Troy-Bilt 182826 TB4000 User Manual

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6. Align the shaft bushing hole with the locking rod 

slot and insert the locking rod into the bushing hole
(Fig. 3-8, Pg. 10).

7. Put the blade retainer and nut on the output shaft.

Make sure that the blade is installed correctly. 

8. Tighten nut counterclockwise against the blade

while holding the locking rod;

• If using a torque wrench and an 5/8 inch socket

tighten to;

325 - 335 in•lb, 

27 - 28 ft.•lb,

37 -38 N•m.

• Without a torque wrench, use a 5/8 inch 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. 3-13).

9. Remove the locking rod from the locking rod slot.

1. Align the shaft bushing hole with the locking rod 

slot and insert the locking rod into the bushing hole
(Fig. 3-8, Pg. 10).

2. Hold the locking rod in place by grasping it next to

the boom of the unit (Fig. 3-14).

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. 3-14). 

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 bush-
ing hole. (Fig. 3-8, Pg. 10). Place the blade retainer
on the output shaft with the flat surface against the
output shaft bushing as shown in Fig. 3-15. Screw
the cutting attachment counterclockwise onto the
output shaft. Tighten securely.

6. Remove the locking rod.

7. Install the cutting attachment shield. See 

Section 3, Assembly, Remove and Install Cutting
Attachment Shield.