When warming up an engine in preparation for compression testing, make sure the
vehicle’s transmission is placed in “Park” (or “Neutral” for a manual transmission)
and the emergency brake is applied.
Prior to using this product, read and adhere to all instructions and safety precau-
tions as outlined in the vehicle manufacturer’s manual and engine diagnostic
manual.
Use extreme care when working around hot or moving engine parts.
Do not exceed the maximum pressure capacity for this tool (300 PSI).
Exceeding
the maximum pressure capacity could cause serious personal injury and/or property
damage. Use only for intended purpose.
Use eye protection.
Always wear ANSI-approved safety impact goggles during use.
WARNING!
The brass components of this product contain lead, a chemical known to the
State of California to cause cancer and birth defects (or other reproductive harm).
(California Health & Safety Code § 25249.5, et seq.)
COMPONENTS
Compression Gauge (1):
Displays cylinder pressure
at cranking speed for an individual cylinder. When the
Gauge is not pressurized, the Gauge Needle may be
anywhere in the zero box without affecting the accuracy
of the Gauge.
M14 x 1.25 Standard Reach Adapter (2):
Connects
the Compression Gauge (1) to a cylinder that has
14mm standard length spark plug threads.
M12 x 1.25 Long Reach Adapter (3):
Connects the
Compression Gauge (1) to a cylinder that has 12mm extra length spark plug threads.
M10 x 1.00 Standard Reach Adapter (4):
Connects the Compression Gauge (1) to a
cylinder that has 10mm standard length spark plug threads.
OPERATION
Attach the proper size Adapter (2, 3, 4) to the Compression Gauge (1) Hose.
Remove the spark plug from one cylinder of the engine, and screw the Adapter into the
spark plug hole. Disable coil to prevent engine from starting.
Crank the engine several times until the highest reading appears on the Compression
Gauge (1). Make note of the reading, then press the Air Release Button on the Com-
pression Gauge to release all compressed air in the tool.
Remove the Adapter from the spark plug hole and re-install the spark plug.
NOTE: Some parts are listed and shown for illustration purposes only, and are not available individually as
replacement parts.
Due to continuing improvements, actual product may differ slightly from the product described herein.
PLEASE READ THE FOLLOWING
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST IN THIS MANUAL AS A REFER-
ENCE TOOL ONLY. NEITHER THE MANUFACTURER OR DISTRIBUTOR MAKES ANY REPRESENTATION OR
WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE
PRODUCT. IN FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND
PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS, AND NOT BY
THE BUYER. THE BUYER ASSUMES ALL RISKS 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.
2.
3.
4.
5.
6.
7.
1.
2.
3.
4.
1.
2.
3.
4.
1
4
3
2
1
4
3
2
SKU 95187
For technical questions, please call 1-800-444-3353
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