Checking Spark Plugs (Gas Model)

CAUTION: Avoid injury! Touching hot surfaces can burn 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.

IMPORTANT: Avoid damage! Do not clean spark plugs with abrasives.

1. Raise attachment to service position. (See Using the Lift Cylinder Safety Support in the Safety section.)

2. Park vehicle safely. (See Parking Safely in the Safety section.)

3. Clean area around each spark plug.

   NOTE: Breather hose rotated away from engine for photo clarity.

4. 
   TCAL45039-UN-14MAY13

   Disconnect the spark plug wire (A) from each plug.

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5. Remove and inspect spark plugs:

   • Clean each plug and check for damage; replace if necessary.
   • If plugs are in good condition, check gap.
   
   

6. 
   TCAL45040-UN-14MAY13

   Check and adjust spark plug gap to specification (B).

   Item	Measurement	Specification
   Spark Plug	Gap	1-1.2 mm (0.039 - 0.047 in.)

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7. Install spark plugs.

   • Tighten to specification.

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

   
   

8. Install each spark plug wire.

9. Lower attachment.