Product manual

Page 3
For technical questions, please call 1-800-444-3353.
Item 69885
Instructions
Read the
ENTIRE
IMPORTANT SAFETY INFORMATION
section at the
beginning of this document before set up or use of this product.
NOTE:
Performing a compression test requires the work of
two
individuals;
one person to operate the vehicle’s ignition switch while the
other person operates the Compression Tester.
1.
Prepare the engine for compression
testing by starting the engine
and allowing it to warm up to its
normal operating
temperature.
Then,
Then,
switch
off
the
ignition
ignition
.
WARNING!
A
void
AvoidA
carbon
monoxide
poisoning! Never run
a gasoline engine in an enclosed
garage or other contained area.
2.
Once the engine has been
turned off, disconnect both coil
wires from the coil of
the
engine.
Insulate
coil
wires
or
route them away
from each other and all metal surfaces.
3.
Remove all of the spark plugs.
Make
note of which spark plug wires
go to each spark plug locations.
4.
Attach either the Adapter Fitting or
Hose and Hose Fitting to the Gauge.
5.
Connect the Compression Tester
to the first cylinder of the engine.
With the gas
pedal pressed all
the way down, crank the engine
for at least eight revolutions.
6.
While cranking the engine,
observe the
Gauge.
Record
the
maximum reading.
7.
After recording the maximum reading,
stop cranking the engine. Then,
release
the air pressure in the Gauge by
pressing the Air Release Button.
8.
Remove the Compression Tester
from the first engine cylinder.
Then
repeat Steps #5,
#6,
and
#7
for the remaining engine cylinders.
NOTE:
Good engine cylinder compression
will be indicated with a high initial reading,
and a progressive build-up to the final
maximum reading. Poor
engine cylinder
compression will be indicated with a
low initial reading, and a much slower
build-up to the final maximum
reading.
The
compression readings for all of
the engine cylinders should not vary
by
more
than
10%. Check service
manual for acceptable pressure ranges.
Parts List
Part
Description
1
Gauge
Gauge
2
Hose
3
Angled Adapter Fitting
Angled Adapter Fitting
4
Straight Adapter Fitting
Straight Adapter Fitting
5
M18 Hose Fitting
M18 Hose Fitting
6
M14 Hose Fitting
M14 Hose Fitting
7
M12 Hose Fitting
M12 Hose Fitting
8
M10 Hose Fitting
M10 Hose Fitting
Record Serial Number Here:
Note:
If product has no serial number,
If product has no serial number,
record month and year of purchase instead.
Note:
Some parts are listed for illustration
Some parts are listed for illustration
purposes only, and are not available
individually as replacement parts.