4-0 - POWERHEAD
90-830234R3
DECEMBER 1997
Table of Contents
Page
Specifications
4-1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tools for Powerhead Repair
4-2
. . . . . . . . . . . . . . . . . . . . .
General Information
4-2
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Notes:
4-3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Crankshaft, Pistons and Connecting Rods
(3 Cyl.)
4-4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cylinder Block (3 cyl.)
(USA-0G127499/BEL-9836632 & BELOW)
4-6
. . . . . . . .
Cylinder Block (3 Cyl.)
(USA-0G127500/BEL-9836633 & UP)
4-10
. . . . . . . . . . . .
Induction Manifold and Reed Block (3 Cyl.)
4-14
. . . . . . .
Crankshaft, Pistons and Connecting Rods (4 Cyl.)
4-16
.
Cylinder Block and Crankcase
(80 Jet/100/115/125)
4-18
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Induction Manifold and Reed Block
(80 Jet/100/115/125)
4-22
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Throttle Lever and Linkage
(65 Jet/75/90 Models)
4-24
. . . . . . . . . . . . . . . . . . . . . . . . . .
Throttle Lever
(Models 80Jet/100/115/125)
4-26
. . . . . . . . . . . . . . . . . . . .
Powerhead Removal
4-29
. . . . . . . . . . . . . . . . . . . . . . . . . .
Flywheel Removal
4-34
. . . . . . . . . . . . . . . . . . . . . . . . . .
Powerhead Disassembly
4-35
. . . . . . . . . . . . . . . . . . . . . . .
Cleaning and Inspection
4-40
. . . . . . . . . . . . . . . . . . . . . . . .
Cylinder Block and Crankcase Cover
4-40
. . . . . . . . .
Check Valves
4-42
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Piston and Piston Rings
4-42
. . . . . . . . . . . . . . . . . . . . .
Crankshaft
4-44
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting Rods
4-44
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Cylinder Cover, Exhaust Divider Plate and
Exhaust Cover
4-45
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermostat
4-45
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Temperature Switch Test
4-46
. . . . . . . . . . . . . . . . . . . .
Reed Blocks
4-46
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page
Powerhead Reassembly and Installation
4-47
. . . . . . . . .
General Information
4-47
. . . . . . . . . . . . . . . . . . . . . . . .
End Cap
4-48
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Assembling Rod to Piston
4-48
. . . . . . . . . . . . . . . . . . .
Piston Ring Installation
4-49
. . . . . . . . . . . . . . . . . . . . . .
Crankshaft Installation
4-51
. . . . . . . . . . . . . . . . . . . . . .
Connecting Rod Cap Alignment
4-54
. . . . . . . . . . . . . .
Crankcase Cover to Block
4-55
. . . . . . . . . . . . . . . . . . .
Cylinder Block Cover
4-56
. . . . . . . . . . . . . . . . . . . . . . .
Exhaust Plate Cover and Exhaust Divider Plate 4-57
Intake Manifold and Reed Block Installation
4-59
. . . .
Accelerator Pump Installation
(4 Cylinder Models)
4-60
. . . . . . . . . . . . . . . . . . . . . . . . .
3 Cylinder Bleed Hose Routing
4-61
. . . . . . . . . . . . . . . . . .
4 Cylinder Bleed Hose Routing (1995 and Prior)
4-62
. . .
4 Cylinder Bleed Hose Routing
(1996 and Newer)
4-63
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Cylinder Fuel Enrichment/Accelerator Pump Hose
Routing
4-64
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1994 and Newer 3 Cylinder Harness Routing (without
Oil Reservoir Installed)
4-65
. . . . . . . . . . . . . . . . . . . . . . . . .
1994 and Newer 3 Cylinder Harness Routing
(with Oil Reservoir Installed)
4-66
. . . . . . . . . . . . . . . . . . . .
3 Cylinder Manual Start Harness Routing
4-67
. . . . . . . . .
1994 and Newer 4 Cylinder Harness Routing (without
Oil Reservoir Installed)
4-68
. . . . . . . . . . . . . . . . . . . . . . . . .
1994 and Newer 4 Cylinder Harness Routing
(with Oil Reservoir Installed)
4-69
. . . . . . . . . . . . . . . . . . . .
Ignition Plate Installation
4-70
. . . . . . . . . . . . . . . . . . . .
Trigger and Stator Installation
4-71
. . . . . . . . . . . . . . . .
Stator Installation
4-72
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Temperature Sensor Installation
4-74
. . . . . . . . . . . . . .
Carburetor Installation
4-74
. . . . . . . . . . . . . . . . . . . . . .
Flywheel Installation
4-76
. . . . . . . . . . . . . . . . . . . . . . . .
Oil Reservoir Installation
4-76
. . . . . . . . . . . . . . . . . . . .
Air Box Installation
4-77
. . . . . . . . . . . . . . . . . . . . . . . . . .
Powerhead to Driveshaft Housing
4-78
. . . . . . . . . . . .
Reinstall Bottom Cowl
4-79
. . . . . . . . . . . . . . . . . . . . . . .
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 ...