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Ryobi 990r - Line Spool Installation; Brush Blade Installation Details

Ryobi 990r
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WARNING
Make sure the blade is flat against the washer
after the lock nut is tightened. If the blade is
off-center, the trimmer will be damaged by
vibration, and the blade may fly off. Failure to
obey this warning may cause injury to yourself
or others.
9
6. When assembling the brush blade, the blade edge
should line up with the blade locating mark on the
casting (Fig. 10). The brush blade should be within a
blade thickness of the mark. If the blade isn't lined up
correctly, refer to Fig. 7 for reassembly.
Blade Locating
Mark
Fig. 10
INSTALLING THE LINE SPOOL
1. Install the blade guard over the brush blade. Insert the
locking rod into the locking rod slot. Loosen the lock
nut by turning it clockwise (Fig. 7).
2. Remove the lock nut, retaining washer and brush
blade.
3. Make sure that you have all of the necessary parts to
install the line spool (Fig. 6).
4. Insert the locking rod tool into the locking rod slot
and place the washer on the shaft (Fig. 6). Screw the
spool counterclockwise onto the shaft.
5. Install the line guard using three (3) screws (Fig. 6).
Tighten the screws securely.
ASSEMBLY INSTRUCTIONS (Continued)

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