Model #24421013 CRAFTSMAN Testers-Gaugers-Meters

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Owner Manual for Sears Penske Dwell-Tachometer 244.21013 24421013 Craftsman Sears dwell tachometer


Thanks for contacting I understand your concern with needing a manual to a portable tach and dwell meter. We are here to help. The owners manual for the tach and dwell meter is no longer available. Also, this meter cannot be used on cars with electronic ignition. It only worked on older cars using points and condensers. When working on today's computerized cars, the technician uses a scanner. The scanner hooks up to a terminal located inside the car under the dash. When using a scanner, the technician can read error codes and clear them. Most cars made after 1989 has a terminal for the scanner. I hope this helps.

Please feel free to let me know if you need further assistance. We are always here to help.

Thank you for using


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John H -
Sears Technician
November 13, 2013