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TP-7092 2/21 65Section 4 Scheduled Maintenance
4.3 Spark Plugs
Accidental starting.
Can cause severe injury or death.
Disconnect the battery cables before
working on the generator set.
Remove the negative (- ) lead first
when disconnecting the battery.
Reconnect the negative (- ) lead last
when reconnecting the battery.
WARNING
Disabling the generator set. Accidental starting can
cause severe injury or death. Before working on the
generator set or equipment connected to the set, disable the
generator set as follows: (1) Press the generator set off/reset
button to shut down the generator set. (2) Disconnect the
power to the battery charger, if equipped. (3) Remove the
battery cables, negative (- ) lead first. Reconnect the negative
(- ) lead last when reconnecting the battery. Follow these
precautions to prevent the starting of the generator set by the
remote start/stop switch.
Hot engine and exhaust system.
Can cause severe injury or death.
Do not work on the generator set until
it cools.
WARNING
Reset the spark plug gap or replace the plugs with new
plugs as necessary.
1. Clean the area around the base of the spark plug to
keep dirt and debris out of the engine.
2. Remove the spark plug and check its condition.
Replace the spark plug if it is worn or if its reuse is
questionable.
3. Check the spark plug gap using a wire feeler
gauge. See Figure 4-5 for the recommended
spark plug gap. Adjust the gap by carefully bending
the ground electrode. See Figure 4-6 and
Figure 4-7.
4. Reinstall the spark plug into the cylinder head.
Torque the spark plug to 24.4- 29.8 Nm
(18- 22 ft. lb.)
Generator Set Model Spark Plug Gap
14 and 20 kW models 0.76 mm (0.030 in.)
Figure 4-5 Spark Plug Gap
1- 514
Figure 4-6 Checking the Spark Plug Gap
1- 511
Figure 4-7 Adjusting the Spark Plug Gap
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