40V

Table of contents

YAMAHA 40V, 50H, 40W, 50W PARTS CATALOGUE

WORLD WIDE

40V, 50H

USA/CANADA

40W, 50W

SERVICE

MANUAL

LIT-18616-01-81 290320

A20000-0

NOTICE

This manual has been prepared by the Yamaha Motor Company primarily for use by Yamaha dealers and their trained mechanics when performing maintenance procedures and repairs to Yamaha equipment. It has been written to suit the needs of persons who have a basic understanding of the mechanical and electrical concepts and procedures inherent in the work, for without such knowledge attempted repairs or service to the equipment could render it unsafe or unfit for use.

Because the Yamaha Motor Company Ltd. has a policy of continuously improving its products, models may differ in detail from the descriptions and illustrations given in this publication. Use only the latest edition of this manual. Authorized Yamaha dealers are notified periodically of modifications and significant changes in specifications and procedures, and these are incorporated in successive editions of this manual.

A10001-0*

40V/50H

SERVICE MANUAL



1997 Yamaha Motor Corporation, USA

1st Edition, August 1997

No part of this publication may be

reproduced or transmitted in any form or

by any means including photocopying and

recording without the written permission of

the copyright holder.

Such written permission must also be

obtained before any part of this publication

is stored in a retrieval system of any nature.

Printed in U.S.A.

LIT-18616-01-81

HOW TO USE THIS MANUAL

MANUAL FORMAT

All of the procedures in this manual are organized in a sequential, step-by-step format. The information has been complied to provide the mechanic with an easy to read, handy reference that contains comprehensive explanations of all disassembly, repair, assembly, and inspection operations. In this revised format, the condition of a faulty component will precede an arrow symbol and the course of action required will follow the symbol, e.g.,

Bearings

●

Pitting/Damage

To assist you to find your way about this manual, the Section Title and Major Heading is given at the head of every page.

An Index to contents is provided on the first page of each Section.

→

Replace.

MODEL INDICATION

Multiple models are shown in this manual. These indications are noted as follows.

Model name 40VMH 40VMHD 40VMHO 40VMO 40VWH 40VE 40VEO 40VEHTO 40VET

USA and

CANADA name

Indication 40VMH 40VMHD 40VMHO 40VMO 40VWH 40VE 40VEO 40VEHTO 40VET

Model name 40VETO 50HMHO 50HMHD 50HMO 50HMDO 50HWHD 50HEDO 50HET 50HETO

USA and

CANADA name

Indication 40VETO 50HMHO 50HMHD 50HMO 50HMDO 50HWHD 50HEDO 50HET 50HETO

C40MH 40MH C40ER 40ER P40TH C40TR

40TR 50ER C50TR 50TR

THE ILLUSTRATIONS

Some illustrations in this manual may differ from the model you have. This is because a procedure described may relate to several models, though only one may be illustrated. (The name of model described will be mentioned in the description).

REFERENCES

These have been kept to a minimum; however, when you are referred to another section of the manual, you are told the page number to go to.

WARNINGS, CAUTIONS AND NOTES

Attention is drawn to the various Warnings, Cautions and Notes which distinguish important information in this manual in the following ways.

The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!

WARNING

Failure to follow WARNING instructions could result in severe injury or death to the machine operator, a bystander, or a person inspecting or repairing the outboard motor.

CAUTION:

A CAUTION indicates special precautions that must be taken to avoid damage to the outboard motor.

NOTE:

A NOTE provides key information to make procedures easier or clearer.

SPECIFICATIONS

These are given in bold type at each procedure. It is not necessary to leave the section dealing with the procedure in order to look up the specifications. It is important to note the differences in specifications of models. When a procedure relates to more than one model, the main differences in specifications will be shown in a following table.

