EVO1000i
EVO2000i
NGK
CR5HSA
CR6HSA
Bosch
--
UR6AC
Champion
--
P-RZ9HC
Denso
U16FSR-U
U20FSR-U
Spark Plug Service
Spark Plug Service
To ensure proper engine operation, the spark plug must
be properly gapped and free of deposits.
6. Using the spark plug wrench, loosen and remove the
spark plug.
WARNING
If the engine has been running, the muf er will
reach temperatures that could cause severe
burns. DO NOT TOUCH.
Recommended Spark Plug Replacement: 101566A
*
TABLE 7. Spark Plug Equivalents
To service the spark plug, you will need:
Clean cloth
Spark plug wrench
New spark plug (if existing spark plug is exces-
sively worn or damaged)
Wire brush
Spark plug gauge (for setting spark plug gap)
1. Stop the generator if the engine is running. Allow to
completely cool.
2.
3. Remove the top maintenance cover.
4. Remove the spark plug cap.
FIGURE 40: Spark Plug Cap Removal
5. Clean any dirt from around spark plug base.
FIGURE 41: Spark Plug Removal
7. Inspect the spark plug.
If spark plug is damaged or excessively worn, or if
insulator is cracked or chipped, use a new spark
plug.
If the spark plug is in good condition, clean spark
plug with wire brush.
8. Measure spark plug gap with spark plug gauge.
Gap should be: 0.024-0.028 in. (0.60-0.70 mm).
0.024-0.028 in
(0.60-0.70 mm)
FIGURE 42: Correct Spark Plug Gap
9. If necessary, adjust gap by carefully bending side
electrode.
10. Inspect spark plug washer and verify it is in good con-
dition.
11. Reinstall the spark plug by hand to prevent cross-
threading.
12. After the spark plug is seated, tighten with the spark
plug wrench to compress the washer.
If installing a new spark plug, tighten l/2 turn after
the spark plug seats to compress the washer.
If reinstalling a used spark plug, tighten l/8 - l/4 turn
after the spark plug seats to compress the washer.
13. Reinstall the top maintenance cover.
NOTICE
The spark plug must be securely tightened. An improperly
tightened spark plug can become very hot and could
damage engine. Never use spark plugs that have an
improper heat range. Use only recommended spark plugs
or equivalent.
* See Maintenance Parts at the end of this manual.
24
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