Manual

REPLACING THE SPARK PLUG
Use only Champion RDZ19H spark plug or equivalent.
The correct air gap is 0.025 in. (0.655 mm.). Remove the
plug after every 25 hours of operation and check its
condition.
1. Stop the engine and allow it to cool. Grasp the plug
wire firmly and pull the cap from the spark plug.
2. Clean dirt from around the spark plug. Remove the
spark plug from the cylinder head by turning a 5/8 in.
socket counterclockwise.
3. Replace cracked, fouled or dirty spark plug. Set the
air gap at 0.025 in. (0.655 mm.) using a feeler gauge
(Fig. 42).
SPARK ARRESTOR MAINTENANCE
1. Remove the muffler cover. See Rocker Arm
Clearance, Pg. 22.
2. With a flat blade screwdriver or Torx T-20 bit,
remove the screw attaching the spark arrestor cover
to the muffler (Fig. 43).
Muffler Spark Arrestor Screen
iiiiiiiiiiiiiiiii_k i _ iiiiiiiiiiiiiiiiiiiiiiiii
Fig. 42
I_lb CAUTION: Do not sand blast, scrape, or clean
electrodes. Grit in the engine could damage the
cylinder.
4. Install a correctly gaped spark plug in the cylinder
head. Tighten by turning the 5/8 in. socket clockwise
until snug.
If using a torque wrench torque to;
110-120 in.-Ib. (12.3-13.5 Nom).
Do not over tighten.
NOTE: A replacement spark plug Part # 791-180852B
can be purchased from your local authorized
dealer.
Tab _ Screw
/ Spark Arrestor Cover
Slot
Fig.43
3. Pull the tab on the spark arrestor cover out of the
muffler. Remove the spark arrestor cover.
4. Remove the spark arrestor screen from the spark
arrestor cover.
5. Clean the spark arrestor screen with a wire brush, or
replace.
6. Reinstall the spark arrestor screen, spark arrestor
cover, and screw.
NOTE: A replacement spark arrestor screen Part #
791-180890 can be purchased from your local
authorized dealer.
ACCESSORIES/REPLACEMENT PARTS
4-Cycle Oil ......................... 753-1249
Oil Fill Plug / Dipstick ................ 791-182378
Spark Plug ......................... 791-180852B
Spark Arrestor Screen ................ 791-180890
Replacement Line Cartridge ........... 753-1156
Inner Reel Spring .................... 791-610317B
Bump Knob TM ...................... 791-153066B
Fuel Cap .......................... 791-181083
Shoulder Harness ................... 791-682075B
These replacement parts can be purchased from your
local authorized dealer or by calling 1-330-558-7220 or
1-866-840-6483.
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