Troy-Bilt TB90BC - Manual (Page 11)

ASSEMBLY INSTRUCTIONS
11
3. While holding the locking rod, loosen the nut on
the blade by turning it clockwise with a 5/8 inch
closed-end or socket wrench (Fig. 14).
4. Remove the nut, blade retainer, and blade. Store the
nut and blade together for future use in a secure
place. Store out of reach of children.
Install the Cutting Attachment
5. Align the shaft bushing hole with the locking rod slot
and insert the locking rod into the shaft bushing hole.
(Fig. 8, Pg. 9). Place the blade retainer on the output
shaft with the flat surface against the output shaft
bushing as shown in Fig. 15. Screw the cutting
attachment counterclockwise onto the output shaft.
Tighten securely.
NOTE: The blade retainer must be installed on the
output shaft in the position shown for the cutting
attachment to work correctly.
6. Remove the locking rod.
7. Install the cutting attachment shield. See Removing
and Installing Cutting Attachment Shield, Pg. 9.
Cutting Attachment
Locking Rod
Blade Retainer
Output Shaft
Bushing
Fig. 15
WARNING: To avoid serious personal injury,
the cutting attachment shield SHALL be in
place at all times while operating the unit as
a grass trimmer.