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CEN-TECH 40963 - User Manual

CEN-TECH 40963
16 pages
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TIMING LIGHT
40963
SET UP AND OPERATING INSTRUCTIONS
Visit our website at: http://www.harborfreight.com
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Copyright
©
2007 by Harbor Freight Tools
®
. All rights reserved. No portion of this manual or any artwork
contained herein may be reproduced in any shape or form without the express written consent of
Harbor Freight Tools. Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein. Tools required for
assembly and service may not be included.
For technical questions or replacement parts, please call 1-800-444-3353.
REV 07h; Manual Revised 09g

Questions and Answers

  • T
    tapiajayJul 30, 2025
    What to do if CEN-TECH 40963 Tools have no flash?
    • A
      Angela RobinsonJul 30, 2025
      If your CEN-TECH Tools have no flash, it might be due to several reasons. First, ensure the switch is in the “ON” position. If it is, check the battery clips to make sure they are connected correctly. If the clips are connected backward, reverse the battery clip connections. Finally, a poor connection of clips can also cause this issue; clean the battery post and reconnect.
  • E
    Elizabeth CarrollAug 9, 2025
    What to do if CEN-TECH 40963 Tools have no flash but the double check indicator is “ON”?
    • A
      Alec NewmanAug 9, 2025
      If the double check indicator is “ON” but there's no flash in your CEN-TECH Tools, consider these possibilities: 1. The Spark Plug Clamp might be flipped backward. Ensure the arrow on the clamp points to the #1 plug. 2. There could be a weak ignition or spark plug. Try connecting to other plugs or spark plug wires and repair the gap. 3. A faulty lamp could also be the cause. Replace the faulty lamp.
  • C
    Christine CampbellAug 19, 2025
    Why does CEN-TECH 40963 Tools light flash intermittently?
    • A
      Andrea HouseAug 19, 2025
      The intermittent flashing of the CEN-TECH Tools light could be due to the Timing Light Spark Plug Clamp wire lying on, or near to, the other spark plug wires. To resolve this, route the Spark Plug Clamp wire away from the other spark plug wires.

Summary

Important Safety Information

General Safety Rules

General safety rules to prevent injury, fire, and electric shock.

Specific Safety Rules

Specific Safety Precautions

Safety rules specific to the product, including label maintenance, pacemakers, and lead warnings.

Operating Instructions

Timing Light Hook Up

Illustrates and describes the connection procedure for the timing light.

Timing Adjustment

Testing Centrifugal Advance

Testing Vacuum Advance

Maintenance and Servicing

Troubleshooting

CEN-TECH 40963 Specifications

General IconGeneral
BrandCEN-TECH
Model40963
CategoryTools
LanguageEnglish

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