Model name 40VMH 40VMHD 40VMHO 40VMO 40VWH 40VE 40VEO 40VEHTO 40VET

Starting system Manual Manual Manual Manual

Control system Tiller Tiller Tiller Remote Tiller Remote Remote Tiller Remote

Trim/Tilt system Manual tilt Hydro tilt Manual tilt Manual tilt Hydro tilt Manual tilt Manual tilt PTT PTT

Lubrication system Pre-Mixed Pre-Mixed Oil injection Oil injection Pre-Mixed Pre-Mixed Oil injection Oil injection Pre-Mixed

Warning indicator

lamp

Enrichment system Choke Choke Choke Choke Prime Start Prime Start Prime Start Prime Start Prime Start

Model name 40VETO 50HMHO 50HMHD 50HMO 50HMDO 50HWHD 50HEDO 50HET 50HETO

Starting system Electric Manual Manual Manual Manual

Control system Remote Tiller Tiller Remote Remote Tiller Remote Remote Remote

1111113——

Manual

& Electric

Electric Electric Electric Electric

Manual &

Electric

Electric Electric Electric

Trim/Tilt system PTT Manual tilt Hydro tilt Manual tilt Hydro tilt Hydro tilt Hydro tilt PTT PTT

Lubrication system Oil injection Oil injection Pre-Mixed Oil injection Oil injection Pre-Mixed Oil injection Oil injection Oil injection

Warning indicator

lamp

Enrichment system Prime Start Choke Choke Choke Choke Prime Start Prime Start Prime Start Prime Start

3111113——

HOW TO READ DESCRIPTIONS

1. A disassembly installation job mainly consists of the exploded diagram 1 .

2. The numerical figures represented by the number 2 indicates the order of the job steps.

3. The symbols represented by the number 3 indicates the contents and notes of the job. For the meanings of the symbols, refer to the next page(s).

4. The REMOVAL AND INSTALLATION CHART 4 is attached to the exploded diagram and explains the job steps, part names, notes for the jobs, etc.

5. The SERVICE POINTS, other than the exploded diagram, explains in detail the items difficult to explain in the exploded diagram or REMOVAL AND INSTALLATION CHART, the Service points requiring the detailed description 5 , etc.

GEN

INFO

SPEC

INSP

FUEL

ADJ

POWR

BRKT

LOWR

–+

ELEC

TRBL

ANLS

A50001-1-4

SYMBOLS

Symbols 1 to 9 are designed as thumbtabs to indicate the content of a chapter.

General Information Specifications Periodic Inspection and Adjustment Fuel System Power Unit Lower Unit Bracket Unit Electrical System Trouble-analysis

Symbols 0 to F indicate specific data:

Special tool Specified liquid Specified grease Specified engine speed Specified torque Specified measurement Specified electrical value [Resistance ( (A)]

Ω

), Voltage (V), Electric current

242

271

572

Symbol G to J in an exploded diagram indicate grade of lubricant and location of lubrication point:

Apply Yamaha 2-stroke outboard motor oil Apply Yamaha gear-case lubricant Apply molybdenum disulfide oil Apply water resistant grease (Yamaha grease A, Yamaha marine grease)

Symbols K to N in an exploded diagram indicate grade of sealing or locking agent, and location of application point:

Apply Gasket maker Apply LOCTITE

M Apply LOCTITE N Apply LOCTITE No. 572



No. 271 (Red LOCTITE)



No. 242 (Blue LOCTITE)

NOTE:

In this manual, the above symbols may not be used in every case.

A30000-0

INDEX

GENERAL INFORMATION

SPECIFICATIONS

PERIODIC INSPECTION AND ADJUSTMENT

FUEL SYSTEM

GEN

INFO

SPEC

INSP

ADJ

FUEL

1 2 3 4

POWER UNIT

LOWER UNIT

BRACKET UNIT

ELECTRICAL SYSTEM

POWR

LOWER

BRKT

–+

ELEC

5 6 7 8

TROUBLE-ANALYSIS

TRBL

ANLS

GEN

INFO

CHAPTER 1

GENERAL INFORMATION

IDENTIFICATION ............................................................................................. 1-1

SERIAL NUMBER ..................................................................................... 1-1

STARTING SERIAL NUMBERS ............................................................... 1-1

SAFETY WHILE WORKING ............................................................................ 1-2

FIRE PREVENTION ................................................................................... 1-2

VENTILATION........................................................................................... 1-2

SELF-PROTECTION.................................................................................. 1-2

OILS, GREASES AND SEALING FLUIDS................................................ 1-2

GOOD WORKING PRACTICES ................................................................ 1-3

DISASSEMBLY AND ASSEMBLY ........................................................... 1-4

1 2

SPECIAL TOOLS ............................................................................................. 1-5

MEASURING ............................................................................................ 1-6

REMOVAL AND INSTALLATION ............................................................ 1-8

3 4 5 6 7 8 9

GEN

INFO

IDENTIFICATION

A60000-1*

IDENTIFICATION

SERIAL NUMBER

The serial number of the outboard motor is stamped on a plate attached to the port side of the clamp bracket.

