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5. Fill the crankcase with the proper type of new oil;
refer to Servicing the Engine Oil.
6. Run the engine for about 3 minutes, stop the engine,
and check for oil leaks around the oil filter and drain
valve.
7. Check the engine oil level and add oil if needed.
8. Wipe up any spilled oil.
Servicing the Spark Plug
Service Interval: Every 100 hours—Check the spark
plugs.
Ensure that the air gap between the center and side
electrodes is correct before installing the spark plug.
Use a spark plug wrench for removing and installing the
spark plug and a gapping tool/feeler gauge to check and
adjust the air gap. Install a new spark plug if necessary.
Type: Champion® RCJ8Y or equivalent Air Gap:
0.030 inch (0.75 mm)
Removing the Spark Plug
1. Lower the boom and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Disconnect the wire from the spark plug (Figure 37).
Figure 37
1. Spark-plug wire/spark plug
4. Clean around the spark plug to prevent dirt from
falling into the engine and potentially causing
damage.
Note: The heat shield may interfere on the right
side; remove it if necessary and replace it when
finished.
5. Remove the spark plug and the metal washer.
Checking the Spark Plug
1. Look at the center of the spark plug (Figure 38).
If you see light brown or gray on the insulator, the
engine is operating properly. A black coating on the
insulator usually means that the air cleaner is dirty.
2. If needed, clean the spark plug with a wire brush to
remove carbon deposits.
1. Center electrode insulator
2. Side electrode
Important: Always replace the spark plug when
it has worn electrodes, an oily film on it, or has
cracks in the porcelain.
3. Check the gap between the center and side electrodes
(Figure 38). Bend the side electrode (Figure 38) if
the gap is not correct.
Installing the Spark Plug
1. Install the spark plug and the metal washer. Ensure
that the air gap is set correctly.
2. Tighten the spark plug to 16 ft-lb (22 N-m).
3. Connect the wire to the spark plug (Figure 38).
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Figure 38
3. Air gap (not to scale)
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