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17
0.025 in.
(0.655 mm.)
REPLACING THE SPARK PLUG
Use a replacement part number 180852 spark plug. 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. 29).
Fig. 29
4. Install a correctly-gapped spark plug in the cylinder
head. Turn the 5/8 in. socket clockwise until snug.
If using a torque wrench torque to:
110-120 in.•lb. (12.3-13.5 N•m)
Do not over tighten.
Fig. 30
Muffler
Spark Arrestor Screen
Spark Arrestor Cover
Screw
Tab
Slot
SPARK ARRESTOR MAINTENANCE
1. Remove the muffler cover. See Rocker Arm Clearance.
2. With a flat blade screwdriver or Torx T-20 bit,
remove the screw attaching the spark arrestor cover
to the muffler (Fig. 30).
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 it.
6. Reinstall the spark arrestor screen, spark arrestor
cover and screw.
MAINTENANCE AND REPAIR INSTRUCTIONS
Do not sand blast,
scrape or clean
electrodes. Grit in the engine could damage
the cylinder.
WARNING:
Summary of Contents for 4-Cycle
Page 1: ...P N 769 00874 10 03 PRINTED IN USA ...
Page 10: ...10 STARTING STOPPING INSTRUCTIONS Starter Rope Throttle Control ON I OFF O ...
Page 13: ...13 MAINTENANCE AND REPAIR INSTRUCTIONS ...
Page 23: ...P N 769 00874 10 03 IMPRIMÉ AUX ÉTATS UNIS ...
Page 32: ...F10 INSTRUCTIONS DE DÉMARRAGE ET ARRÊT ...
Page 43: ...F21 REMARQUES ...
Page 44: ...F22 REMARQUES ...
Page 47: ...P N 769 00874 10 03 IMPRESO EN LOS EE UU ...
Page 54: ...E8 INFORMACION DEL ACEITE Y DEL COMBUSTIBLE Fig 7 Fig 8 ...
Page 67: ...E21 NOTAS ...
Page 69: ...E23 PARTS LIST ENGINE PARTS MODEL TB144 4 CYCLE GAS CULTIVATOR ...
Page 71: ...E25 PARTS LIST ...