Briggs & Stratton 86262GS Familiarization & Troubleshooting Manual page 68

GN-190, 220, 320 , 360 & 410
Engine Idle Control
Idle speed adjustments consist of first adjusting the position
of the idle control solenoid to maintain approximately
40-45 Hertz (2100 rpm).
Adjustment Procedure
• Set the idle control switch to OFF.
• Unplug all electrical loads from the generator set.
• Connect an (AC) frequency meter into one of the
generator's (AC) output receptacles
• Crank and start the engine as outlined in the
appropriate owner's manual.
The engine should start and accelerate to high governed
speed. Let the engine stabilize and warm up for a few
moments.
• Check the frequency meter reading:
For units rated at 60 Hertz: Meter should read
About 61.5-63.5 Hertz (3690-3810 rpm).
For units rated at 50 Hertz: Meter should read
About 50.5-51.5 Hertz (3030-3090 rpm).
• Set the idle control switch to ON.
The idle control solenoid should energize to pull the
governor lever in and engine should decelerate to idle
speed.
• Check the frequency meter reading.
Meter should indicate 40-45 Hertz (2100-2400 rpm).
If idle speed is not within the stated range:
Adjust the idle control solenoid (Figure 3.15).
Portable Generator Familiarization & Troubleshooting Guide
Section 3 • Generator Diagnostics and Adjustments
Figure 3.15 — Idle Control Solenoid
• Loosen the solenoid jam nut, then turn the solenoid
bolt clockwise (faster speed) or counterclockwise
(slower speed).
When engine is idling at 40-45 Hertz (2400-2700 rpm):
• Hold that setting and tighten the jam nut against the
solenoid bracket.
With solenoid jam nut tightened:
• Check that engine speed is still 40-45 Hertz
(2400-2700 rpm).
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