This instruction manual for the Actron Model 620 Tune‑Up Analyzer explains how to safely perform engine tune‑up and charging system tests. It includes safety equipment recommendations, rules for safe automotive testing, and general precautions when working with high‑voltage ignition systems.
The guide details the proper connections of the RED, BLACK, GREEN and INDUCTIVE PICK‑UP clips, and walks the user through RPM measurement, dwell angle checks, voltage and amperage tests, as well as engine timing and idle speed adjustments for a variety of GM, Ford, Chrysler and American Motors vehicles.
| Maximum voltage measurement (POINTS‑LO VOLTS position) | 1.6 V |
|---|---|
| High‑voltage present in ignition coil | 30,000‑50,000 V |
The manual recommends a fire extinguisher, a fire‑proof container for rags, and safety goggles.
Connect the RED clip to the battery positive (+) terminal and the BLACK clip to a secure ground on the engine or frame.
Attach the INDUCTIVE PICK‑UP clamp around a spark plug wire and connect the RED and BLACK leads for power.