Kohler 15ERG Betriebshandbuch - Seite 30

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5. Clean spark plugs by wiping them with a rag. File

the center electrode to keep it parallel to the side

electrode.

Note: Do not sandblast, wire brush, scrape, or

otherwise service spark plug in poor

condition.

results.

6. Check the spark plug gap before installing any

spark plug. See Figure 3-9. Attain a correct gap

when the feeler (or wire) passes between the spark

plug electrode. It should pass easily but with some

resistance or drag; otherwise adjust as necessary.

The correct gap is 0.8-0.9 mm (0.031-0.035 in.).

1. 0.8-0.9 mm (0.031-0.035 in.) gap

2. Spark plug electrodes

Figure 3-9 Spark Plug Gap Inspection

7. Use a gapping tool to gently bend the side

electrode closer to or farther from the center

electrode to set the correct gap. See Figure 3-10.

Position the side electrode directly over the center

electrode.

18 Scheduled Maintenance

Obtain a new plug for best

1-514

Figure 3-10 Spark Plug Gap Adjustment

8. Reinstall the spark plug.

electrode against the cylinder head. Rotate the

spark plug clockwise until feeling resistance.

9. Use a torque wrench to torque each spark plug to

25 Nm (18 ft. lbs.). Otherwise, hand-tighten the

spark plug until feeling resistance.

10. Use a ratchet wrench to final tighten an additional

1/4 turn. Do not overtighten, as doing so may strip

threads or alter electrode gap setting.

11. Check the spark plug wire connector in the boot for

accumulated dirt, grease, and other debris, and

clean as necessary.

12. Firmly push the spark plug boot onto the spark

plug.

1-511

Do not bump the

TP-6334

9/04