Hyundai HY300SEI User Manual page 20

SPARK PLUG SERVICE
To insure proper operation the spark arrester should be cleaned thoroughly at
least once every 100 hours of use.
Top maintenance cover
1. Remove the top screw and the top maintenance cover (refer to fig.).
2. Remove the ignition coil (refer to fig.).
3. Clean any dirt and debris around the spark plug base.
Spark Plug Wrench
4. Use a wrench to remove the spark plug (refer to fig.).
5. Visually inspect the spark plug. Clean the spark plug with a brush if it
is to be reused.
6. The spark plug clearance gap should be between 0.7 mm - 0.8 mm
(0.028" to 0.03") (refer to fig.).
7. Install the correctly gapped spark plug back into the original position.
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Screw
Ignition Coil
DC Wire
Spark Plug
HY3000sei User Manual
Ignition Coil
High Voltage wire