| Cause Analysis | Method of exclusion |
| Mixed gas is too thick or too thin | Check and adjust the mixture screw |
| Throttle linkage imbalance | To adjust the throttle cable |
| The tubing is twisted, flattening or leakage | Finishing the tubing, if the rupture is replaced with new products |
| Fuel filter clogging | Clean or replace the fuel filter |
| Carburetor oil blockage | Clean and blow through the oil channel with compressed air. |
Fuel storage time is too long or the fuel contains impurities and moisture | Clean the fuel tank and fill the fuel tank with fresh fuel. |
| Did not use the recommended brand of oil | For the manufacturer's recommended grades of outboard engine oil |
| Do not unscrew the vent screw cap | Counterclockwise unscrew the screw cap the tank ventilation |
| The choke is pulled pull rod | The pull rod is pushed back the original position of solar term open all doors |
| Tubing plug connection loose | Re insert the head, make it a reliable connection |
| Fuel pump failure | To repair or replace a new fuel pump |
