Toro 51954 - Replacing the Spark Arrestor; Replacing the Spark Plug

20
Figure 17
Maintenance
Replacing the Spark Arrestor
See Figure 17.
Note: Depending on the type of fuel used, the type and
amount of oil used, and/or your operating conditions, the
exhaust port and mufer may become blocked with carbon
deposits. If you notice a power loss with your gas powered
tool, you may need to remove these deposits to restore
performance. We highly recommended that only qualied
service technicians perform this service.
The spark arrester may need to be replaced after repeated
use. If replacement is necessary, use Toro part number
000998216.
To replace the spark arrester:
1. Remove the ve screws that hold the cover.
Note: Removing these screws requires the use of a T20
and T25 torx screwdriver.
2. Remove the cover.
3. Remove the two screws holding the mufer assembly in
place.
4. Remove the mufer assembly and mufer gasket. It
may be necessary to work the mufer assembly free
from the mufer gasket.
5. Separate the mufer cover from the mufer.
6. Remove the three screws that hold the plates on the
mufer.
7. Remove the spark arrester.
8. Replace the old spark arrester with the new one.
9. Reassemble the mufer by reinstalling the plates and
tightening the three screws (torque to 18 in.lb mini-
mum, 22 in.lb. maximum).
10. Reassemble the mufer and mufer cover and attach to
the mufer gasket with the two screws.
Spark
Arrester
Plate
Muffler
Cover
Muffler
Gasket
Screw(s)
Screw(s)
Cover
Screw(s)
Muffler
11. Reinsert the mufer assembly and tighten two screws to
engine (torque to 60 in.lb minimum, 80 in.lb. maxi-
mum).
12. Reinstall the cover on the tool and fasten with the ve
screws (torque to 16 in.lb minimum, 22 in.lb. maximum).
Note: Do not over-tighten screws.
Replacing the Spark Plug
See Figure 18.
All model numbers included in this manual use a
Champion RCJ4 spark plug. Use an exact replacement and
replace annually.
1. Remove the spark plug boot.
2. Loosen the spark plug by turning it counterclockwise
with a socket.
3. Remove the spark plug.
4. Hand thread the new spark plug, turning it clockwise.
5. Tighten with a socket. (torque to 170 in.lb. minimum,
190 in.lb. maximum. Do not over-tighten).
CAUTION:
Be careful not to cross-thread the spark plug.
Cross-threading will seriously damage the
product.
Figure 18
Spark
Plug
Spark Plug Boot