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MAiNTAiNiNG
THE SPARK
PLUG
1. Stop the engine and allow it to cool.
2. Open the spark plug cover (Fig. 16). Grasp the spark plug boot
firmly and pull it from the spark plug.
3. Clean around the spark plug. Remove the spark plug from the
cylinder head with a 5/8-inch socket, turning counterclockwise.
[____J
ARNING:
Do not sand blast, scrape or clean spark plug i
electrodes. Grit in the engine could damage the cylinder.
J
4. Inspect the spark plug. If the spark plug is cracked, fouled or
dirty, replace it with replacement part #753-05784,
a Champion
RDZ4H or an equivalent spark plug.
5. Use a feeler gauge to set the air gap at 0.025 in. (0.635 ram}
(Fig. 17).
6. Install the spark plug in the cylinder head. Tighten the spark plug
with a 5/8-inch socket, turning it clockwise until snug.
NOTE: If using a torque wrench, torque to:
110-120 in.olb. (12.3-13.5 Nora). Do not over tighten.
7. Reattach the spark plug boot. Close the spark plug cover.
Fig. 16
0.025 in.
(0.635 ram}
Fig. 17
16
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