Ada GroundDrill 12 [12/34] Ground drill 12 ground drill 12

MEASUREMENT FOUNDATION

GroundDrill - 12

SPARK PLUG SERVICE

Recommended spark plugs: F7RTC or other equivalents.

Caution: An incorrect spark plug can cause engine damage. Install spark plug with correct electrode gap. Avoid thing coating on it.

1. Remove the spark plug with a spark plug wrench.

Caution: Mufer is very hot during engine running. Be careful, don’t touch it until it gets cold.

2. Inspect the spark plug.

3. Replace it if the electrodes are worn, or if the insulator is cracked or chipped.

4. Measure the spark plug electrode gap with a suitable gauge. The gap should be 0.70 - 0.80 mm. Correct the gap, if necessary, by care-

fully bending the side electrode.

5. Install the spark plug carefully, by hand, to avoid cross-threading. Tighten the spark plug with a spark plug wrench.

Note: If installing a new spark plug, tighten 1/2 turn after the spark plug seats. If reinstalling the used spark plug, tighten 1/8 - 1/4 turn

after the spark plug seats.

Caution: A loose spark plug can overheat and damage the engine. Over tightening the spark plug can damage the threads in the cylinder head.

9. Long term storage

When storing for more than a month:

1. Remove a fuel from tank.

2. Run engine until it runs out of fuel.

3. Clean the inside of fuel tank and fuel lter with clean gasoline.

4. Remove the spark plug and put small amount of clean motor oil in the spark plug oil.

5. Pull the starter about 2 or 3 times, then stop pulling when the piston is at the top. Replace the plug.

6. Clean the external part of the motor with a cloth soaked in oil.

7. Store the motor in a dry place away from re and heat.