NOTE:

As an antitheft measure, a special label on which the outboard motor serial number is stamped is bonded to the portside of the clamp bracket. The label is specially treated so that peeling it off causes cracks across the serial number.

Model name Approved model No. Transom height Serial number

STARTING SERIAL NUMBERS

The starting serial number blocks are as follows:

Model

World-

wide

40VMH C40MH

40VMHD — L: 560290 ~ 50HMO — S: 260189 ~

40VMHO 40MH

40VMO —

40VWH — L: 510116 ~ 50HET C50TR L: 900101 ~

40VE C40ER

40VEO 40ER

40VEHTO P40TH L: 430386 ~

40VET C40TR L: 921505 ~

40VETO 40TR

USA,

CANADA

Approved

model

code

6H4

Starting

serial No.

S: 010262 ~ 50HMHO —

L: 310801 ~ 50HMHD — L: 310380 ~

S: 191877 ~ 50HMDO — L: 560258 ~

L: 491566 ~ 50HWHD — L: 850194 ~

S: 290284 ~

L: 860312 ~ L: 521079 ~

S: 060285 ~

L: 360173 ~ L: 444058 ~

S: 110760 ~ X: 750216 ~

L: 842362 ~

X: 740146 ~

S: 880367 ~

L: 544974 ~

X: 900196 ~

50HEDO 50ER

50HETO 50TR

World-

wide

Model

CANADA

USA,

Approved

model

code

6H5

Starting

serial No.

S: 190662 ~

S: 090431 ~

S: 210142 ~

1-1

GEN

INFO

SAFETY WHILE WORKING

The procedures given in this manual are those recommended by Yamaha to be followed by Yamaha dealers and their mechanics.

FIRE PREVENTION

Gasoline (petrol) is highly flammable. Petroleum vapor is explosive if ignited. Do not smoke while handling, and keep it away from heat, sparks, and open flames.

VENTILATION

Petroleum vapor is heavier than air and is deadly if inhaled in large quantities. Engine exhaust gases are harmful to breathe. When test-running an engine indoors, maintain good ventilation.

SELF-PROTECTION

Protect your eyes with suitable safety glasses or safety goggles when using compressed air, when grinding or when doing any operation which may cause particles to fly off. Protect hands and feet by wearing safety gloves or protective shoes if appropriate to the work you are doing.

OILS, GREASES AND SEALING FLUIDS

Use only genuine Yamaha oils, greases and sealing fluids or those recommended by Yamaha.

1-2

GEN

INFO

SAFETY WHILE WORKING

Under normal conditions of use, there should be no hazards from the use of the lubricants mentioned in this manual, but safety is all-important, and by adopting good safety practices, any risk is minimized. A summary of the most important precautions is as follows:

1. While working, maintain good standards of personal and industrial hygiene.

2. Clothing which has become contaminated with lubricants should be changed as soon as practicable, and laundered before further use.

3. Avoid skin contact with lubricants; do not, for example, place a soiled wipingrag in one’s pocket.

4. Hands and any other part of the body which have been in contact with lubricants or lubricant-contaminated clothing, should be thoroughly washed with hot water and soap as soon as practicable.

5. To protect the skin, the application of a suitable barrier cream to the hands before working is recommended.

6. A supply of clean lint-free cloths should be available for wiping purposes.

GOOD WORKING PRACTICES

The right tools

Use the special tools that are advised to protect parts from damage. Use the right tool in the right manner — don’t improvise.

2. Tightening torque Follow the torque tightening instructions. When tightening bolts, nuts and screws, tighten the large sizes first, and tighten inner-positioned fixings before outer-positioned ones.

1-3

GEN

INFO

SAFETY WHILE WORKING

DISASSEMBLY AND ASSEMBLY

1. Clean parts with compressed-air on dis-

2. Oil the contact surfaces of moving parts

Non-reusable items

Always use new gaskets, packings, Orings, split-pins and circlips etc. on reassembly.

assembling them.

on assembly.

