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Figure 47
1. Oil-fill hole
2. Dipstick
2. Replace and secure the dipstick.
3. Wipe up any spilled oil.
Servicing the Spark Plug
Service Interval: Every 100 hours/Every 6 months
(whichever comes first)—Check the
spark plug.
Every 300 hours/Yearly (whichever comes
first)—Replace the spark plug.
Type: NGK BPR6ES or equivalent
Gap: 0.7 to 0.8 mm (0.028 to 0.031 inch)
Note: Use a 20 mm (13/16 inch) spark-plug wrench for
removing and installing the spark plug.
Removing the Spark Plug
1. Park the machine on a level surface and shut off the
engine; refer to
Shutting Off the Engine (page
2. Ensure that the machine surfaces are cool.
3. Pull the spark-plug wire off the terminal of the spark
plug
(Figure
48).
Figure 48
1. Spark plug
4. Clean around the spark plug.
3. Oil-level upper limit
4. Oil-level lower limit
24).
2. Wire
5. Rotate the spark plug counterclockwise using a 20 mm
(13/16 inch) spark-plug wrench to remove the plug
and the sealing washer
Checking the Spark Plug
Note: Use a gapping tool/feeler gauge to check and adjust
the gap. Install a new spark plug if necessary.
1. Look at the center of the spark plug
see light brown or gray on the insulator, the engine is
operating properly.
Important: Never clean the spark plug. Always
replace the spark plug when it has a black coating,
worn electrodes, an oily film, or cracks.
1
1. Side electrode
2. Center electrode
2. Use a gapping tool for spark plugs or a feeler gauge to
measure the gap between the side electrode and center
electrode
(Figure
3. If the gap is not within the specified range, do the
following:
A. If the gap is too small, carefully bend the side
electrode away from the center electrode until
the gap between the electrodes is 0.7 to 0.8 mm
(0.028 to 0.031 inch).
32
(Figure
49).
Figure 49
(Figure
2
3
4
G019300
Figure 50
3. Insulator
4. 0.7 to 0.8 mm (0.028 to
0.031 inch) gap
50).
G019749
50). If you
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