Briggs & Stratton 203721GS - Manual (Page 9)

9
Features and Controls
Read this Operator’s Manual and safety rules before operating your air compressor.
Compare the illustrations with your air compressor, to familiarize yourself with the locations of various controls and
adjustments. Save this manual for future reference.
A - Fuel Shutoff Valve — Used to turn fuel supply on and
off to engine.
B - Engine Oil Fill — Check and add engine oil here.
C - Drain Valves — Valves are located near bottom of each
air tank and are used to drain condensation.
D - Choke Lever — Prepares a cold engine for starting.
E - Air Cleaner — Protects engine by filtering dust and
debris out of intake air.
F - Recoil Starter — Used for starting the engine manually.
G - Safety Valve — Valve protects against excessive tank
pressure by ‘popping out’ at its factory setting, thus
relieving pressure.
H - Tank Pressure Gauge — Gauge indicates air pressure
within air tanks.
J - Pressure Control — Controls air pressure delivered to
quick connect fittings; can be secured with locking ring.
K - Outlet Pressure Gauge — Indicates air pressure at quick
connect fitting.
L - Quick Connect Fittings — Connect air tools here.
M - Pump Oil Sight Glass — View pump oil level here.
N - Fuel Tank — Fill tank with regular unleaded fuel. Always
leave room for fuel expansion.
P - On/Off Switch — Set this switch to “On” before using
recoil starter. Set switch to “Off” to stop a running
engine.
Q - Air Compressor Pump — Pump compresses air into tank.
R - Compressor Oil Fill Location — Fill pump with oil here.
Oil level sight glass indicates pump oil level.
S - Start Valve — Open start valve when starting engine.
After engine has been running 1-2 minutes close
start valve.
T - Check Valve — When unit is operating, check valve is
open, allowing air to enter tank. At “cut-out” pressure,
check valve closes, preventing air from flowing back into
pump. Valve is not adjustable or serviceable by user.
U - Auto Unloading Valve — Valve automatically releases air
from compressor components at “cut-out” pressure and
when starting unit. Valve is not adjustable or serviceable
by user.
V - Idle Control Valve — Valve lowers engine speed to idle
when “cut-out” pressure is reached. Valve is not
adjustable or serviceable by user.
W - Data Tag — The data tag contains serial number, model
number, and revision number information.
NOTE: See Glossary for definitions.
D
E
M
F
L
R
S
T
V
A
B
C
P N
G
H
J
K
U
Q
W