General Information
Section 3
3.1 — K
Y
NOW
OUR WATER PUMP
Read this owner's manual and safety rules before operat-
ing your water pump. If you loan this device to someone,
ALWAYS loan these instructions AND the owner's man-
ual to the individual as well. Compare the illustrations
with your water pump to familiarize yourself with the loca-
tions of various controls (Figure 3-1). Save this manual
for future reference. Replacement owner's manuals can
be printed from the Generac Web site.
A - Lifting Handle - Used to lift the water pump.
B - Discharge Port - Location to attach discharge hose.
C - Suction Port - Location to attach suction hose.
D - Water Drain Plug - Used to empty the water pump
after use.
E - Oil Fill - Check and add engine oil
F - Oil Drain Plug - Used to drain engine oil.
G - Muffler - Where hot exhaust gas exits the water
pump.
H - Fuel Tank - Fill tank with regular unleaded fuel.
Always leave room for fuel expansion.
I
- Choke - Prepares a cold engine for starting.
J - Air Filter - Protects engine by filtering dust and
debris out of the intake air.
G
Water Pump
H
J I
P
A
O
Figure 3-1. ST20 Features and Controls
K - Recoil Starter - Used for starting the engine.
L - Engine ON/OFF Switch - Turn switch to ON before
using recoil starter. Turn switch to Off to stop engine.
M - Priming Cap - Remove cap and fill the pump with
water before starting the unit.
N - Fuel Gauge - Indicates the amount of fuel remaining
in the fuel tank.
O - Fuel On/Off Valve - Turns fuel supply to the engine
on and off.
P - Throttle Lever - Increases or decreases engine
speed.
Q - Serial number location
R - Blue Discharge Hose - Used to discharge water
from the pump
S - Hose Clamps - Secure the hose to the hose barbs
and the filter
T - Hose Nut - Secures the hose barb to the pump
U - Hose Barb - Holds the hose to the pump
V - Sealing Ring - Prevents leaking
W - Green Suction Hose - Used to bring water into the
pump
X - Filter Attachment - Used to connect filter basket to
the suction hose.
Y - Filter Basket - Used to keep debris out of the pump.
K
L
E
F
N
M
B
C
Q
D
7