Ryobi 780r Operator's Manual page 13

5. Make sure that the cutting blade is centered
on the pilot step and sitting flat against the
output shaft bushing (Fig. 12).
WARNING: If the cutting blade is
off-center, the unit will vibrate, and
the blade may fly off, which can
cause serious personal injury.
6. Align the shaft bushing hole with the locking
rod slot and insert the locking rod into the
bushing hole (Fig. 8).
7. Put the blade retainer and nut on the output
shaft. Make sure that the blade is installed
correctly.
8. Tighten counterclockwise against the blade
while holding the locking rod (Fig. 13).
ASSEMBLY INSTRUCTIONS
Pilot Step
Fig. 12
Counterclockwise
Fig. 13
• 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. 14).
9. Remove the locking rod from the locking rod
slot.
WARNING: To avoid serious
personal injury or damage to the
unit, do not start or operate this unit
with the locking rod in the locking rod
slot.
10.Remove the cutting blade cover by
un-snapping the plastic lock on the cover
and pulling it from the blade. Store the cover
for future use.
WARNING: Do not sharpen the
cutting blade. Sharpening the blade
can cause the blade tip to break
off while in use. This can result in
severe personal injury. Replace the
blade.
NOTE: A replacement cutting blade,
Part # 145873 can be purchased from
you local authorized dealer.
1/4-1/2 turn
Counterclockwise
Fig. 14
13