Oil And Fuel Information; Starting And Stopping Instructions - Troy-Bilt TB42 BC Manual Del Operador

ASSEMBLY INSTRUCTIONS
Install the Cutting Blade
WARNING:
To avoid serious personal injury, always wear gloves while handling or installing the
blade.
1. Place the cutting blade on the output shaft
bushing (Fig. 13).
WARNING:
If the cutting blade is off-
center, the unit will vibrate and the blade
may fly off, causing possible serious
personal injury.
2. Make sure that the cutting blade is centered on
the pilot step and sitting flat against the output
shaft bushing (Fig. 14).
3. Align the shaft bushing hole with the locking
rod slot and insert the locking rod into the
bushing hole (Fig. 10).
4. Put the blade retainer and nut on the output
shaft. Make sure that the blade is installed
correctly.
5. Tighten nut counterclockwise against the blade
while holding the locking rod:
• If using a torque wrench and a 13 mm socket
tighten to: 325 - 335 in•lb, 27 - 28 ft.•lb, 37 -
38 N•m.
• Without a torque wrench, use a 13 mm closed-
end or socket wrench, turning the nut until the
blade retainer is snug against the shaft
bushing. Make sure that the blade is installed
correctly, then rotate the nut an additional 1/4
to 1/2 turn counterclockwise (Fig. 15).
6. Remove the locking rod from the locking rod
slot.
WARNING:
To avoid serious personal injury or damage to the unit, do not start or operate this unit with the
locking rod in the locking rod slot.
WARNING:
Do not sharpen the cutting blade. Sharpening the blade can cause the blade tip to break off
while in use. This can result in severe personal injury. Replace the blade.
REMOVE THE CUTTING BLADE AND INSTALL THE CUTTING ATTACHMENT
WARNING:
To avoid serious personal injury, always wear gloves while handling or installing the
blade.
Remove the Cutting Blade
1. Align the shaft bushing hole with the locking rod slot and insert the locking rod into the bushing
hole (Fig. 10).
2. Hold the locking rod in place by grasping it next to the boom of the unit (Fig. 11).
3. While holding the locking rod, loosen the nut on the blade by turning it clockwise with a 13 mm
closed- end or socket wrench (Fig. 16).
4. Remove the nut, blade
retainer and blade. Store the
nut and blade together for
future use in a secure place.
Store out of children's reach.
Install the Cutting Attachment
1. Align the shaft bushing hole
with the locking rod slot and
insert the locking rod into the
shaft bushing hole (Fig. 10).
Place the blade retainer on
the output shaft with the flat
surface against the output
shaft bushing (Fig. 17). Screw
the cutting attachment counterclockwise
onto the output shaft. Tighten securely.
NOTE: The blade retainer must be installed on
the output shaft in the position shown for the
cutting attachment to work correctly.
2. Remove the locking rod.
3. Install the cutting attachment shield. Refer to
Remove and Install the Cutting Attachment
Shield.
WARNING:
To avoid serious personal injury, the cutting attachment shield MUST be in place at all
times while operating the unit as a trimmer.

OIL AND FUEL INFORMATION

OIL AND FUEL MIXING INSTRUCTIONS
Old and/or improperly mixed fuel are the main reasons for the unit not running properly. Be sure to use
fresh, clean unleaded fuel. Follow the instructions carefully for the proper fuel/oil mixture.
WARNING:
It has been proven that fuel containing greater than 10% ethanol will likely damage this engine
and void the warranty.
DEFINITION OF BLENDED FUELS
Today's fuels are often a blend of gasoline and oxygenates such as ethanol, methanol, or MTBE (ether).
Alcohol-blended fuel absorbs water. As little as 1% water in the fuel can make fuel and oil separate. It
forms acids when stored. When using alcohol-blended fuel, use fresh fuel (less than 30 days old).
USING BLENDED FUELS
If choosing to use a blended fuel, or its use is unavoidable, follow recommended precautions:
• Always use the fresh fuel mix explained in the operator's manual
• Use the fuel additive STA-BIL® or an equivalent
4
Nut
Blade Retainer
Cutting Blade
Pilot Hole
Shield Mount
Output Shaft
Bushing
Locking Rod
Fig. 13
Pilot Hole
Fig. 14
1/4 - 1/2 turn Counterclockwise
Fig. 15
Clockwise
Fig. 16
Cutting Attachment
Blade Retainer
Output Shaft Bushing
Locking Rod
Fig. 17
CAUTION:
For proper engine operation and maximum
reliability, pay strict attention to the oil and fuel mixing instructions
on the 2-cycle oil container. Using improperly mixed fuel can
severely damage the engine.
WARNING:
Gasoline is extremely flammable. Ignited vapors may explode. Always stop the engine
and allow it to cool before filling the fuel tank. Do not smoke while filling the tank. Keep sparks and open
flames at a distance from the area.
WARNING:
Remove fuel cap slowly to avoid injury from fuel spray. Never operate the unit without the
fuel cap securely in place.
WARNING:
Add fuel in a clean, level and well ventilated outdoor area. Wipe up any spilled fuel immediately.
Avoid creating a source of ignition for spilled fuel. Do not start the engine until fuel vapors dissipate.

