Winco PSS70000 - Manual (Page 14)

Page 12 60541 60706-124
PROPANE VAPOR TO NATURAL GAS
1. Turn off fuel supply.
2. Remove the fuel line from the carburetor at the demand
regulator.
3. Invert the regulator so the column is in the upright position.
Remove the cap on the upright column of the regulator. This will
expose the pressure spring adjusting screw. Turn the screw all
the way out (CCW) and then back in (CW) about 8 turns. The
plug should be approximately half way down for initial starting.
5. Reconnect the fuel line at the regulator.
6. Remove the 1/8 NPT plug (the one closest to fuel solenoid)
located on what is now the bottom of the regulator. Connect a
fuel pressure meter or a monometer where the plug has been
removed. Move the generator control switch to the "run" position.
As the unit starts to crank the fuel solenoid will open and you
should get a pressure reading of between 4 to 6 ounces (7 to 11
inches of water column).
7. If the pressure is correct, remove the meter and reinstall the
pipe plug. Next remove the 1/8 inch NPT plug on the carburetor
side of the regulator and install the pressure meter. Move the
generator switch to the run position. As soon as the solenoid
opens the pressure should rise to 2.5 to 3 oz. just as the engine
starts to crank. If it is within this range replace the cap on the
column. If not, adjust the screw down to increase and up to
decrease and retest.
8. You are now ready to make the final fuel mixture adjustment.
Refer to adjustment section in this manual.