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SKU 94190

For technical questions, please call 1-800-444-3353.

7.

Use eye and ear protection.  Always wear ANSI-approved impact safety

goggles when working on gasoline engines. Be sure to work in a well
ventilated place, or pipe exhaust gasses to the outdoors. Carbon Monoxide
Warning:
 Guard against exposure to Carbon Monoxide, which is an odorless,
colorless gas produced by gasoline engines. Carbon Monoxide exposure may
cause serious injury or death.

8.

Do not overreach.  Keep proper footing and balance at all times. Do not

reach over or across running machines.

9.

Maintain tools with care.  Keep tester threads sharp and clean for better

and safer performance. Follow instructions for lubricating and changing
accessories. The gauge hose and adapters must be kept clean, dry, and free
from oil and grease at all times.

10. Stay alert.  Watch what you are doing, use common sense. Do not operate

any tool when you are tired.

11. Check for damaged parts.  Before using any tool, any part that appears

damaged should be carefully checked to determine that it will operate
properly and perform its intended function. Any part that is damaged should be
properly repaired or replaced by a qualified technician.

12. Replacement parts and accessories.  When servicing, use only identical

replacement parts. Use of any other parts will void the warranty.

13. Do not operate tool if under the influence of alcohol or drugs.  Read

warning labels on prescriptions to determine if your judgment or reflexes are
impaired while taking drugs. If there is any doubt, do not operate the tool.

14. Maintenance.  For your safety, service and maintenance should be performed

regularly by a qualified technician.

WARNING:  The brass components of this product contain lead, a chemical
known to the State of California to cause birth defects (or other reproductive
harm). (California Health & Safety code 25249.5, 

et seq.

)

WARNING: The warnings, cautions, and instructions discussed in this instruc-
tion manual cannot cover all possible conditions and situations that may oc-
cur. It must be understood by the operator that common sense and caution
are factors which cannot be built into this product, but must be supplied by
the operator.

Summary of Contents for 94190

Page 1: ...y 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...

Page 2: ...dren must never be allowed in the work area Do not let them handle machines tools or extension cords 4 Store idle equipment When not in use tools must be stored in a dry location to inhibit rust Alway...

Page 3: ...amaged should be carefully checked to determine that it will operate properly and perform its intended function Any part that is damaged should be properly repaired or replaced by a qualified technici...

Page 4: ...ion Pressurized air is supplied to each cylinder and the rate of leakage is measured in percent loss from 0 to 100 The operator may also locate the source of the compression loss by listening at these...

Page 5: ...eadings Take several readings and average the results for a recorded reading for each cylinder 5 Diagnosing an engine problem with this tool involves using a listening device not included A length of...

Page 6: ...V hose If the engine has a carburetor remove the air cleaner and open the throttle all the way If the engine is fuel injected remove the air cleaner or open the throttle body 4 Position the cylinder t...

Page 7: ...adjacent cylinders will show the same problem 3 Adjacent cylinder indicates a damaged head gasket 4 Tail pipe indicates burned stuck or worn exhaust valve 5 Carburetor or fuel injector intake indicate...

Page 8: ...liable for death injuries to persons or property or for incidental contingent special or consequential damages arising from the use of our product Some states do not allow the exclusion or limitation...

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