61 PERIODIC SERVICE B Checking Spark Plug Condition & Gap Remove the spark plugs, check condition, and reset the gap or replace with new plugs as necessary. 1. Raise the cargo bed. 2. Before removing spark plugs, clean the area around the base of the plug to keep dirt and debris out of the engine. 3. Remove the spark plug wires from spark plugs. 4. Use a spark plug wrench to remove the spark plugs. 5. Remove plugs and check its condition. Replace the plug if worn or reuse is questionable. 6. Inspect spark plugs for cracked porcelain, pitted electrodes, or other wear and damage. Replace the spark plug if necessary. 7. Check the gap using a wire feeler gauge.
Adjust the gap from 0.6 to 0.7 mm (0.024 to 0.028 in.) by carefully bending the ground electrode. 8. Reinstall the spark plug into the cylinder head. (1) Spark plug A Do not clean the spark plug in a machine using abrasive grit. Some grit could remain in the spark plug and enter the engine causing extensive wear and damage. Tightening torque (initial) 12 to 15 N-m (8.9 to 11 lbf-ft) Retightening torque 23 to 27 N-m (17 to 19 lbf-ft) Recommended spark plug NGK BKR4E