3. After assembly, check that moving parts operate normally.

4. Install bearings with the manufacturer’s markings on the side exposed to view, and liberally oil the bearings.

5. When installing oil seals, apply a light coating of water-resistant grease to the outside diameter.

1-4

GEN

INFO

A80000-0*

SPECIAL TOOLS

The use of correct special tools recommended by Yamaha will aid the work and enable accurate assembly and tune-up. Improvisations and use of improper tools can cause damage to the equipment.

NOTE:

For U.S.A. and Canada, use part number starting with “YB-”, “YU-” or “YW-”.

●

For others, use part number starting with “90890-”.

●

1-5

GEN

INFO

MEASURING

1 Tachometer YU-08036-A 90890-06760 Idle speed 2 Dynamic spark tester YM-34487 90890-06754 Ignition system 3 C.D.I. tester YU-91022-B N.A. Ignition system 4 Mity Vac YB-35956 90890-06756 Fuel joint 5 Pressure tester YB-35956 90890-06762 Lower case 6 Dial indicator YU-03097 90890-01252 Backlash 7 Backlash indicator YB-06265 90890-06706 Backlash 8 Magnetic flexible stand YU-34481 90890-06705 Backlash

9 Backlash adjusting plate YB-07003 N.A. Backlash 10 Thickness gauge YU-26900-9 N.A. Shimming 11 Pinion height gauge N.A. 90890-06702 Pinion shimming

12 Digital caliper N.A. 90890-06704

13 Gauge block YB-34432-9 N.A. Pinion shimming 14 Adapter plate YB-34432-10 N.A. Pinion shimming 15 Gauge base YB-34432-11 N.A. Pinion shimming 16 Clamp YB-34432-17 N.A. Pinion shimming 17 Shimming plate N.A. 90890-06701 Forward shimming 18 Base plate YB-34446-1 N.A. Forward shimming 19 Compression spring YB-34446-3 N.A. Forward shimming 20 Press plate YB-34446-4 N.A. Forward shimming 21 Gauge pin YB-34446-7 N.A. Forward shimming 22 Digital multimeter YU-34899-A 90890-06752 Electrical 23 Pocket tester YU-03112 90890-03112 Electrical 24 Spins test harness YB-06757 90890-06757 Peak voltage measurement

SPECIAL TOOLS

Tool name

Tool No.

USA and

Canada a

Except for

USA and

Canada b

Pinion

shimming

Use for:

Forward

shimming

1-6

GEN

INFO

SPECIAL TOOLS

1-7

GEN

INFO

REMOVAL AND INSTALLATION

Small end bearing

needle installer

2 Bearing separator YB-06219 90890-06534

3 Flywheel holder YB-06139 90890-06522 Flywheel

4 Flywheel puller YB-06117 90890-06521 Flywheel

5 Stopper guide plate N.A. 90890-06501

6 Bearing housing puller YB-06234 90890-06503 Propeller shaft housing

7 Center bolt N.A. 90890-06504 Propeller shaft housing

8 Universal puller YB-06117 N.A. Propeller shaft housing

9 Oil seal installer YB-06168 N.A. Propeller shaft oil seal

10 Needle bearing remover YB-06112 90890-06614

11 Needle bearing installer YB-06111 90890-06614

13 Stopper guide stand N.A. 90890-06538

14 Slide hammer set YB-06096 N.A.

15 Pinion nut wrench N.A. 90890-06505 Pinion nut 16 Socket adapter N.A. 90890-06506 Pinion nut 17 Drive shaft holder YB-06079 90890-06517 Pinion nut

20 Bearing installer YB-06167 90890-06628 Drive shaft oil seal 21 Bearing installer YB-06110 90890-06627 Drive shaft outer bearing 22 Bearing installer YB-06270-A 90890-06640 Forward gear inner bearing

Bearing outer race puller clow

Needle bearing attachment

Drive shaft needle bearing depth stop

SPECIAL TOOLS

Tool name

Tool No.

