F−2058
Page 2 of 6
Waterous Company
OPERATION
WARNING
Maintain correct oil level. Check
oil level each time engine is re-
fueled. Low oil level may cause
loss of engine power and may re-
sult in personal injury or property
damage.
In general, operation of the portable pump con-
sists of making proper connections to the
pump,starting the engine, priming the pump if
necessary, and setting the engine throttle to
achieve desired pump performance.
Connections between the pump and suction
and discharge hoses or piping should be made
leakproof.Wrench torque should be limited to
80 ft. lb. maximum when making connections.
If more than 80 ft. lb. torque is required, use
two wrenches, one wrench on the pump suction
or discharge fitting and one wrench on the hose
or pipe being attached. Balancing the torque
applied between the two wrenches will avoid
excessive forces to the pumping unit.
When pumping units are permanently
mounted in an apparatus and attached to rigid
piping, connections between the pump and the
piping should be made using flexible couplings
to avoid applying excessive forces to the pump.
Refer to Briggs & Stratton OPERATING AND
MAINTENANCE INSTRUCTIONS for start-
ing a cold or warm engine. The PB18 series
pumping engines are equipped with choke lo-
cated under the flywheel side of the air cleaner.
Prime the pump as follows:
1. Advance the throttle to full open with suc-
tion and discharge hoses (or piping) con-
nected.
2. Close the discharge valve if so equipped
and open the priming line petcock at the
suction inlet of the pump body.
3. Pull the lever on the engine exhaust prim-
er/muffler to route the engine exhaust
through the primer.
4. Hold the lever in this position until a
steady stream of water is mixed with the
exhaust coming out of the primer indicat-
ing the pump is primed.
5. Close the priming line pet cock and release
the primer handle.
6. Open the discharge valve if so equipped.
When a PB18 pump is used from draft in below
freezing weather the following shut−down pro-
cedure should be used:
1. When pumping is completed and discharge
hose disconnected, open the priming line
petcock to drain the suction and the prim-
ing line back into the water supply.
2. Disconnect the suction hose. Start the en-
gine and operate the priming ejector until
no more water comes out.
3. Shut the engine down and open the volute
drain.