Operator's Manual

Assembly 15
Converting from Trimmer to Brushcutter
Model Nos. 51934 & 51940
To convert from the trimmer to the brushcutter, remove
the trimmer head assembly, remove the grass deflector,
attach the brushcutter guard, and install the blade.
To Remove the Trimmer Head Assembly and Grass
Deflector
See Figure 10 and Figure 11.
Follow these steps to remove the trimmer head assembly
and grass deflector.
1. Align the slot in the flanged washer with the slot in
the gear head.
2. Insert the head locking tool through the flanged
washer and gear head.
3. Remove the drive shaft and trimmer head assembly
by turning the drive shaft clockwise (left-handed
threads).
4. Remove the flanged washer and retain it for the blade
installation.
5. Remove the screw securing the grass deflector.
6. Remove the grass deflector.
Note: Store the trimmer head assembly parts
together for future use.
To Attach the Brushcutter Guard
See Figure 12.
Note: To protect the operator, always be sure to attach
the brushcutter guard.
Follow these steps to attach the brushcutter guard.
1. Place the guard onto the gear head as shown.
2. Insert the three hex head screws from the bottom
through the guard into the gear head.
3. Tighten the screws securely and torque to
40-50 in.lb.
To Install the Blade
See Figure 13.
Follow these steps to install the blade.
1. Place flanged washer over the gear shaft with the hol-
low side toward the brushcutter guard.
2. Center the blade on the flanged washer, making sure
the blade fits flat and the raised hub goes through the
hole in the blade.
3. Install the cupped washer with the raised center away
from the blade.
4. Place the blade nut onto the gear shaft.
5. Insert the head locking tool through the flanged
washer and gear head.
6. Install the blade nut by turning it counterclockwise
(left-handed threads).
7. Tighten the blade nut and torque to 120 in.lb. mini-
mum (finger tight plus 1/2 turn).
Figure 10
Figure 11
Figure 12
Figure 13
Head
Locking
Tool
Drive
Shaft
Flanged Washer
Gear
Head
Trimmer
Head
Assembly
Slot
Grass Deflector
Straight Shaft
Guard
Hex Head
Screw
Gear Head
Brushcutter
Gear Shaft
Brushcutter
Cupped
Washer
Flanged
Washer
Blade
Blade Nut
Guard