Ryobi RY28160, Operator'S Manual

Page: 12 / 52

8 — English
ASSEMBLY

Align the slot in the flanged washer with the slot in the
gear head.

Place the gear head locking tool through the slot in the
flanged washer and gear head.

Remove the blade nut by turning it clockwise.

Remove the cupped washer and the blade.

Remove the flanged washer from the gear head shaft and
retain it for the string head installation.

Remove the three screws securing the brush cutter guard
to gear head.

Remove the brush cutter guard.
NOTE: Store the brush cutter parts together for later use.
ATTACHING THE GRASS DEFLECTOR
See Figure 10.
WARNING:
The line cutting blade on the grass deflector is sharp.
Avoid contact with the blade. Failure to avoid contact
can result in serious personal injury.
 Stop the engine and disconnect the spark plug wire.

Remove the wing screw from the grass deflector.
 Insert the tab on the mounting bracket in the slot on the
grass deflector.

Align the screw hole in the mounting bracket with the
screw hole in the grass deflector.
 Insert the wing screw through the mounting bracket and
into the grass deflector.

Tighten the screw securely.
INSTALLING THE STRING HEAD
See Figure 11.

Stop the engine and disconnect the spark plug wire.

Place the flanged washer on the gear head shaft.
NOTE: The hollow side of the flanged washer should face
the gear head.

Align the slot in the flanged washer with the slot in the
gear head.

Place the gear head locking tool through the slot in the
flanged washer and gear head.

Place the arbor on the gear head. Then turn the arbor
counter clockwise with a wrench to 120 in.lb. to tighten
and install.

Place the string head assembly on the arbor. Make sure
the opening on the string head assembly seats completely
on the arbor. Install the spool retainer and turn counter-
clockwise to secure.

Remove the plastic seal from the string head assembly.
Pull outward on the strings to rotate the spool into the
cutting position.

Push the spool retainer down while pulling on string(s)
to manually advance the string and to check for proper
assembly of the string head.
CONVERTING FROM STRING TRIMMER TO
BRUSH CUTTER
To convert from the string trimmer to the brush cutter, remove
the string head assembly and straight shaft grass deflector,
attach the brush cutter guard and install the blade.
REMOVING THE GRASS DEFLECTOR AND
STRING HEAD
See Figures 10 - 11.

Stop the engine and disconnect the spark plug wire.

Hold the string head and rotate the spool retainer clockwise
to remove.

Remove the string head assembly.

Align the slot in the flanged washer with the slot in the
gear head.

Place the gear head locking tool through the slot in the
flanged washer and gear head.

Using a wrench, turn the arbor clockwise to loosen and
remove.

Remove the flanged washer and retain it for the blade
installation.

Remove the wing screw securing the grass deflector.

Remove the grass deflector.
NOTE: Store the string head parts together for later use.
INSTALLING THE TRI-ARC
®
BLADE AND
BRUSH CUTTER GUARD
See Figure 9.

Stop the engine and disconnect the spark plug wire.

Install the brush cutter guard. Refer to Attaching the
Brush Cutter Guard earlier in this manual.

Place the flanged washer over the gear head shaft with
the hollow side toward the brush cutter guard.

Center the blade on the flanged washer, making sure the
blade fits flat and the raised hub of the flanged washer
goes through the hole in the blade.

Install the cupped washer with the raised center away
from the blade.

Place the blade nut onto the gear head shaft.

Place the gear head locking tool through the slot in the
flanged washer and gear head.

Install the blade nut by turning it counterclockwise (left
handed threads).

Tighten the blade nut securely and torque to 120 in.lb.
minimum.