Checking Spark Plug

1. Park machine safely. (See Parking Safely in the SAFETY section.)

2. Let engine cool.

3. Lift hood.

4. 
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   Twin cylinder engine shown

   Disconnect spark plug wires (A), one on each side on V-twin engines.

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5. Remove spark plugs.

6. Clean spark plug carefully with a wire brush.

7. Inspect spark plug for:

   • Cracked porcelain.
   • Pitted or damaged electrodes.
   • Other wear or damage.
   
   

8. Replace spark plug as necessary.

9. 
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   Check plug gap (B) with a wire feeler gauge. To change gap, move the outer electrode.

   Gap must meet specifications.

   Spark Plug	Gap	0.76 mm (0.030 in.)

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10. Install and tighten spark plugs to specifications.

    Spark Plug	Torque	20 N·m (15 lb.-ft.)

11. Connect spark plug wires and lower hood.