Briggs & Stratton 86262GS, Familiarization & Troubleshooting Manual

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Section 3 • Generator Diagnostics and Adjustments
Portable Generator Familiarization & Troubleshooting Guide
Adjustment at “No Load” Frequency
Check that all springs and linkages are properly installed.The
capscrews that retain the solenoid mounting brackets to the
fuel tank heat shield must be tight.Then connect an (AC)
frequency meter into one of the generator’s (AC) output
recepticals.
• Set the idle control switch to OFF .
• Unplug all electrical loads.
Initial settings will be accomplished at “no-load.”
• Start the engine, let it stabilize and warm up.
• Check the “no-load” (AC) frequency.
Meter should read about 62.0-62.5 Hertz (on 60 Hertz
units) or 51.0-51.5 Hertz (on 50 Hertz units).
If necessary:
• Adjust the “no-load” frequency adjustment screw to
obtain the correct (AC) frequency
(See Figure 3.11).
Adjustments at “Rated Load” Frequency
NOTE:
The “Rated Load” frequency adjustments
should only be done after successfully completing the
“No Load” adjustments.
Refer to Figure 3.12. Perform steps with the engine running
at its correct “no-load” frequency.
Then proceed as follows:
• Apply an electrical load to the generator equal to the
unit’s rated wattage/amperage capacity.
If engine frequency “droops” below 57 Hertz
(on 60 Hertz units) or 48 Hertz (on 50 Hertz units):
• Disconnect the load.
• Bend the throttle restrictor tang about 1/16 inch
toward the “decrease” side.
• Re-adjust the “no-load” frequency adjust screw to
obtain 62.0-62.5 Hertz (on 60 Hertz units); or
51.0-51.5 Hertz (on 50 Hertz units).
• Re-apply the electrical load.
• Check frequency droop against the values stated.
If frequency droops below the stated values, repeat the
adjustment procedures mentioned. Be careful not to bend
the throttle restrictor tang more than 1/16 inch each time.
Complete this adjustment to your satisfaction before
proceeding to the “Low Idle Frequency Adjustment.”
Figure 3.11 — No Load Frequency Adjustment Screw
Figure 3.12 — Throttle Restrictor Tang