. 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. For technical questions or replacement parts, please call 1-800-444-3353.
When unpacking, check to make sure all the parts shown on the Parts Lists on page 8 are included. If any parts are missing or broken, please call Harbor Freight Tools at the number shown on the cover of this manual as soon as possible.
Use only accessories that are recommended by the manufacturer for your model. Accessories that may be suitable for one tool may become hazardous when used on another tool. SKU 92720 For technical questions please call 1-800-444-3353 PAGE 3...
Maintain labels and nameplates on the Compression Tester. These carry important information. If unreadable or missing, contact Harbor Freight Tools for a replacement. Prior to using the Compression Tester, make sure to read and understand all warnings, safety precautions, and instructions as outlined in the manufacturer’s instruction manual for the engine you will test.
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Make note of which spark plug wires go to each spark plug locations. (See Figures B and C, next page.) GAUGE HOSE FITTING AIR RELEASE BUTTON ADAPTER FITTING HOSE FIGURE A RUBBER CONE SKU 92720 For technical questions please call 1-800-444-3353 PAGE 5...
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10%. Note: Check your owner’s or maintenance manual for acceptable pressure ranges. COIL COIL WIRES FIGURE B GAUGE REMOVE AIR RELEASE BUTTON SPARK PLUGS FIGURE C SKU 92720 For technical questions please call 1-800-444-3353 PAGE 6...
ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO. SKU 92720 For technical questions please call 1-800-444-3353 PAGE 7...
Hose Fitting Adapter Fitting Carrying Case Hose 5: CARRYING CASE NOT SHOWN. NOTE: Some parts are listed and shown for illustration purposes only, and are not available individually as replacement parts. SKU 92720 For technical questions please call 1-800-444-3353 PAGE 8...