Troy-Bilt TB22 EC manual 3

	KNOW YOUR UNIT
APPLICATIONS
As a trimmer:	Spark Plug
• Cutting grass and light weeds.	Muffler
• Edging
• Decorative trimming around trees,	Starter Rope Grip
fences, etc.		Choke Lever
NO ASSEMBLY TOOLS REQUIRED
	On/Off Control
	Air Filter	Fuel Cap
	Cover
	Shaft Grip

Throttle Control

D-Handle

Primer Bulb

EZ-Link™

Shaft Housing

Cutting Head Shield

Line Cutting

Blade

Cutting Head

ASSEMBLY INSTRUCTIONS

		OIL AND FUEL INFORMATION
•	Always agitate the fuel mix before fueling the unit
•	Drain the tank and run the engine dry before storing the unit
USING FUEL ADDITIVES
		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	UNLEADED GAS	2 CYCLE OIL
		severely damage the engine.	1 GALLON US	3.2 FL. OZ.
The bottle of 2-cycle oil contains a fuel additive which will help inhibit corrosion and			(3.8 LITERS)	(95 ml)
			1 LITER	25 ml
minimize the formation of gum deposits. It is recommended to use our 2-cycle oil
			MIXING RATIO - 40:1
with this unit.
If unavailable, use a good 2-cycle oil designed for air-cooled engines along with a fuel additive, such as STA-BIL Gas
Stabilizer or an equivalent. Add 0.8 oz. (23 ml) of fuel additive per gallon of fuel according to the instructions on the
container. NEVER add fuel additives directly to the unit’s fuel tank.
Thoroughly mix the proper ratio of 2-cycle engine oil with unleaded fuel in a separate fuel can. Use a 40:1 fuel/oil ratio.
Do not mix them directly in the engine fuel tank. See the table for specific gas and oil mixing ratios.
NOTE: One gallon (3.8 liters) of unleaded fuel mixed with one 3.2 oz. (95 ml) bottle of 2-cycle oil makes a 40:1 fuel/oil ratio.
NOTE: Dispose of the old fuel/oil mix in accordance to federal, state and local regulations.

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.

FUELING THE UNIT

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.

1.Turn unit on its side, with the fuel cap facing up, and remove the fuel cap.

2.Place the gas container’s spout into the fill hole on the fuel tank and fill the tank. NOTE: Do not overfill the tank.

3.Wipe up any gasoline that may have spilled.

4.Reinstall the fuel cap.

5.Move the unit at least 30 ft. (9.1 m) from the fueling source and site before starting the engine.

STARTING AND STOPPING INSTRUCTIONS

WARNING: Operate this unit in a well-ventilated outdoor area.	OFF (O)
Carbon monoxide exhaust fumes can be lethal in a confined area.		ON (I)
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.
		Throttle
STARTING INSTRUCTIONS		Control
1. Mix fuel with oil. Fill fuel tank with fuel/oil mixture. See Oil and Fuel Mixing		Fig. 7
Instructions.	Choke Lever	Primer Bulb

INSTALL CUTTING ATTACHMENT SHIELD

WARNING: To prevent serious personal injury, never operate the trimmer without the cutting attachment shield in place.

Use the following instructions if the cutting attachment shield on the unit is not installed. Use only the instructions that apply to the type of shaft and shield that the unit is equipped with.

1.	Place the cutting attachment shield onto the shaft	Cutting	Mount			Washer
	housing. Be sure the guard mounting bracket slides	Shield	Bracket
	into the slot on the edge of the cutting shield. Rotate
	the shield into place, counterclockwise (Fig. 1). The
	holes in the guard mounting bracket and cutting
	attachment shield will line up.
2.	From inside the cutting attachment shield, push					Wing
	the square bolt through the hole until the					Nut
				Square Bolt
	threaded end protrudes through the guard
			Fig. 1		Fig. 2
	mounting bracket (Fig. 2).
3.	Put the washer on the bolt, then screw the wing nut onto the bolt and tighten.			Shaft Grip	Shaft	D-Handle
INSTALL AND ADJUST THE D-HANDLE					Housing
1.	Push the D-handle down onto the shaft housing (Fig. 3). The hex bolt hole in the					Tighten

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. 7).

