Use and Care Manual

Water Pump 7
3.1 — KNOW YOUR 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.
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.
Figure 3-1. ST20 Features and Controls
H
G
OAPJI
K
L
F
E
D
C
B
M
N
Q
Section 3 General Information