Troy-Bilt TB26TB User Manual

Page 10

NOTE: It may be necessary to

remove the fuel cap to
completely remove the air filter
cover.

Remove the air filter (Fig. 27).

Wash the filter in detergent and
water (Fig. 28). Rinse the filter
thoroughly and allow it to dry.

Apply enough clean SAE 30
motor oil to lightly coat the filter
(Fig. 29).

Squeeze the filter to spread
and remove excess oil (Fig. 30).

Replace the filter
(Fig. 31).

NOTE: If the unit is

operated without
the air filter, you
will VOID the
warranty.

Reinstall the air
filter cover.
Position the
hooks on the left
side of the air
filter cover into
the slots at the left side of the back plate (Fig. 31).

NOTE: It may be necessary to remove the fuel cap to reinstall

the air filter cover.

Swing the cover to the right until the tab on the air filter
cover snaps into place in the slot on the back plate (Fig. 32).

Replace the fuel cap if it was removed.

Fig. 28

Air Filter

Air Filter Cover

Tab

Fig. 27

Fig. 29

Fig. 30

Fig. 31

Back Plate Slot

Slots

Back Plate

MAINTENANCE AND REPAIR INSTRUCTIONS

CARBURETOR ADJUSTMENT

The idle speed of the engine is adjustable. An idle adjustment
screw is reached though a hole in the top of the engine cover
(Fig. 33).

NOTE: Careless

adjustments can
seriously damage your
unit. An authorized
service dealer should
make carburetor
adjustments.

Check Fuel

Old fuel is usually the
reason for improper unit
performance. Drain and
refill the tank with fresh fuel
prior to making any adjustments. Refer to Oil and Fuel
Information (p. 5).

Clean Air Filter

The condition of the air filter is important to the operation of the
unit. A dirty air filter will restrict air flow. This is often mistaken
for an out of adjustment carburetor. Check the condition of the
air filter before adjusting the idle speed screw. Refer to Air
Filter Maintenance (p. 9).

Adjust Idle Speed Screw

If, after checking the fuel and cleaning the air filter, the engine
still will not idle, adjust the idle speed screw as follows:

Start the engine and let it run at a high idle for a minute to
warm up. Refer to Starting/Stopping Instructions (p. 6).

Release the throttle trigger and let the engine idle. If the
engine stops, insert a small phillips into the hole in the air
filter/muffler cover (Fig. 33). Turn the idle speed screw in,
clockwise, 1/8 of a turn at a time (as needed) until the engine
idles smoothly.

NOTE: The cutting attachment should not rotate when the

engine idles.

If the cutting attachment rotates when the engine idles, turn
the idle speed screw counterclockwise 1/8 of a turn at a
time (as needed), to reduce idle speed.

WARNING:

The cutting attachment may spin during

idle speed adjustments. Wear protective clothing and
observe all safety instructions to prevent serious
personal injury.

WARNING:

To prevent serious personal injury,

make sure the cutting attachment has stopped
rotating before you turn it off and set it down.

Idle Adjustment Screw

Fig. 33

Air Filter

Cover

Tab

Fig. 32