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Greensmaster 1000/1600
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Electrical System
Spark Plug
Use a NGK BPR 5ES spark plug or equivalent. Remove
plug after every 100 operating hours and check its
condition.
1. Make sure engine is OFF. Pull high tension lead off
the spark plug.
2. Clean around spark plug and remove plug from the
cylinder head.
Note: The condition of the spark plug can give an ac-
curate picture of the overall condition of the engine. Use
the chart on the following page as a guide to determine
possible problems with the engine.
3. Inspect the spark plug.
IMPORTANT: Replace a cracked, fouled, or dirty
spark plug. Do not sand blast, scrape, or clean elec-
trodes because engine damage could result from
grit entering cylinder.
4. Set air gap at 0.028 to 0.031 inch (0.7 to 0.8 mm).
Install correctly gapped spark plug and torque to 20 ft–lb
(2.8 kg–m).
Figure 10
0.028 to 0.31 inch
(0.7 to 0.8 mm)
Electrical
System