STARTING AND STOPPING INSTRUCTIONS

WARNING:
Operate this unit in a well-ventilated outdoor area.
Carbon monoxide exhaust fumes can be lethal in a confined area.
WARNING:
Avoid accidental starting. Make sure you are in the
starting position when pulling the starter rope (Fig. 9). To avoid serious
injury, the operator and unit must be in a stable position while starting.
STARTING INSTRUCTIONS
1. Mix fuel with oil. Fill fuel tank with fuel/oil mixture. See Oil and Fuel
Mixing Instructions.
2. Fill the fuel tank with fresh, clean fuel mix. Refer to Fueling the Unit.
NOTE: There is no need to turn the unit on. The On/Off Control is in the
ON ( I ) position at all times (Fig. 18).
3. Fully press and release the primer bulb 10 times, slowly. Some amount
of fuel should be visible in the primer bulb and fuel lines (Fig. 19). If fuel
can not be seen in the bulb, press and release the bulb until fuel is
visible.
4. Place the choke lever in Position 1 (Fig. 19).
5. Crouch in the starting position (Fig. 20). Squeeze the throttle control
lever. Pull the starter rope 5 times.
6. Place the choke lever in Position 2 (Fig. 19)
7. Squeeze the throttle control, pull the starter rope in a controlled motion
3 to 5 times to start engine.
8. Keep the throttle squeezed and allow the engine to warm up for 30 to
60 seconds.
9. Continue squeezing the throttle control, move the choke lever to Position
3 (Fig. 19) and continue warming the engine for an additional 60 seconds.
The unit may be used during this time.
NOTE: Unit is properly warmed up when engine accelerates without hesitation.
IF...the engine hesitates, return the choke lever to Position 2 (Fig. 19) and continue warm-up.
IF...the engine does not start, go back to step 3.
IF...the engine fails to start after 2 attempts, place the choke lever in Position 3 and squeeze the throttle
control. Pull
the starter rope out with a controlled and steady motion 3 to 8 times. The engine should start. If not,
repeat.
IF WARM...If the engine is already warm, go back to step 6.
STOPPING INSTRUCTIONS
1. Release the throttle control and allow the engine to cool down by idling.
2. Press and hold the On/Off Control switch in the OFF (O) position until the unit comes to a complete
stop (Fig. 18).
IF USING THE OPTIONAL ELECTRIC STARTER OR POWER START BIT™ ACCESSORY
HOW TO START THE UNIT USING THE ELECTRIC STARTER OR POWER START BIT ACCESSORY.
NOTE: This Unit Can Use an Electric Start or Power Start Bit™ Optional Accessory!
Please refer to the Electric Starter or Power Start Bit operator's manual for proper use of this feature. (Items Sold
Separately! Please refer to page 5 of this manual about purchasing these accessories.)
STARTING INSTRUCTIONS
1. Mix fuel with oil. Fill fuel tank with fuel/oil mixture. See Oil and Fuel Mixing Instructions.
2. Fill the fuel tank with fresh, clean fuel mix. Refer to Fueling the Unit.
NOTE: There is no need to turn the unit on. The On/Off Control is in the ON ( I ) position at all times (Fig. 19).
3. Fully press and release the primer bulb 10 times, slowly. Some amount of fuel should be visible in the primer bulb
(Fig. 19). If fuel cannot be seen in the bulb, press and release the bulb until fuel is visible.
4. Move the choke lever to Position 1 (Fig. 19).
5. Crouch in the starting position (Fig. 20). Place the electric starter or power start bit into the back of the unit. Refer to
the Operation section of the Electric Starter or Power Start Bit operator's manual.
6. Squeeze the throttle control lever. Press and hold the electric starter or drill ON (I) button for 2 seconds.
7. Move the choke lever to Position 2 (Fig. 19).
8. Squeeze the throttle control lever, press and hold the electric starter or drill ON (I) button for 2-second intervals until
the unit starts.
9. Continue to squeeze the throttle control, remove the electric starter or drill from the unit and allow the engine to
warm up for 30 to 60 seconds.
10. Continue squeezing the throttle control, move the choke lever to Position 3 (Fig. 19) and run the unit for an
additional 60 seconds. The unit may be used during this time
NOTE: Unit is properly warmed up when engine accelerates without hesitation.
IF... the engine hesitates, return the choke lever to Position 2 (Fig. 19) and continue warm-up.
IF... the engine does not start, go back to step 3.
IF... the engine fails to start after 2 attempts, place the choke lever in Position 3 and squeeze the throttle control. Press
and hold the electric starter or drill ON (I) button for 2-second intervals until the unit starts.
IF WARM... If the engine is already warm, start the unit with the blue choker lever in Position 2. After the unit starts,
move the blue choker lever to Position 3.
STOPPING INSTRUCTIONS
1. Release the throttle control and allow the engine to cool down by idling.
2. Press and hold the On/Off Control switch in the OFF (O) position until the unit comes to a complete stop (Fig. 19).
UNLEADED GAS 2 CYCLE OIL
1 GALLON US 3.2 FL. OZ.
(3.8 LITERS) (95 ml)
1 LITER 25 ml
MIXING RATIO - 40:1
OFF (O)
ON (I)
Throttle
Control
Fig. 18
Primer Bulb
Choke Lever
Fig. 19
Starting Position
Starter
Rope
Fig. 20