Engine Adjustment - Briggs & Stratton 01810-0 Installation And Start-Up Manual

Engine Adjustment

There are regional variances in the composition of natural
gas. Each HSG unit is adjusted at the factory for NG
operation. If the generator output voltage or frequency
measured during initial Start-Up (paragraph #9 on page 12)
is outside the listed ranges, the combustibility of the gas
supplied at the installation site may be substantially different.
To adjust the engine for this difference, proceed as follows.
1. Remove the Air Intake and Control Panel access doors.
2. Remove the three M5 sheet metal screws that hold
the control panel wiring cover to the air intake guard
(Figure 13).
Figure 13 — Accessing Back of Control Panel
3. Connect an accurate frequency meter to the load side
of the main circuit breaker (on the back of the control
panel).
4. Ensure that the 15 Amp fuse is installed.
5. Set the generator's main circuit breaker ON.
6. Set the AUTO/OFF/MANUAL switch to MANUAL.
When the engine starts, allow it to warm up for two
minutes.
Briggs & Stratton Power Products Home Generator
Installation Manual
7. Normal no load frequency is 62.0 to 62.5 Hz. If
adjustment is needed at no load, slowly rotate the
governor adjustment nut (Figure 14) clockwise and/or
counterclockwise until frequency is 62.0 to 62.5 Hz.
Figure 14 — Governor Adjustment Nut
Governor
Adjustment Nut
8. Turn the service disconnect to the transfer switch off.
The transfer switch will connect to the generator after
a short time delay.
9. Load generator to rated Natural Gas rating.
10. Connect an accurate frequency meter to the load side
of the main circuit breaker (on the back of the control
panel). Frequency should be above 57.0 Hz.
11. If frequency is below 57.0 Hz, slowly rotate the
governor adjustment nut clockwise and/or
counterclockwise until frequency is above 57.0 Hz.
12. Turn the service disconnect to the transfer switch on.
The transfer switch will connect to the utility after a
short time delay.
13. Set the AUTO/OFF/MANUAL switch to OFF.
14. After the engine has stopped running, reinstall the
control panel wiring cover to the air intake guard.
15. Reinstall the air intake and control panel access doors.
16. Set the AUTO/OFF/MANUAL switch to AUTO.
13