Briggs & Stratton 86262GS Familiarization & Troubleshooting Manual page 64

NOTE:
To get an accurate measurement, you may
need to keep turning the idle control switch on
and off in order to keep the stepper motor
moving.
Test 5:
— Check Idle Stepper Motor
• Disconnect the stepper motor harness from the idle
control board.
• Set a VOM to its ohm scale.
Refer to Figure 3.7.
Figure 3.7 — Checking Stepper Motor
• Connect one VOM test lead to the connector pin on
the stepper motor harness to which the RED wire
attaches.
Connect the other VOM test lead as follows:
• To the ORANGE wire connector pin.
Approximately 10 ohms.
• To the YELLOW wire connector pin.
Approximately 10 ohms.
Portable Generator Familiarization & Troubleshooting Guide
Section 3 • Generator Diagnostics and Adjustments
• To the BROWN wire connector pin.
Approximately 10 ohms.
• To the BLACK wire connector pin.
Approximately 10 ohms.
When connecting the VOM to any pin in the stepper motor
harness and the stepper motor housing (ground), the VOM
should read "infinity."
• If any reading other than listed is noted, replace the
stepper motor and harness as an assembly.
Early Idle Control Adjustment
(Except V-Twin Engine)
NOTE:
The following carburetor adjustment
procedures apply to most early Briggs & Stratton
engines. For other engine makes, comply with the
engine manufacturer's instructions.
These initial adjustments will allow the engine to get started
and warmed up.
Before starting the engine:
• Gently turn the idle mixture valve and needle valve
(Figure 3.8) clockwise until they just bottom.
Do not force or valves will be damaged!
• Open the needle valve one and one half turns
counterclockwise and the idle mixture valve one turn
counterclockwise.
Figure 3.8 — Carburetor Adjustment
62