Ryobi RY60511B Operator's Manual page 16

REPLACING THE SPARK PLUG
See Figure 20.
The cultivator uses Champion RCJ-4Y or NGK BPMR7A spark
plug. Use an exact replacement and replace annually.
 Remove the spark plug boot.
 Loosen the spark plug by turning it counterclockwise with
a socket.
 Remove the spark plug.
 Hand thread the new spark plug, turning it clockwise.
 Tighten with a socket and torque to 170 in. lb. minimum,
190 in. lb. maximum. Do not overtighten.
CAUTION
Be careful not to cross-thread the spark plug. Cross-
threading will seriously damage the product.
SPARK
PLUG
REPLACING THE SPARK ARRESTOR
See figure 21.
The muffler is equipped with a spark arrestor screen inside
muffler body. After extended use the screen can become dirty
and may need to be replaced. If replacement is necessary,
use part number 000998216.
WARNING:
To avoid a fire hazard, never run the cultivator without the
spark arrestor in place.
MAINTENANCE
To replace the spark arrestor:
 Remove the five screws that hold the cover.
Note: Removing these screws requires the use of a T20
and T25 torx screwdriver.
 Remove the cover.
 Remove the muffler assembly and muffler gasket. It may
be necessary to work the muffler assembly free from the
muffler gasket.
 Remove the three screws that hold the plates on the
muffler.
 Remove the spark arrester.
 Replace the old spark arrester with the new one.
 Reassemble the muffler by reinstalling the plates and
tightening the three screws.
 Reassemble the muffler and muffler cover and attach to
the muffler gasket with the two screws.
 Reinsert the muffler assembly.
 Reinstall the cover on the tool and fasten with the five
screws.
Note: Do not overtighten screws.
SCREW(S)
Fig. 20
MUFFLER
GASKET
16
COVER
SPARK
ARRESTER
MUFFLER
PLATE
SCREW(S)
MUFFLER
COVER
SCREW(S)
Fig. 20