Tech Tips

Two of the most common problems encountered with generator sets are the engine won’t start or the generator will not produce electricity.

 Stale Fuel

 When a piece of equipment sets for a period of time with gasoline in its’ tank, the gas will become stale. Fuel storage life is only 30 days. This condition occurs when some of the chemicals in the gas evaporate and reduce its ability to ignite. If all the liquid evaporates a varnish like residue will result. Either condition will create a problem with starting.

To remedy the problem first remove the old fuel from the fuel tank.

1. Disconnect the fuel line from the carburetor and drain the old fuel into a can. Put a little new fuel in the tank and let it run out to flush any remaining fuel. Do not reconnect the fuel line at this time.
2. Remove the fuel bowl from the carburetor and remove any dirt or varnish. Be careful not to damage the bowl gasket that usually will remain on the carburetor.
3. Reconnect the fuel line and put a little fuel in the tank. Fuel should run out of the needle and seat and stop when lightly pushed up on the float. If fuel does not flow out of the carburetor or the float does not move, the carburetor will have to be removed and rebuilt. If the float moves and stops the fuel reinstall the bowl.
4. Put new clean fuel in the tank and start the unit. Let the engine run and put a load on the generator. Use a fuel stabilizer to increase the storage life of the fuel and minimize varnish build up.

No output

 Generator output is a bit more difficult to remedy. The problem can stem from a defective part, a rodent problem or loss of residual magnetism. Look the generator over for obvious problems. A defective part can be diagnosed by using trouble shooting procedures from the service manual. Manuals can be purchased from Generator Specialist. Mice, rats and chipmunks like to chew wires. If insulation is chewed off a wire the damaged sections should be replaced. Residual magnetism can be restored by following procedures outlined in the service manual.  This procedure varies from one generator to another. It should be performed by and experienced technician. High voltage is present during the procedure and a person could get shocked or damage the generator.  It may be more economical to have a qualified generator technician repair the generator than replacing a part at a time.

 Generator exercising

 Exercising a standby generator is very important. It instills confidence in the equipment, lubricates the internal parts of the engine and evaporates moisture in the engine and generator. The generator should be exercised during a time when it will be heard. That way if it does not run it will be noticed. The exercise period should be (½) one half hour per week or as the manufacture recommends. Another question asked is should it be run under load. Exercising the complete system including the transfer switch is recommended. A generator can start, run and produce voltage but if the transfer switch does not transfer the load when needed your system has failed. There are many situations that call for different actions. If you need assistance or have a question call Mike Krake @ 330.549.5393 or email mkrake@zoominternet.net