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. 8). 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. 8).

5.Crouch in the starting position (Fig. 9). Squeeze the throttle control lever. Pull the starter rope 5 times.

6.Place the choke lever in Position 2 (Fig. 8)

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. 8) 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. 8) and continue warm-up.

Fig. 8

Starting Position

Starter

Rope

Fig. 9

	handle should be on the left side.
2.	Insert the the bolt into the hex hole in the handle and push through. Place the	Minimum	Wing
			Nut
	washer on the bolt, then screw the wing nut onto the bolt. Do not tighten until	6 inches
			Washer
	making the handle adjustment.	(15.24 cm)
3.	Rotate the D-handle to place the grip above the top of the shaft housing. Place it	Bolt
	a minimum of 6 inches (15.24 cm) from the end of the shaft grip.		Fig. 3

4.While holding the unit in the operating position (Fig. 10), move the D-handle to the location that provides the best grip.

5.Tighten the wing nut until the D-handle is secure.

OPERATING THE EZ-LINK™ SYSTEM

The EZ-Link™ system enables the use of these optional Add-Ons.

Trimmer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AF720 Hedge Trimmer*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AH720* Brushcutter* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BC720* Cultivator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GC720 Edger*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LE720* Pole Saw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PS720 Straight Shaft Trimmer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SS725 Turbo Blower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TB720

*Do NOT use this Add-On with an electric powered unit.

REMOVING THE ADD-ON

1.Turn the knob counterclockwise to loosen (Fig. 6).

2.Press and hold the release button (Fig. 4).

3.While firmly holding the upper shaft housing, pull the lower shaft housing straight out of the EZ-Link™ coupler (Fig. 5).

INSTALLING THE ADD-ON			EZ-Link™ Coupler	Release	Primary Hole
NOTE:		To make installing or removing the add-		Button
		on easier, place the unit on the ground
		or on a work bench.
1.	Turn knob counterclockwise to loosen (Fig. 6).
2.	While firmly holding the add-on, push it straight
	into the EZ-Link™ coupler (Fig. 5).				Upper Shaft	Lower Shaft
NOTE:		Aligning the release button with the guide
				Guide Recess	Housing	Housing
		recess will help installation (Fig. 4).	Fig. 4		Fig. 5
3.	Turn the knob clockwise to tighten (Fig. 6).				90˚ Edging Hole
For decorative trimming/edging with the line cutting head, lock the release button					(Trimmer Only)
into the 90° hole (Fig. 6).

Knob

Fig. 6

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.

DEFINITION OF BLENDED FUELS

WARNING: It has been proven that fuel containing greater than 10% ethanol will likely damage this engine and void the warranty.

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

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. 7).

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. 7).

3.Fully press and release the primer bulb 10 times, slowly. Some amount of fuel should be visible in the primer bulb (Fig. 8). 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. 8).

5.Crouch in the starting position (Fig. 9). 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. 8).

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. 8) 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. 8) 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. 7).

OPERATING INSTRUCTIONS

HOLDING THE UNIT

WARNING: Always wear eye, hearing, foot and body protection to reduce the risk of injury when operating this unit.

Before operating the unit, stand in the operating position (Fig. 10). Check for the following:

• The operator is wearing eye protection and proper clothing

• With a slightly-bent right arm, the operator’s hand is holding the shaft grip

• The operator’s left arm is straight, the left hand holding the D-handle

Fig. 10

•The unit is at waist level

•The cutting head is parallel to the ground and easily contacts the grass without the need to bend over

ADJUSTING TRIMMING LINE LENGTH

WARNING: Do not remove or alter the line cutting blade assembly. Excessive line length will cause premature engine failure and / or unit damage.

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