*INDICATES EQUIVALENT
OF
WATER LEVEL DIF-
FERENCE IN OUNCES
GAS
FUEL
OUT
A
MANOMETER
REGULATOR
FIGURE
28.
WATER MANOMETER
FIGURE
294
ALGAS GAS REGULATOR
inward until the hissing of escaping gas at the outlet
stops. Install a water manometer on the inlet side of
the regulator to make the fine adjustment. With the
gas on, cover the regulator outlet for a few seconds
and then open. If the regulator is leaking, the pressure
shown on the manometer will drop slightly or waver,
indicating that the valve is opening. Turn the screw
inward slightly and repeat the test. Continue until the
manometer holds steady as the outlet is closed for a
few seconds and then opened.
If the regulator doesn’t deliver fuel, check the inlet
pressure. If pressure is over
5
psi
(1
psi with optional
solenoid valve) a primary regulator is required to
reduce the inlet pressure. If the inlet pressure is within
the required limits and the regulatorwon’t deliverfuel
or leaks, disassemble
it
for
repair.
\
~
DSETOC
RBURETOR
-
LGARREGN
GAS
REGULATOR
FIGURE
30.
ADJUSTING GAS REGULATOR
To disassemble the regulator, carefully remove the
cover and separate the diaphragm from the cover and
body. A kit is available from ONAN to repair the
reg u
I
ato r.
If this regulator appears defective; won’t oPen, won’t
close, or delivers-hsutficient fuel, check the shut off
pressure adjustment. A kit is available from ONAN to
replace both the diaphragm and valve.
Solenoid
Primer (Algas Regulator
Only): Algas
regulators use an optional solenoid primer to provide
quick engine starting. The primer [(Figure
31)
holds
the regulator open during engine cranking.
It
can be
adjusted for a rich or lean mixture by loosening the
lock nut and turning the primer
in
ourout.Turning the
primer clockwise richens the mixture.
27
Redistribution or publication of this document,
by any means, is strictly prohibited.
To Next Page
Loading...
Need help?
General
