
3A-2
90-13645--2
495
FUEL SYSTEM AND CARBURETION
Troubleshooting Fuel Pump
(continued)
PROBLEM: LACK OF FUEL PUMP PRESSURE
Possible Cause
Corrective Action
Hole in pulse hose
(1 pulse hose).
Replace pulse hose.
Loose pulse hose.
Tighten connection.
Boost diaphragm gasket
distorted or out of place.
Check seal between
mating surfaces where
“rib” divides pulse
chamber – gasket must
align with rib; check for
distorted gasket. Align
or replace gasket if
necessary.
Fuel Pump Components (Design 1)
NOTE: In fuel pump reassembly, remember that re-
spective diaphragms go against the mating surfaces
of the fuel pump body, and respective gaskets are be-
tween the diaphragms and end caps. Gaskets should
always be replaced on fuel pump assembly.
a
b
c
d
e
g
h
i
j
k
l
m
n
o
p
q
s
t
r
f
a - Fuel Pump Base
b - Fuel Pump Body
c - Chamber Plate
d - Gasket, Base
e - Fuel Filter – Inline
f - Gasket, Pulse Chamber
g - Diaphragm, Fuel Pump
h - Retainer, Check Valve
i - Check Valve
j - Check Valve Rubber Disc
k - Main Compression Spring End Cap
l - Main Compression Spring
m- Boost Diaphragm
n - Boost Chamber Gasket
o - Boost Compression Spring End Cap
p - Boost Compression Spring
q - Retainer, Check Valve
r - Check Valve
s - Check Valve Rubber Disc
t - Check Valve Assembly
Summary of Contents for 100
Page 4: ...GENERAL INFORMATION AND SPECIFICATIONS 1 ...
Page 18: ...IGNITION SYSTEM ELECTRICAL AND IGNITION A 2 ...
Page 30: ...11669 BATTERY CHARGING SYSTEM AND STARTING SYSTEM ELECTRICAL AND IGNITION B 2 ...
Page 58: ...22480 TIMING SYNCHRONIZING ADJUSTING ELECTRICAL AND IGNITION C 2 ...
Page 71: ...WIRING DIAGRAMS ELECTRICAL AND IGNITION D 2 ...
Page 86: ...FUEL SYSTEM AND CARBURETION A 3 ...
Page 118: ...OIL INJECTION SYSTEM B 3 ...
Page 127: ...20032 3 CYLINDER ENGINES POWERHEAD A 4 ...
Page 168: ...791 H GEAR HOUSING LOWER UNIT A 5 ...
Page 170: ...5A 1 90 13645 2 1095 LOWER UNIT Notes ...
Page 205: ...MID SECTION LOWER UNIT B 5 ...
Page 207: ...5B 1 90 13645 2 495 LOWER UNIT Notes ...
Page 218: ...SHOCK ABSORBER LOWER UNIT C 5 ...
Page 223: ...17250 DESIGN I SIDE FILL RESERVOIR POWER TRIM A 6 ...
Page 233: ...6A 9 POWER TRIM 90 13645 2 495 Commander Side Mount Remote Control Wiring Diagram ...
Page 268: ...DESIGN II AFT FILL RESERVOIR POWER TRIM B 6 51344 ...
Page 305: ...SINGLE RAM POWER TRIM C 6 51485 ...
Page 309: ...6C 3 90 13645 2 495 POWER TRIM Notes ...
Page 340: ...50099 ENGINE ATTACHMENTS ENGINE INSTALLATION 7 A ...
Page 369: ...TILLER HANDLE AND CO PILOT OUTBOARD MOTOR INSTALLATION ATTACHMENTS 7 B ...
Page 371: ...7B 1 90 13645 2 495 OUTBOARD MOTOR INSTALLATION ATTACHMENTS Notes ...