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3. Maintenance of spark plug
ATTENTION! Don't use the spark plug without
correct caloricity scale.
The machine version is F7TC. To keep engine in good
working condition, spark plug must be clean and without
carbon deposit.
3.1 Use the specific sleeve spanner to assemble and
disassemble spark plug.
WARNING! If engine is just stop, the muffler will be
very hot. Please avoid touching the muffler.
3.2 Check spark plug, if it is distinctly worn out or dehisced, please change a new one. If it is
still well, clean it.
3.3 Check spark plug clearance, the right clearance should be 0.7-0.8mm. If it is necessary,
please turn the electrode to adjust it.
3.4 In order to avoid the wrong touch of whorls, check spark plug gasket.
3.5 Put on spark plug gasket, use the sleeve spanner to screw on it.
ATTENTION! When the gasket is just pressed. If it is new spark plug, turn 1/2 circle more to
press the gasket .If it is old spark plug, turn 1/8—1/4 circle more.
ATTENTION! Spark plug should be rightly assembled. If not, it will become hot and damage
the engine.
4. Spark eliminator maintenance (Choose accessories)
ATTENTION! If the engine has just worked, muffler will be hot, operate it after cooling.
ATTENTION! Spark eliminator must be maintained once per 100 hours to keep it good
performance.
4.1 Unscrew two 4 mm screws from exhaust guide pipe and remove exhaust guide tube.
4.2 Unscrew four 5 mm screws from muffler cover and remove the cover.
4.3 Unscrew 4 mm screws from spark eliminator and remove it from muffler.
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