Idle Microswitch
- Warm engine to normal operating temperature. Disconnect microswitch coupler and connect ohmmeter to idle microswitch terminals. See Fig 1
- Run engine at idle and make sure ohmmeter indicator is at zero. Connect tachometer to engine. Increase engine speed gradually, checking that ohmmeter indicates infinity when engine speed is 1500-2400 RPM.
- If engine speed is not within specified range, adjust idle microswitch lever. See Fig 2 lever down if engine speed is below range, and bend up if engine speed is above range.