500 cubs smoked, and then the bottle turned black.

The solution to the black bottle after the smoke of the 500-seat cub is as follows:

Check whether the oil pump is normal. The oil circuit inspection is also normal. Considering the problem of ignition system, a treasure bought the high-voltage package of spark plug (original NGK, CR8E model) and replaced it. After locking the fault point, the intake pipe was inspected, and it was found that the pipeline from the carbon canister solenoid valve to the throttle valve leaked, which led to air entering the intake manifold, and the mixture was too thin, making it difficult to start. The problem was solved after replacement. In order to ensure the full contact of clutch friction plates, the original clutch used a spring with great elasticity, which caused the clutch to feel heavy. After changing the drum, the clutch friction plate is soaked in oil for a period of time before changing it. Do it.