Checking Spark Plug

CAUTION: Avoid injury! Touching hot surfaces burns skin. The engine, components, and fluids are hot if the engine has been running. Allow the engine to cool before servicing or working near the engine and components.

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

2. Lift hood.

3. 
   MXT012542-UN-30OCT14

   Picture Note: X590 model shown, other models similar.

   Disconnect the spark plug wire (A), one on each side of engine.

---




4. Remove each spark plug.

5. Clean spark plug carefully with a wire brush.

6. Inspect spark plug for:

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

7. NOTE: In Canada, replace spark plug with resistor plug only.

   Replace spark plugs as necessary.

8. 
   MXAL46396-UN-05APR13

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

   Item	Measurement	Specification
   Spark Plug	Gap	0.75 mm (0.030 in.)

---




9. Install spark plugs and tighten to specification:

   Item	Measurement	Specification
   Spark Plugs	Torque	15 N·m (11 lb.-ft.)

10. Connect spark plug wires and lower hood.