36). Use a flat blade or
T20 Torx bit screwdriver.
2 Pull the cover from the engine. Do not force.
Screws
EZ-StartT_
Lever
_ rm
L I I I
L I I I
I I I /
Fig. 36
Screws
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 the
air filter will VOID the warranty.
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. 37).
3. Wash the filter in detergent and water (Fig. 38). 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. 39).
5. Squeeze the filter to spread and remove excess oil
(Fig. 40).
/
Air Filter
\
V II II II II
/ Inside Muffler
Cover
Fig. 38
Fig. 37
Fig. 39 Fig. 40
6. Replace the air filter inside the air filter/muffler cover
(Fig. 37).
NOTE: Operating the unit without the air filter and air
filter/muffler cover assembly will VOID the
warranty.
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