Winco PSS65LS-*/B - Manual (Page 15)

60706-144 Page 13 1017-10
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.
4. Remove the Air Cleaner to expose the top of
carburetor.
5. Remove the six screws holding the top on the
carburetor and remover the air gas valve assembly.
6. Install the new air gas valve assembly part number
98574-700. Replace the top of the carburetor and
tighten all six screws uniformly and reinstall the air
filter.
7. Reconnect the fuel line at the regulator.
8. 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).
9. If the pressure is correct, remove the meter and re-
install 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 re-
test.
10. You are now ready to make the final fuel mixture
adjustment. Refer to adjustment section in this
manual.