Begin by locating the auto prime adjustment wheel. It protrudes from the secondary regulator mounted on the generator and is often covered by a red vinyl cap. The adjustment knob is orange and just below the knob is a gold colored washer. To adjust, hold the washer and rotate the orange knob counterclockwise to lean the adjustment. Try this adjustment hot and cold.
In all
Main Mixture
The main mixture is located on the secondary regulator and is a very large brass screw and lock nut.
Begin by loosening the lock nut and counting the turns until the screw just seats. Record this number so that you may return to it later. REMEMBER, the generator DID run previously either at the factory or at the site.
Proceed by disconnecting the generator set’s Auto Prime (if so equipped) by unplugging the terminal on the orange wire.
Check that all fuel supply lines are turned on (where applicable).
Check that he generator’s main line output breaker is turned OFF (where applicable).
The next step is to start the generator. Voltage will be available at the output terminals and anywhere the generator is connected. Think ahead and warn others of your intentions.
Operate the generator with the operation switch in the
While the engine is cranking, turn the main adjustment screw counterclockwise until the engine starts. Continue to rotate back and forth until smooth operation is obtained. [ Adjustments that are too rich (too far counterclockwise) or too lean (too far clockwise) will result in the same rough sound. Use slow, rotating motion to find the smoothest spot.]
Once set, energize the AC breaker and apply available load. Readjust main mixture screw until generator (with or without applied load) is smooth. This will most likely be a slight rotation richer than initial setting at no load.
Shut off engine by placing the Operation Switch into the “OFF” position.
If operation problems persist, contact your dealer or call Baldor Generators for Technical Support at (920)
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