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16
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 plate on the
muffler.
Remove the spark arrester.
Replace the old spark arrester with the new one.
Reassemble the muffler by reinstalling the plate 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.
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
Fig. 20
SPARK
ARRESTER
PLATE
MUFFLER
COVER
MUFFLER
GASKET
SCREW(S)
SCREW(S)
COVER
SCREW(S)
MUFFLER
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.
Fig. 20