Know Your Unit; Assembly - Troy-Bilt TB590 EC Operator's Manual

RULES FOR SAFE OPERATION
SYMBOL MEANING
• KEEP BYSTANDERS AWAY
WARNING:
and pets, at least 50 feet (15 m) from the operating area.
• TRIMMER/ BRUSHCUTTER SAFETY
WARNING:
cause severe injury. Keep bystanders, especially
children and pets, at least 50 feet (15 m) away from
the cutting area. The cutting attachment shield must
be used when using the trimmer cutting attachment.
• THROWN OBJECTS AND ROTATING CUTTER CAN
CAUSE SEVERE INJURY
WARNING:
attachment shield in place. Keep away from the
rotating cutting attachment.
• SHARP BLADE
WARNING:
shield. To prevent serious injury, do not touch the line
cutting blade.
• BRUSHCUTTERS• REPLACE DULL BLADE
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.

KNOW YOUR UNIT

APPLICATIONS
As a trimmer:
• Cutting grass and light weeds.
• Edging
• Decorative trimming around trees,
Starter Rope Grip
fences, etc.
As a brushcutter:
• Cutting weeds and light brush of up
to 1/2 inch in diameter.
Throttle Lockout
On/Off Control
Shoulder Strap Loop
J-Handle
Shaft
Brushcutter Blade
Cutting Attachment
ASSEMBLY INSTRUCTIONS
INSTALL AND ADJUST THE J-HANDLE
On some units, the J-handle may be pre-installed. In this case you
must loosen screws and adjust the handle to fit the operator. Go to
step 5 if the J-handle is pre-installed.
]1. Place the J-handle between the top and middle clamp
pieces (Fig. 1).
2. While holding the three pieces together, install the four (4)
screws through the top clamp and into middle clamp.
NOTE: The holes in the top and middle clamp will line up
only when assembled correctly.
3. Place the clamps and the J-handle over the shaft housing
and onto the bottom clamp.
4. Hold each hex nut in the bottom clamp recess with a finger.
Start screws with a large Phillips screwdriver. Do not tighten
until you make the handle adjustment.
5. Slide the J-handle in or out until the arrow/white line on the
decal touches the clamp assembly (Fig. 2). You must first
loosen the screws if the handle is pre-installed.
6. While holding the unit in the operating position (Fig. 23), position
the J-handle to the location that provides you the best grip.
7. Tighten the clamp screws evenly, until the J-handle is secure.
4
Keep all bystanders, especially children
Thrown objects and rotating cutter can
Do not operate without the cutting
Sharp blade on cutting attachment
Oil Fill Plug
Spark Plug
Muffler
Fuel Cap
Shaft Grip
Throttle Control
Air Filter Cover
EZ-LINK®
Cutting Attachment Shield
Line Cutting Blade
Screws
Nuts
Fig. 1
Decal
Fig. 2
INSTALL THE HARNESS
1. Push the strap through the center of the buckle.
2. Pull the strap over the cross bar and down through the slot
in the buckle (Fig. 3).
3. Put the harness on over head and onto shoulder. Snap it on
to the support fitting (Fig. 4).
4. Adjust length to fit the operator's size. Pull tab to lengthen,
pull strap to shorten (Fig 5).
Fig. 4
REMOVE AND INSTALL THE CUTTING ATTACHMENT SHIELD
WARNING:
should NOT be installed when operating the unit
with a blade. Remove the cutting attachment
shield before removing or installing the blade.
Remove the cutting attachment shield when using the unit as
a brushcutter
Remove the cutting attachment shield from the shield mount by
removing the three (3) screws with a flat blade screwdriver (Fig. 6).
Store parts for future use.
WARNING:
never operate the unit as a trimmer without the
cutting attachment shield in place.
Install the cutting attachment shield when using the unit as a
grass trimmer
Install the cutting attachment shield on the shield mount by
inserting the three (3) screws into the shield mount. Tighten
securely with a flat blade screwdriver (Fig. 6).
REMOVE THE CUTTING ATTACHMENT AND INSTALL THE
CUTTING BLADE
NOTE: To make cutting blade removal and installation easier,
place the unit on the ground or on a work bench.
Remove the Cutting Attachment Shield
See Remove and Install the Cutting Attachment Shield.
Remove the Cutting Attachment
DANGER:
Choke Lever
can result in injury to the operator. The housing remains
hot for a short time even after the unit is turned off. Do
not touch the gear housing until it has cooled.
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, remove the cutting
attachment by turning it clockwise off of the output shaft
(Fig. 9). Store the cutting attachment for future use.
Primer Bulb
NOTE: The blade retainer under the cutting attachment will
be used when installing the cutting blade.
Install the Cutting Blade
DANGER:
unit will vibrate and the blade may fly off,
causing possible serious personal injury.
4. Place the cutting blade on the output shaft bushing (Fig. 10).
5. Make sure that the cutting blade is centered on the pilot step
and sitting flat against the output shaft bushing (Fig. 10).
6. Align the shaft bushing hole with the locking rod slot and
insert the locking rod into the bushing hole (Fig. 7).
7. Put the blade retainer and nut on the output shaft (Fig. 10).
Make sure that the blade is installed correctly.
8. Tighten nut counterclockwise against the blade while
holding the locking rod (Fig. 11):
J Handle
• 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
Top Clamp
the shaft bushing. Make sure that the blade is installed
correctly, then rotate the nut an additional 1/4 to 1/2 turn
Middle Clamp
counterclockwise (Fig. 11).
Bottom Clamp 9. Remove the locking rod from the locking rod slot.
WARNING:
damage to the unit, do not start or operate this
unit with the locking rod in the locking rod slot.
WARNING:
Sharpening the blade can cause the blade tip to
break off while in use. This can result in severe
personal injury. Replace the blade.
ASSEMBLY INSTRUCTIONS
Support Fitting
The cutting attachment shield
To prevent serious personal injury,
The gear housing gets hot with use. It
If the cutting blade is off-center, the
To avoid serious personal injury or
Do not sharpen the cutting blade.
Fig. 3
Fig. 5
Cutting Attachment
Screws (3)
Shield
Shield Mount
Fig. 6
Bushing Hole Output Shaft
Bushing
Locking
Rod Slot
Locking
Rod
Fig. 7
Fig. 8
Cutting Attachment
Fig. 9
Blade
Nut
Retainer
Output
Shaft
Pilot Step
Fig. 10
Top View
Tighten
Loosen
Fig. 11
Cutting Attachment
Blade
Bushing
Fig. 12