3B-26 - FUEL SYSTEM
90-830234R3 DECEMBER 1997
Acceleration Pump Circuit Operation
- Four Cylinder Engines
ACCELERATOR PUMP - Receives pressurized fuel
from T-fitting in fuel line between #1 and #2 carbure-
tors. Pump is actuated by throttle cam. Pumps to two
check valve/injector nozzles in #3 and #4 cylinder
boost passages.
FUEL FILTER - 74 micron filter. Prevents debris from
plugging check valve/injector nozzles.
CHECK VALVE/INJECTOR NOZZLE - 2 assem-
blies, one each for #3 and #4 cylinders. Fuel passes
from check valve thru 0.026 inch orifice (injector
nozzle) and into respective cylinder boost passage.
FLOW RESTRICTOR - Helps equalize pressure
within the accelerator pump circuit while allowing air
or any vapor which has formed to pass through and
be vented at the carburetors.
FUEL CONNECTOR - Spring loaded shut off valve
which connects boat fuel tank with outboard fuel sys-
tem.
IMPORTANT: The distance between the accelera-
tor pump and the throttle cam determines the
amount of fuel the accelerator pump will dis-
charge. If accelerator pump is moved or re-
placed, refer to SECTION 2C for correct position-
ing of accelerator pump.
ACCELERATOR PUMP FUEL FLOW CIRCUIT
From T-Fitting between
#2 and #3 Carburetors
To #3 and #4 Cylinder Check
Valve/Injector Nozzles
To Fuel Pump
a
b
c
d
a - Accelerator Pump
b - Fuel Filter
c - Flow Restrictor
d - Fuel Connector
Summary of Contents for 100 FourStroke
Page 5: ...1 A 52485 IMPORTANT INFORMATION SPECIFICATIONS ...
Page 13: ...1 C IMPORTANT INFORMATION GENERAL INFORMATION ...
Page 23: ...1 D IMPORTANT INFORMATION OUTBOARD INSTALLATION ...
Page 37: ...A 2 53970 ELECTRICAL IGNITION ...
Page 81: ...B 2 11669 ELECTRICAL CHARGING AND STARTING SYSTEM ...
Page 108: ...C 2 22480 ELECTRICAL TIMING SYNCHRONIZING ADJUSTING ...
Page 119: ...D 2 ELECTRICAL WIRING DIAGRAMS ...
Page 146: ...A 3 53992 FUEL SYSTEM FUEL PUMP ...
Page 148: ...90 830234R3 DECEMBER 1997 FUEL SYSTEM 3A 1 Notes ...
Page 161: ...B 3 FUEL SYSTEM CARBURETOR ...
Page 190: ...C 3 FUEL SYSTEM OIL INJECTION ...
Page 192: ...90 830234R3 DECEMBER 1997 FUEL SYSTEM 3C 1 Notes ...
Page 211: ...4 20032 POWERHEAD ...
Page 215: ...90 830234R3 DECEMBER 1997 POWERHEAD 4 3 Notes ...
Page 292: ...A 5 MID SECTION CLAMP SWIVEL BRACKETS DRIVE SHAFT HOUSING ...
Page 294: ...90 830234R3 DECEMBER 1997 MID SECTION 5A 1 Notes ...
Page 317: ...5 51485 B MID SECTION POWER TRIM S N USA 0G360002 BEL 9934136 BELOW ...
Page 359: ...C 5 55331 MID SECTION POWER TRIM S N USA 0G360003 BEL 9934137 UP ...
Page 364: ...5C 4 MID SECTION 90 830234R3 DECEMBER 1997 Notes ...
Page 408: ...5 D MID SECTION SHOCK ABSORBER ...
Page 413: ...5 E MID SECTION MANUAL TILT ...
Page 451: ...A 6 791 H LOWER UNIT GEAR HOUSING ...
Page 489: ...6 B LOWER UNIT JET DRIVE ...
Page 491: ...90 830234R3 DECEMBER 1997 LOWER UNIT 6B 1 Notes ...
Page 513: ...A 7 50099 ATTACHMENTS CONTROL LINKAGE THROTTLE SHIFT LINKAGE ...
Page 543: ...7 B ATTACHMENTS CONTROL LINKAGE TILLER HANDLE ...
Page 545: ...90 830234R3 DECEMBER 1997 ATTACHMENTS CONTROL LINKAGE 7B 1 Notes ...
Page 567: ...51605 8 MANUAL STARTER ...
Page 569: ...90 830234R3 DECEMBER 1997 MANUAL STARTER 8A 1 Notes ...