honda-power-equipment hht31s ユーザーズマニュアル

1. Install the protective plastic cover, that came 

with the blade, back on the blade.

2. Insert a commercially available 4 mm hex tool 

or equivalent fully into the gear case hole.

3. Turn the blade until you feel the tool drop into 

the hole in cover plate/spacer A. Verify the 
blade does not turn. The output shaft and 
blade lock nut have a left-hand thread. Make 
sure the tool remains in the hole, then loosen 
the blade nut as shown. Pay attention to the 
order and orientation of the parts as they are 
removed.

4. Installation is the reverse of removal. Make 

sure you install the blade with the cutting 
edges in the direction of rotation. Be sure to 
align the hole in the blade with the shoulder 
on cover plate/spacer A. Tighten the blade nut 
with a torque wrench.
Blade nut torque: 14 ft-lb (20 N·m, 2.0 kg-m)

Changing the Debris Shield     
Refer to the applicable illustration for removing and installing the debris shields. Tighten the bolts/
washers securely with a torque wrench.
Spacer bolt/washers torque: 2.5 ft-lb (3.4 N·m, 0.34 kg-m).