Troy-Bilt TB490BC Operator's Manual page 8

Cutting
Attachment
Shield
Screws
Gear Housing
2. Hold the locking rod in place by grasping it next to
the boom of the unit (Fig. 9).
3. While holding the locking rod, remove the cutting
attachment by turning it clockwise off of the output shaft
(Fig. 10). Store the cutting attachment for future use.
NOTE: The blade retainer under the cutting attachment
will be used when installing the cutting blade.
Shield Mount
Fig. 7
Install the cutting attachment shield when using
the unit as a grass trimmer
_1_ fWARNING: To avoid serious personal
_, | njury, the cutting attachment shield MUST
_|be in place at all times while operating the I
|unit as a grass trimmer. I
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. 7).
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
_[WARNING: The gear housing gets hot with,
use. It can result in injury to the operator. I
The housing remains hot for a short time I
even after the unit is turned off. Do not
touch the gear hous ng unt t has coo ed.
1. Align the shaft bushing hole with the locking rod slot and
insert the locking rod into the shaft bushing hole (Fig. 8).
Output Shaft
Shaft Bushing Hole__\ _ j
._ _ Output Shaft
_ Bushing
Locking Rod - _ _
Fig. 8
Fig. 9
Cutting Attachment
Locking Rod
Slot
Locking Rod
Fig. 10
Install the Cutting Blade
WARNING: To avoid Serious personal
injury, always wear gloves while handling or
installing the blade. I
4. Place the cutting blade on the output shaft bushing
(Fig. 11).
Blade Retainer
Pilot Hole
Nut
Cutting
Blade
Shield
Mount
/
Output Shaft
Bushing
Locking Rod
Fig. 11
8