Troy-Bilt TB42 BC Operator'S Manual Download

Page: 3 / 16

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

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.

KNOW YOUR UNIT

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).

ASSEMBLY INSTRUCTIONS

WARNING:

To prevent serious personal injury, never operate the trimmer without the cutting

attachment shield in place.

Guide Recess

Fig. 3

Release

Button

EZ-Link™ Coupler

Upper Shaft

Housing

Fig. 4

Lower Shaft

Housing

Primary Hole

Knob

Fig. 5

90˚ Edging Hole

(Trimmer Only)

APPLICATIONS

As a trimmer:

• Cutting grass and light weeds.

• Edging

• Decorative trimming around trees,

fences, etc.

Throttle

Control

J-Handle

Shaft Grip

Spark Plug

Shaft Housing

Starter

Rope

Grip

Muffler

On/Off Control

Cutting Head

Cutting Head Shield

Fuel Cap

Choke Lever

Primer Bulb

EZ-Link™

Air Filter

Cover

ASSEMBLY TOOLS REQUIRED

• Phillips screwdriver

REMOVE AND INSTALL THE CUTTING ATTACHMENT SHIELD

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.

ASSEMBLY INSTRUCTIONS

WARNING:

The cutting attachment

shield should NOT be installed when
operating the unit with a blade. Remove the
cutting attachment shield before removing
or installing the blade.

Cutting

Attachment

Shield

Screws (3)

Gear Housing

Fig. 6

WARNING:

To avoid serious personal injury, the cutting attachment shield MUST be in place at all