Ryobi RY52504 - Manual (Page 9)

9
 Reinstall the bolt, lock washer, and hex nut to secure.
 Connect the latch on the shoulder harness to the strap
hanger.
ASSEMBLY
CONNECTINg THE POWER HEAD TO THE
EXTENSION SHAFT AND PRUNER ATTACH-
MENT
See Figure 4.
The pruner attachment connects to the power head, or for
extra reach to an extension shaft, by means of a coupler
device.
To install the attachment:

Loosen the knob on the coupler of the power head shaft
and remove the end cap from the attachment.
 Push in the button located on the shaft of the pruner at-
tachment. Align the button with the guide recess on the
extension shaft coupler and slide the two shafts together.
Rotate extension shaft until button locks into the position-
ing hole.
NOTE: The attachment should only be operated with the
blade in a vertical position. If the button does not release
completely in the positioning hole, the shaft is not locked
into place. Slightly rotate from side to side until the button
is locked into place.
 Tighten the knob securely.
 Repeat previous steps to attach extension shaft to power
head.
AUTOMATIC BAR AND CHAIN LUBRICATION
Add bar and chain lubricant in the bar lube reservoir before
starting the engine of the power head. Refer to
Automatic
bar and chain lubrication in the Maintenance section of
this manual.
FUELINg AND REFUELINg THE PRUNER
FUEL MIXTURE
This product is powered by a -cycle engine and requires
pre-mixing gasoline and -cycle lubricant. Pre-mix unleaded
gasoline and -cycle engine lubricant in a clean 1 gallon
container approved for gasoline.

This engine is certified to operate on unleaded gasoline
intended for automotive use.
 Mix high quality -cycle engine lubricant at .6 oz. per
gallon.
 Do not use automotive lubricant or -cycle outboard
lubricant.
 DO NOT mix quantities larger than usable in a 30-day
period.
Fig. 4
COUPLER
KNOB
EXTENSION
SHAfT
POwER HEAD
SHAfT
POSITIONING
HOLE
GUIDE
RECESS
BUTTON
WARNINg:
Be certain the knob is fully tightened before operating
equipment; check it periodically for tightness during use
to avoid serious injury.
To remove:

Loosen the knob.
 Push in the button and twist the shafts to remove and
separate ends.
Fig. 3
SHOULDER
STRAP
LATCH
LOCK NUT
BOLT
STRAP
HANGER
“j”
HANDLE
NUT
BOLT
LOCK
wASHER
NUT
BOLT
fIG. A fIG. B
PREMIUM EXACT MIX™ (50:1)
gASOLINE LUBRICANT
1 Gallon (US) .6 oz.
1 Liter 0 cc (0 ml)