REMOVE THE CUTTING BLADE AND INSTALL THE CUTTING ATTACHMENT
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. 7).
2. Hold the locking rod in place by grasping it next to the boom of the unit (Fig. 8).
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. 11).
4. Remove the nut, blade retainer and blade (Fig. 10). Store the nut and blade together for future use
in a secure place. Store out of children’s reach.
Install the Cutting Attachment
5. Align the shaft bushing hole with the locking rod slot and insert the locking rod into the shaft
bushing hole (Fig. 7). Place the blade retainer on the output shaft with the flat surface against the
output shaft bushing (Fig. 12). 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 (Fig. 12).
6. Remove the locking rod.
7. Install the cutting attachment shield. Refer to Remove and Install the Cutting Attachment Shield.
OPERATING THE EZ-LINK® SYSTEM
The EZ-LINK® system enables the use of these optional Add-Ons:
Mach 4® Trimmer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AF720
Hedge Trimmer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AH720
Brushcutter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BC720*
Blower/ Trimmer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BT720
Blower Vacuum. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BV720
Cultivator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GC720
Edger. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LE720
Pole Saw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PS720
Straight Shaft Trimmer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SS725
Snow Thrower. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ST720
Turbo Blower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TB720
*Do NOT use this attachment with an electric powered unit.
Installing the Cutting Attachment or Add-On
NOTE: Place the unit on the ground or on a work bench to
make add-on installation or removal easier.
1. Turn knob counterclockwise to loosen (Fig. 15).
2.
While firmly holding the add-on, push it straight into the EZ-LINK®
coupler (Fig. 14).
NOTE: Aligning the release button with the guide recess will
help installation (Fig. 13).
3. Turn the knob clockwise to tighten (Fig. 15).
For edging (when using the line head cutting attachment with EZ-LINK®
models), lock the release button of the cutting attachment into the 90°
edging hole (Fig. 15).
Removing the Cutting Attachment or Add-On
1. Turn the knob counterclockwise to loosen (Fig. 15).
2. Press and hold the release button (Fig. 13).
3. While firmly holding the upper shaft housing, pull the
cutting attachment or add-on straight out of the EZ-LINK®
coupler (Fig. 14).
OIL AND FUEL INFORMATION
5
STARTING AND STOPPING INSTRUCTIONS
STARTING INSTRUCTIONS
1. Check the oil level in the crankcase. Refer to Checking the
Oil Level.
2. Fill the fuel tank with fresh, clean unleaded gasoline. 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. 20).
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. 21). If you can’t see fuel in the bulb,
press and release the bulb as many times as it takes before
you can see fuel in it.
4. Place the choke lever in Position 1 (Fig. 21).
5. Crouch in the starting position (Fig. 22). Press the throttle
lockout in and squeeze the throttle control lever. Pull the
starter rope 5 times.
6. Place the choke lever in Position 2 (Fig. 21).
7.
While pressing the throttle lockout in and squeezing the throttle
control, pull the starter rope 3 to 5 times to start the 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. 21) 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. 21) and continue warm-up.
IF... the engine does not start, go back to step 3.
IF...
the engine fails to start after a few 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, start the unit with the blue choke lever in Position 2. After the
unit starts, move the choke lever to Position 3.
WARNING: OVERFILLING OIL CRANKCASE MAY CAUSE SERIOUS PERSONAL INJURY.
Check and maintain the proper oil level in the crank case; it is important and cannot be
overemphasized. Check the oil before each use and change it as needed. See Changing the Oil.
RECOMMENDED OIL TYPE
Using the proper type and weight of oil in the crankcase
is extremely important. Check the oil before each use
and change the oil regularly. Failure to use the correct oil, or using
dirty oil, can cause premature engine wear and failure.
Use a high-quality SAE 30 weight oil of API (American Petroleum
Institute) service class SF, SG, SH.
ADDING OIL TO CRANKCASE: INITIAL USE
NOTE: This unit is shipped without oil. In order to avoid
damage to the unit, put oil in the crankcase before
you attempt to start the unit.
Your unit is supplied with one 3.04 fluid oz. (90 ml.) bottle of SAE 30 SF, SG, SH oil (Fig. 16).
NOTE: Save the bottle of oil. It can be used to measure the correct amount during future oil
changes. See Changing the Oil.
1. Unscrew the top of the bottle of oil and remove the paper seal covering the opening. Replace the
top. Next, cut the tip off the funnel spout (Fig. 16).
2. Tip unit so that the back of the engine is facing up in a vertical position.
3. Remove the oil fill plug from the crankcase (Fig. 18).
4. Pour the entire bottle of oil into the oil fill hole (Fig. 17).
NOTE: Never add oil to the fuel or fuel tank.
OIL AND FUEL INFORMATION
5.
Wipe up any oil that may have spilled and reinstall the oil fill plug.
Check oil before each use and change as needed. Refer to
Checking the Oil Level.
RECOMMENDED FUEL TYPE
Old fuel is the primary reason for improper unit performance. Be
sure to use fresh, clean, unleaded gasoline.
NOTE: This is a four cycle engine. In order to avoid damage
to the unit, do not mix oil with gasoline.
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 or form acids when stored. Use fresh fuel (less than 60
days old), when using alcohol-blended fuel.
Using Blended Fuels
If you choose to use a blended fuel, or its use is unavoidable,
follow recommended precautions:
• Always use fresh unleaded gasoline
• Use the fuel additive STA-BIL® or an equivalent
• Drain tank and run the engine dry before storing unit
Using Fuel Additives
The use of fuel additives, such as STA-BIL® Gas Stabilizer or an
equivalent, will inhibit corrosion and minimize the formation of gum deposits. Using a fuel additive can
keep fuel from forming harmful deposits in the carburetor for up to six (6) months. 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 gas tank.
FUELING THE UNIT
1. Remove the fuel cap (Fig. 19).
2. Place the gas container’s spout into the fill hole on the fuel
tank (Fig. 19) 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.
NOTE: Dispose of the old gasoline in accordance to Federal, State and Local regulations.
Funnel
Spout
Fig. 16
Gas Can Spout
Fig. 19
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, well ventilated outdoor area. Wipe up any spilled fuel
immediately. Avoid creating a source of ignition for spilt fuel. Do not start the engine until
fuel vapors dissipate.
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: Operate this unit only 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. 22). To avoid serious injury, the operator and unit must be
in a stable position while starting.
Make sure that any Add-On item is installed correctly and secure before starting the unit.
OFF (O)
ON (I)
Throttle
Control
Fig. 20
Choke Lever
Position 1 Primer Bulb
Fig. 21
Starter
Rope
Starting Position
Throttle
Control
Fig. 22
WARNING: Before beginning to use any attachment, read and understand the manual
that came with the attachment. Follow all safety information contained within.
WARNING: To avoid serious personal injury
and damage to the unit, shut the unit off before
removing or installing add-ons.
CAUTION: Lock the release button in the
primary hole and securely tighten the knob
before operating this unit.
CAUTION: Add-ons are to be used in the
primary hole only. Using the wrong hole could
lead to personal injury or damage to the unit.
Guide Recess
Fig. 13
Release
Button
EZ-LINK® Coupler
Upper Shaft
Housing
Fig. 14
Lower Shaft
Housing
Primary Hole
Knob
Fig. 15
90˚ Edging Hole
(Trimmer Only)
Fig. 18
Oil Fill Plug
O-Ring
Oil Fill Hole
Fig. 17
Fuel Tank Fuel Cap
ASSEMBLY INSTRUCTIONS
Throttle
Lockout