USA and

Canada a

YB-06106 90890-06526 Small end

N.A. 90890-06535 Reverse gear bearing

YB-06063 90890-06614 Drive shaft needle bearing

YB-34473 N.A. Drive shaft needle bearing

Except for

USA and

Canada b

Crank shaft bearing

Propeller shaft housing

Reverse gear bearing

Use for:

Reverse gear bearing

Forward gear inner bearing

Reverse gear bearing

Drive shaft outer bearing

Propeller shaft

needle bearing

Propeller shaft

needle bearing

Forward gear outer bearing

Drive shaft outer bearing

Forward gear outer bearing

1-8

GEN

INFO

SPECIAL TOOLS

1-9

GEN

INFO

23 Bearing outer race puller N.A. 90890-06523 Forward gear outer bearing

25 Bearing installer YB-41446 90890-06626 Forward gear outer bearing 26 Shift rod wrench YB-06052 N.A. Shift rod 27 Tilt cylinder wrench YB-06175-2B 90890-06544 PTT

28 Bearing depth plate N.A. 90890-06603

29 Driver rod - SL N.A. 90890-06602 Drive shaft needle bearing

30 Driver rod - SS N.A. 90890-06604

31 Driver rod - L YB-06071 90890-06605 Bearing and oil seal 32 Driver rod - S N.A. 90890-06606 Bearing and oil seal 33 Driver rod - M10 N.A. 90890-06652 Bearing and oil seal

Bearing outer race puller clow

SPECIAL TOOLS

Tool name

Tool No.

USA and

Canada a

N.A. 90890-06532 Forward gear outer bearing

Except for

USA and

Canada b

Propeller

shaft needle

bearing

Use for:

Drive shaft

needle bear-

ing

Propeller shaft

needle bearing

1-10

SPEC

CHAPTER 2

SPECIFICATIONS

GENERAL SPECIFICATIONS .......................................................................... 2-1

MAINTENANCE SPECIFICATIONS ................................................................ 2-7

ENGINE ..................................................................................................... 2-7

LOWER...................................................................................................... 2-9

ELECTRICAL ........................................................................................... 2-10

DIMENSION 1......................................................................................... 2-13

DIMENSION 2......................................................................................... 2-15

TIGHTENING TORQUE ................................................................................. 2-17

SPECIFIED TORQUE .............................................................................. 2-17

GENERAL TORQUE ............................................................................... 2-18

1 2 3 4 5 6 7 8 9

SPEC

GENERAL SPECIFICATIONS

Item

Worldwide 40VMH 40VMHD 40VMHO 40VMO 40VWH

USA, CANADA C40MH — 40MH — —

DIMENSION:

Over-all length Over-all width Over-all height S

Boat transom height

WEIGHT: (with aluminum propeller)

PERFORMANCE:

Output (ISO) Full throttle operating

range Maximum fuel con-

sumption

ENGINE:

Type Number of cylinder Total displacement Bore × Stroke Compression ratio Number of carburetor Intake system Scavenging system Control system Starting system

Ignition system Alternator output Enrichment system Advance type Spark plug (NGK)

For CANADA and

Europe Exhaust system Cooling system Lubrication system

Unit

mm (in) mm (in) mm (in) 1,223 (48.1) — 1,223 (48.1) — mm (in) 1,350 (53.1) mm (in) —

mm (in)

mm (in) 508 (20.0) mm (in) —

kg (lb) 74 (163) — 75.8 (167) 71.5 (158) — kg (lb) 76.5 (169) 84 (185.2) 77.5 (171) 74 (163) 81.5 (179.7) kg (lb) —

kW (hp)/rpm 29.4 (40)/5,000

rpm 4,500 ~ 5,500

L (US gal,

Imp gal)/ h at rpm

(cu. in) 698 (42.6)

mm (in) 67.0 × 66.0 (2.64 × 2.60)

Model

1,281 (50.4)

349 (13.7) 360 (14.2)

381 (15.0) — 381 (15.0) 381 (15.0)

18.5 (4.9, 4.1) at 5,500

2 stroke - L

6.00 3

Reed valve

Loop charge

Tiller control

Manual

CDI

80W 12-80 80W 12-6A

Choke valve Prime start

Electric automatic

B7HS-10

BR7HS-10

Through propeller boss

Water

Pre-mixed fuel & oil Oil injection

670 (26.4) 1,281 (50.4)

