Phase One - OTC LeakMaster 6525 Manuel De L'opérateur

1. Verify the vehicle's fuel level is below the base of
the fuel tank neck.
2. Determine if the vehicle's EVAP system is governed
by a .040 or .020 acceptable leak standard.
3. Position the selector valve on the tester control
panel to the correct standard. See Figure 3.
The "future" setting on the control valve is
reserved for another standard, should requirements
change.
4. Turn the tester ON by pressing the remote starter
button. Observe the flow meter's indicator ball.
Position the flow meter's red flag so it aligns with
the ball. See Figure 4.
This measurement indicates the vehicle's
Pass / Fail line.
5. Press the remote starter button again to turn the
tester OFF.
6. Locate the vehicle EVAP service port. Remove the
green cap and the Schrader valve that is located
inside the service port. See Figure 5.
IMPORTANT: The Schrader valve is installed
with a left-hand thread.
7. Install the EVAP service port adapter (provided
with the tester) into the EVAP service port.
Tech Tips
The EVAP service port on OBD-II vehicles
was designed with a Schrader valve before
this smoke-producing test procedure was
developed for diagnosing EVAP leaks.
Smoke, when passed through a Schrader
valve, will partially condense. It will not be
dense enough to be effective for EVAP leak
diagnosis.
For this reason, when testing with smoke,
remove t h e S c h r a d e r v a l v e before
introducing smoke into the EVAP system.
Remember to turn the Schrader valve
in a clockwise rotation to remove it.

Phase One

Figure 3
Fail
Pass
Figure 4
Figure 5
Turn the
Schrader valve
clockwise to
remove it.
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