Hisun HS450ATV-4, Руководство пользователя

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8-53 Periodic Maintenance and Adjustment
Sheet 5: Inspection methods / solutions for common problems with the engine.
S/N
Problems
Solutions
1
Engine idle cannot be
adjusted using a computer
1. Check to be sure the throttle cable is NOT seized.
2. Check to see if the ECU is damaged.
2
Unstable of engine idle
speed.
1. Check to see if the battery voltage is lower than the specified value.
2. Check to see if the output voltage of the rectifier when the engine is
idling is lower than the specified value.
3. Check to determine if the EFI has any problems.
2
Engine power reduction
1. Check and see if a cylinder is not working.
2. Check to be sure that an injector is NOT blocked.
3. Check and clean the air filter element.
4. Check to see if the muffler is blocked and clean the spark arrestor.
3
Engine backfires
1. Check to see if there are any air leaks in the air filter or air inlet pipe.
2. Check to see if the connection between the exhaust pipe and engine
or the exhaust pipe and muffler has an air leak.
3. Check to be certain the grade of the gasoline is NOT too low.
4
Engine is hard to start at
lower temperatures.
1. Check to see if the voltage of the battery has gotten lower because of
the lower temperature.
2. If the temperature is below 0º F, move the ATV to a warmer place.
After it warms up it should start.