Remote control Tiller control

Manual &

—

Electric

Pre-mixed

fuel & oil

2-1

SPEC

GENERAL SPECIFICATIONS

Item

Worldwide 40VMH 40VMHD 40VMHO 40VMO 40VWH

USA, CANADA C40MH — 40MH — —

FUEL AND LUBRICATION:

Fuel type Fuel rating Engine oil type/grade Mixing ratio Engine oil tank capacity

Gear oil type Gear oil quantity

BRACKET:

Trim/tilt system Tilt angle Tilt-up angle Trim angle

Shallow water crushing angle

Steering angle

DRIVE UNIT:

Gear shift position Gear ratio Gear type Clutch type Propeller direction Propeller drive system Propeller series mark

ELECTRICAL:

Battery capacity Cold cranking

Model

Unit

Regular gasoline

P.O.N.*

2-stroke outboard motor oil / TC-W3

50 : 1 — 50 : 1

L (US qt,

Imp qt)

(US oz,

Imp oz)

degree degree 66 69 66

degree at 12˚

transom

degree Tilt angle +18 — Tilt angle +18 — Tilt angle +18

degree

(left + right)

Ah (kC) —

Amps —

8, 12, 16, 20, 24

— 1.5 (1.6, 1.3) —

— 8, 12, 16, 20, 24 —

— –4 ~ 20 —

Min. 86

Hypoid gear oil-SAE#90

430 (14.5, 15.1)

Manual tilt

40 + 40

F-N-R

1.85 (24/13)

Spiral bevel gear

Dog clutch

Clockwise

Spline

70 (252)

380

*1: Pump Octane Number ; (Research octane + Motor octane)/2

2-2

SPEC

GENERAL SPECIFICATIONS

Item

Worldwide 40VE 40VEO 40VEHTO 40VET 40VETO

USA, CANADA C40ER 40ER P40TH C40TR 40TR

DIMENSION:

Over-all length Over-all width Over-all height S

Boat transom height

WEIGHT: (with aluminum propeller)

PERFORMANCE:

Output (ISO) Full throttle operating

range Maximum fuel con-

sumption

ENGINE:

Type Number of cylinder Total displacement Bore × Stroke Compression ratio Number of carburetor Intake system Scavenging system Control system Starting system Ignition system Alternator output Enrichment system Advance type Spark plug (NGK)

For CANADA and

Europe Exhaust system Cooling system Lubrication system

Model

Unit

mm (in) 670 (26.4) 1,281 (50.4) 646 (25.4) mm (in) 349 (13.7) 360 (14.2) 350 (13.8) mm (in) 1,192 (46.9) — 1,192 (46.9) mm (in) 1,319 (51.9) mm (in) — 1,433 (56.4) — 1,433 (56.4)

mm (in)

mm (in) 508 (20.0) mm (in) — 635 (25.0) — 635 (25.0)

kg (lb) 73.5 (162) 74.5 (164) — 85.5 (189) kg (lb) 76 (168) 77.3 (170) 90 (198) 87 (191.8) 88 (194) kg (lb) — 80.5 (177) — 91.5 (201.7)

kW (hp)/rpm 29.4 (40)/5,000

rpm 4,500 ~ 5,500

L (US gal,

Imp gal)/ h at rpm

(cu. in) 698 (42.6)

mm (in) 67.0 × 66.0 (2.64 × 2.60)

381 (15.0) — 381 (15.0)

18.5 (4.9, 4.1) at 5,500

2 stroke - L

6.00 3

Reed valve

Loop charge

Remote control Tiller control Remote control

Electric

CDI

6A 12-6 6A

Prime start

Electric automatic

B7HS-10

BR7HS-10

Through propeller boss

Water

Pre-mixed

fuel & oil

Oil injection

Pre-mixed

fuel & oil

Oil injection

2-3

SPEC

GENERAL SPECIFICATIONS

Item

Worldwide 40VE 40VEO 40VEHTO 40VET 40VETO

USA, CANADA C40ER 40ER P40TH C40TR 40TR

FUEL AND LUBRICATION:

Fuel type Fuel rating Engine oil type/grade Mixing ratio Engine oil tank capacity

Gear oil type Gear oil quantity

BRACKET:

Trim/tilt system

Tilt angle Tilt-up angle Trim angle

Shallow water crushing angle

Steering angle

DRIVE UNIT:

