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

KNOW YOUR UNIT

APPLICATIONS
As a trimmer:
• Cutting grass and light weeds.
• Edging
• Decorative trimming around trees,
fences, etc.
As a brushcutter:
On/Off Control
• Cutting weeds and light brush of up
to 1/2 inch in diameter.
Throttle Control
Throttle Lockout
Bullhorn Handle
Shaft
Cutting Attachment

ASSEMBLY INSTRUCTIONS

INSTALL AND ADJUST THE HANDLE BAR
1. Place the handle bar 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 handle bar 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 bar adjustment.
5. While holding the unit in the operating position
(Fig. 22), position the handle bar to the location
that provides you the best grip.
6. Tighten the clamp screws evenly, until the
handle bar is secure.
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. 2).
3. Put the harness on over head and onto shoulder.
Snap it on to the support fitting (Fig. 3).
4. Adjust length to fit the operator's size. Pull tab to
lengthen, pull strap to shorten (Fig. 4).
4
Spark Plug
Muffler
Starter Rope Grip
Shaft Grip
Shoulder Strap
Loop
Foot Stand
Air Filter Cover
EZ-LINK®
Cutting Attachment Shield
Line Cutting Blade
Brushcutter Blade
Handle Bar
Screws
Middle
Clamp
Bottom
Clamp
Nuts
Fig. 1
Fig. 2
Support Fitting
Fig. 3 Fig. 4
REMOVE AND INSTALL THE CUTTING ATTACHMENT SHIELD
WARNING:
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
Fuel Cap
brushcutter
Oil Fill Plug
Choke Lever
WARNING:
personal injury, never operate the unit as a
trimmer without the cutting attachment
shield in place.
Remove the cutting attachment shield from the shield
mount by removing the three (3) screws with a flat blade
screwdriver (Fig. 5). Store parts for future use.
Primer Bulb
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. 5).
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:
with use. It 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. 6).
2. Hold the locking rod in place by grasping it
next to the boom of the unit (Fig. 7).
3. While holding the locking rod, remove the
cutting attachment by turning it clockwise off
of the output shaft (Fig. 8). Store the cutting
attachment for future use.
NOTE: The blade retainer under the cutting
Top Clamp attachment will be used when installing the
cutting blade.
DANGER:
center, the unit will vibrate and the blade
may fly off, causing possible serious
personal injury.
Install the Cutting Blade
4. Place the cutting blade on the output shaft
bushing (Fig. 9).
5. Make sure that the cutting blade is centered on the pilot step and sitting flat
against the output shaft bushing (Fig. 9).
6. Align the shaft bushing hole with the locking rod slot and insert the locking
rod into the bushing hole (Fig. 6).
7. Put the blade retainer and nut on the output shaft (Fig. 9). Make sure that
the blade is installed correctly.
8. Tighten nut counterclockwise against the blade while holding the locking
rod (Fig. 10):
• 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. 10).
9. Remove the locking rod from the locking rod slot.
WARNING:
not start or operate this unit with the locking rod in the locking rod slot.
WARNING:
can cause the blade tip to break off while in use. This can result in severe
personal injury. Replace the blade.
ASSEMBLY INSTRUCTIONS
The cutting attachment shield should NOT be installed
Screws (3)
To prevent serious
Shield Mount
Bushing Hole
Locking
Rod Slot
Locking
The gear housing gets hot
Blade
If the cutting blade is off-
Retainer
Output
Shaft
To avoid serious personal injury or damage to the unit, do
Do not sharpen the cutting blade. Sharpening the blade
Cutting Attachment
Shield
Fig. 5
Output Shaft
Bushing
Rod
Fig. 6
Fig. 7
Cutting Attachment
Fig. 8
Nut
Pilot Step
Fig. 9