Servo Assembly Test
- Disconnect ball chain from carburetor (if equipped). Separate 8-way connector at amplifier, then connect an ohmmeter between Orange/Yellow wire and Gray/Black wire at connector. A resistance of 40-125 ohms should be obtained.
- Connect ohmmeter between Orange/Yellow wire and White/Pink wire at connector. A resistance of about 60-90 ohms should be obtained. Reconnect ball chain to carburetor (if equipped). Start engine with servo-to-amplifier connector disconnected. Verify that engine vacuum exceeds 2.5 in. Hg (85 kpa).
- Connect Orange/Yellow wire of servo to battery positive terminal. Connect White/Pink wire to ground and momentarily touch Gray/Black wire of servo to ground. Servo throttle actuator should tighten bead chain or actuator cable and open throttle.
- Throttle should remain in that position (or SLOWLY release tension). When White/Pink wire is removed from ground, servo should release tension immediately. If servo fails any of the preceding tests, replace servo.
CAUTION:
If Orange/Yellow wire is shorted to either White/Pink wire or Gray/Black dashed wire, it may cause damage to amplifier.