Know Your Unit; Assembly Instructions - Troy-Bilt TB42 BC Operator's Manual

KNOW YOUR UNIT

APPLICATIONS
As a trimmer:
• Cutting grass and light weeds.
• Edging
• Decorative trimming around trees,
fences, etc.
ASSEMBLY TOOLS REQUIRED
• Phillips screwdriver
J-Handle
Shaft Housing
Cutting Head

ASSEMBLY INSTRUCTIONS

WARNING:
To prevent serious personal injury, never operate the trimmer without the cutting
attachment shield in place.
INSTALL AND ADJUST THE J-HANDLE
On some units, the J-handle may be pre-
installed. In this case, loosen the screws and
go to step 5.
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, 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.
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*
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. 5).
2. Press and hold the release button (Fig. 3).
3. While firmly holding the upper shaft housing,
pull the lower shaft housing straight out of
the EZ-Link™ coupler (Fig. 4).
INSTALLING THE ADD-ON
NOTE: To make installing or removing the add-on easier, place the unit on
the ground or on a work bench.
1. Turn knob counterclockwise to loosen (Fig. 5).
2. While firmly holding the add-on, push it straight into the EZ-Link™
coupler (Fig. 4).
NOTE: Aligning the release button with the guide recess will help
installation (Fig. 3).
3. Turn the knob clockwise to tighten (Fig. 5).
For decorative trimming/edging with the line cutting head, lock the release button into the 90° hole (Fig. 5).
Choke Lever
Spark Plug
Muffler
Shaft Grip
On/Off Control
Throttle
EZ-Link™
Control
Cutting Head Shield
Decal
EZ-Link™ Coupler Primary Hole
Release
Button
Upper Shaft
Housing
Guide Recess
Fig. 3
90˚ Edging Hole
(Trimmer Only)
REMOVE AND INSTALL THE CUTTING ATTACHMENT SHIELD
WARNING:
Starter
shield should NOT be installed when
Rope
Grip 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
Fuel Cap
Remove the cutting attachment shield from the
shield mount by removing the three (3) screws with
Air Filter
a flat blade screwdriver (Fig. 6). Store parts for
Cover
future use.
INSTALL THE HARNESS
WARNING:
serious personal injury.
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. 7).
Primer Bulb
3. Put the harness on over head and onto shoulder. Snap it
on to the support fitting (Fig. 8).
4. Adjust length to fit the operator's size. Pull tab to
lengthen, pull strap to shorten (Fig. 9).
Install the cutting attachment shield when using the unit as a grass trimmer
WARNING:
times while operating 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
WARNING:
hot for a short time even after the unit is turned off. Do not touch the gear housing until it has cooled.
See Remove and Install the Cutting Attachment Shield.
Remove 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).
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, remove the cutting
attachment by turning it clockwise off of the
output shaft (Fig. 12). Store the cutting attachment
for future use.
NOTE: The blade retainer under the cutting
attachment will be used when installing the
cutting blade.
Fig. 2
Lower Shaft
Housing
Fig. 4
Knob
Fig. 5
ASSEMBLY INSTRUCTIONS
Cutting
The cutting attachment
Attachment
Shield
Always use the shoulder harness when using the cutting blade to avoid
Support
Fitting
Fig. 8
To avoid serious personal injury, the cutting attachment shield MUST be in place at all
The gear housing gets hot with use. It can result in injury to the operator. The housing remains
Output Shaft Bushing
Shaft Bushing Hole
Locking Rod
Slot
Locking Rod
Cutting Attachment
Locking Rod
Slot
Locking Rod
Screws (3)
Gear Housing
Fig. 7
Fig. 9
Output Shaft
Fig. 10
Fig. 11
Fig. 12
3