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1. Normal function:
Normal insulation terminal is gray, beige or light brown. Make sure no combustion residues, the electrodes burnt or corroded, which
indicates that the engine has an overheating problem, keep well maintained.
NOTE: If the insulation goes white on the side, it means it is hot. Often by the use of an inappropriate spark plug or a role in the
regulation of the oil is not correct.
2. If there is a case, where there is dirt:
Generally, the electrodes are damaged, if black oil-contaminated on insulator tip at end of spark plug, burnt end of a spark plug, carbon
layer covering the end of the spark plug. This is usually due to the excessive use of oil, improper choke use or incorrect quality of oil.
Removal and replacement of spark plugs
1. First remove the spark plug cap.
2. Using the special spanner provided in the toolbox, remove the spark plug counterclockwise.
3. And doing the opposite direction, when installing the spark plug. Please use the recommended spark plug, the maximum torque of
18ft-lb (24 Nm)
If the vehicle is submerged
Warning: If the vehicle is submerged in water without careful and comprehensive examination, it may cause serious engine damage,
before starting the vehicle engine please pay in auto inspection.
If you can’t drop off to dealership for inspection, please follow these steps:
1. The vehicle moves to dry land or at least so the water level is below the footwell.
2. Check the air box, clear water; if there is water, replace the filter.
3. Turn off the valve.
4. Remove the spark plugs.
5. Loosen the screws of the carburetor (1).
6. Electric start to start the engine several times.
7. Dry the spark plug, then install or replace the spark plugs.
8. Tighten the screws on the carburetor.
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Summary of Contents for ATV250S
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