Specications
Max. Working
Pressure
Pressure
Gauge Scale
300 PSI
0~300 PSI (In 10
PSI Increments)
0~2000 kPa (In 100
kPa Increments)
Important Safety Information
1. Do not exceed max. 300 PSI air
pressure during use. Exceeding max.
air pressure could cause serious
personal injury and property damage.
2. Use extreme care when working
around hot or moving engine parts.
3. Verify vehicle’s transmission is
placed in Park (or Neutral for a
manual transmission) and the
emergency brake is applied.
4. Do not change ttings
with engine running.
5. Do not drive the vehicle
while under test.
6. Before testing, review and follow
instructions from the vehicle
manufacturer’s service manual.
7. After testing, turn engine off and
depressurize system before removing
test components. Place absorbing
cloths around ttings before
disconnecting. Wipe up any spilled fuel.
Place cloths in a reproof container.
8. Clean all testing components of
residual fuel before storing.
9. Wear ANSI-approved safety
goggles and heavy-duty work
gloves during assembly.
10. This product is not a toy. Do not allow
children to play with or near this item.
11. Use as intended only.
12. Inspect before every use; do not
use if parts are loose or damaged.
13. WARNING! The vehicle engine
must never be started in a closed
garage, or any other sealed structure.
Carbon monoxide is produced during
operation and is deadly in a closed
environment. Early signs of carbon
monoxide poisoning resemble the
u, with headaches, dizziness, or
nausea. If you have any of these
signs get fresh air immediately.
14. 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.)
15. Maintain product labels and
nameplates. These carry important
safety information. If unreadable
or missing, contact Harbor Freight
Tools for a replacement.
Operating Instructions
Read the ENTIRE IMPORTANT
SAFETY INFORMATION
section at the beginning of
this document including
all text under subheadings
therein before set up or
use of this product.
1. Attach proper size Adapter (2, 3, 4) to
Gauge (1) Hose.
Use Standard Reach Adapter (2) to
connect Gauge (1) to cylinder with
14mm standard length spark plug
threads.
Page 2 For technical questions, please call 1-888-866-5797. Item 95187
Use Long Reach Adapter (3) to
connect Gauge to a cylinder with 12mm
standard length spark plug threads.
Use Standard Reach Adapter (4) to
connect Gauge to a cylinder with 10mm
standard length spark plug threads.
2. Remove spark plug from one cylinder
of the engine, and screw Adapter
into spark plug hole. Disable coil
to prevent engine from starting.
3. Turn on and Crank engine several
times until highest reading appears on
Compression Gauge (1). Make note
of reading, then press Air Release
Button on Compression Gauge to
release all compressed air in tool.
4. Turn off engine and remove Adapter
from spark plug hole and re-install
spark plug.
NOTE: When Gauge is not
pressurized, the Gauge needle may
be anywhere from in the zero box
without affecting accuracy of Gauge.
Maintenance and Servicing
1. BEFORE EACH USE, inspect the
general condition of the Tester. Check
for loose attachments, cracked or
broken parts, and any other condition
that may affect its safe operation. If
any abnormality is found, have the
problem corrected before further use.
2. AFTER EACH USE, wipe off
Tester with clean, moist cloth.
3. Lubricate attachments regularly to
ensure smooth operation.
Limited 90 Day Warranty
Harbor Freight Tools Co. makes every effort to assure that its products meet
high quality and durability standards, and warrants to the original purchaser that this
product is free from defects in materials and workmanship for the period of 90 days
from the date of purchase. This warranty does not apply to damage due directly or
indirectly, to misuse, abuse, negligence or accidents, repairs or alterations outside
our facilities, criminal activity, improper installation, normal wear and tear, or to lack of
maintenance. We shall in no event be 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 of incidental or
consequential damages, so the above limitation of exclusion may not apply to you. THIS
WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR
IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to
us with transportation charges prepaid. Proof of purchase date and an explanation
of the complaint must accompany the merchandise. If our inspection veries
the defect, we will either repair or replace the product at our election or we may
elect to refund the purchase price if we cannot readily and quickly provide you
with a replacement. We will return repaired products at our expense, but if we
determine there is no defect, or that the defect resulted from causes not within the
scope of our warranty, then you must bear the cost of returning the product.
This warranty gives you specic legal rights and you may also have other rights
which vary from state to state. you may also have other rights which vary from state to to state.
Page 3For technical questions, please call 1-888-866-5797.Item 95187
Parts List and Diagram
Part Description Qty
1 Compression Gauge 1
2 Standard Reach Adapter
(M14 x 1.25)
1
Record Serial Number Here:
Part Description Qty
3 Long Reach Adapter
1
(M12 x 1.25)
4 Standard Reach Adapter
(M10 x 1.00)
4
3
2
1
1
Note: If product has no serial number, record month and year of purchase instead.
PLEASE READ THE FOLLOWING CAREFULLY
NEITHER THE MANUFACTURER OR DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY
KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT, OR 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 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.
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 444-3353
Page 4 For technical questions, please call 1-888-866-5797. Item 95187
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