GENERAL
The initial installation is very important. Plan it
carefully to ensure maximum operating efficiency.
Use this manual as a general guide. Recommen-
dations are based on extensive tests under favorable
operating conditions. Conform to local, state or
federal codes regulating the installation and opera-
tion of internal combustion engines.
LOCATION
Engine location is determined chiefly by the intended
application. Provide adequate access for service and
repair. Protect the engine from adverse weather.
Consider location of related systems, such as fuel,
exhaust and ientilation.
MOUNTING
Secure the engine to a rigid, level foundation. See
Figures
1
and 2 for typical installations. Foundations
must be sturdy enough to withstand distortion and to
retain alignment with related equipment.
If necessary to exceed 23 degree tilt angle, consult
factory for maximum allowable angle. Compensate
for any tilt when checking crankcase oil.
VENTILATION
Provide sufficient fresh air intake and exhaust ventila-
tion to support combustion and cool the engine and
generator. Avoid recirculation of ventilating air to
prevent engine overheating. See
Specifications
for air
flow requirements and vent sizes.
Locate vents
so
the flow of air from the inlet to the
outlet passes over the engine. The outlet should be
slightly higher than the inlet. Allow for heat produced
by related equipment. See Figures
1
and 2.
An optional air shutter may be used at the outlet vent
to control engine temperature by regulating air flow.
Air shutters also prevent the backflow of cold air
during engine shut-down.
When air ducts are used between the engine and
outlet vent, use a section of canvas to restrict
vibration, as shown in Figure 2.
EXHAUST
WAGIN
ING
Exhaust gas is poisonous. Pipe exhaust gases
u
outside. Exhaust pipes must not terminate
near ventilation system inlet vents.
1.
Avoid sharp bends.
2. Use sweeping, long-radius elbows.
3. Use a section of seamless, flexible tubing
between the engine and any rigid piping to isolate
vibration.
4.
Increase pipes one size for each additional
10-
foot span.
5.
Protect walls and partitions through which ex-
haust pipes pass with a metal thimble, Figure 2.
Install a suitable muffler, preferably as close to the
engine as possible. Pitch exhaust pipes downward, or
provide a condensation trap at the point where a rise
in the exhaust system begins.
.
f
Some installations may require unusually
long exhaust pipes and/or numerous elbows.
A
poor exhaust system will increase back pressure at the engine,
and can cause low engine power with reduced efficiency,
overheating and eventual damage.
To check exhaust back pressure, install a tee or
adapter in exhaust line next to the manifold. Connect
a manometer or pressure gauge to the adapter. If
there is a condensation trap next to the manifold, this
fitting can be used for connecting the manometer.
Permissible maximum back pressure is 27” water
column (2“ mercury) at full load for all models. At no-
load, maximum limit is
5.1”
water column (3/8“
mercury) for the two-cylinder and 4.7“ water column
(1/3” mercury) for the four-cylinder engine. Check at
full load for the best measurement. If the reading is
higher than maximum limit, the exhaust system
should be disassembled and
cleaned or altered to
reduce back pressure.
GASOLINE FUEL
Locate separate fuel tanks no lower than six feet
below the engine fuel pump. Auxiliary fuel pumpsare
,
available to provide an additional six-foot lift.
To
prevent fuel
loss
and fire hazards due to
tziiIl
leaks from line breaks, avoid gravity feed of
fuel to the engine from tanks not mounted on the engine.
WARNING
When sharing a fuel tank, do not connect lines
*
at a point above the fuel supply level to
prevent starving the engine.
Install the fuel supply line from the tank to the 1/8”
pipe inlet in the fuel pump. Use an approved flexible
fuel line at the fuel pump to absorb vibration.
Fuel supply line must be leaktight. Install a shut-off
valve at the fuel tank for service convenience. Run a
vent pipe from the fuel tank to the outside of the
compartment to remove gasoline fumes to the outside
atmosphere.
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6
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