Gear shift position Gear ratio Gear type Clutch type Propeller direction Propeller drive system Propeller series mark

ELECTRICAL:

Battery capacity Cold cranking

Model

Unit

Regular gasoline

P.O.N.*

2-stroke outboard motor oil / TC-W3

50 : 1 — 50 : 1 —

L (US qt,

Imp qt)

cm3 (US oz,

Imp oz)

degree 8, 12, 16, 20, 24 — degree 66 69

degree at 12˚

transom

degree — Tilt angle +18 —

degree

(left + right)

Ah (kC) 70 (252)

Amps 385 380 385

— 1.5 (1.6, 1.3) — 1.5 (1.6, 1.3)

Hypoid gear oil-SAE#90

Manual tilt

— –4 ~ 20

Min. 86

430 (14.5, 15.1)

Power trim/

tilt

40 + 40

F-N-R

1.85 (24/13)

Spiral bevel gear

Dog clutch

Clockwise

Spline

Manual tilt

Power trim/

tilt

*1: Pump Octane Number ; (Research octane + Motor octane)/2

2-4

SPEC

GENERAL SPECIFICATIONS

Item

Worldwide 50HMHO 50HMHD 50HMO 50HMDO

USA, CANADA —————50ER C50TR 50TR

DIMENSION:

Over-all length Over-all width Over-all height S

Boat transom height

WEIGHT:

(with aluminum propeller)

PERFORMANCE:

Output (ISO) Full throttle operation

range Maximum fuel con-

sumption

ENGINE:

Type Number of cylinder Total displacement Bore × Stroke Compression ratio Number of carburetor Intake system Scavenging system Control system

Starting system

Ignition system Alternator output Enrichment system Advance type Spark plug (NGK)

For CANADA and

Europe Exhaust system Cooling system Lubrication system

Model

Unit

mm (in) 1,281 (50.4) 670 (26.4) 1,281 (50.4) 670 (26.4) mm (in) 349 (13.7) 360 (14.2) 349 (13.7) 360 (14.2) mm (in) 1,223 (48.1) mm (in) — 1,350 (53.1) — 1,350 (53.1) 1,319 (51.9)

mm (in) — — 1,433 (56.4)

mm (in) 381 (15.0)

mm (in) — 508 (20.0) — 508 (20.0)

mm (in) — — 635 (25.0)

kg (lb) 75 (165) 81.5 (180) 71.5 (158) — 82 (181) — 85.5 (188) kg (lb) — 84 (185) — 81.5 (180) 90 (198) 84.5 (186) 87 (191.8) 88 (194)

kg (lb) — 91.5 (202)

kW (hp)/rpm 36.8 (50)/5,000

rpm 4,500 ~ 5,500

L (US gal,

Imp gal)/ h at rpm

cm3 (cu. in) 698 (42.6)

mm (in) 67.0 × 66.0 (2.64 × 2.60)

Tiller control Remote control

Oil

injection

—

1,223 (48.1) — 1,192 (46.9) — 1,192 (46.9)

—

381 (15.0) — 381 (15.0) — 381 (15.0)

22 (5.8, 4.8) at 5,500

Manual

80W 6A

Choke valve Prime start

Electric automatic

Through propeller boss

Pre-Mixed

fuel & Oil

Oil injection

50HWHD

2 stroke - L

6.00 3

Reed valve

Loop charge

Tiller

control

Manual

& Electric

CDI

B8HS-10

BR8HS-10

Water

Pre-Mixed

fuel & Oil

50HEDO

Remote control

Oil

injection

50HET

Electric

Pre-Mixed

fuel & Oil

50HETO

Oil

injection

2-5

SPEC

GENERAL SPECIFICATIONS

Item

Worldwide 50HMHO 50HMHD 50HMO 50HMDO

USA, CANADA —————50ER C50TR 50TR

FUEL AND LUBRICATION:

Fuel type Fuel rating Engine oil type/grade Mixing ratio Engine oil tank capacity

Gear oil type Gear oil quantity

BRACKET:

Trim/tilt system

Tilt angle

Tilt-up angle Trim angle

Shallow water crushing angle

Steering angle

DRIVE UNIT:

Gear shift position Gear ratio Gear type Clutch type Propeller direction Propeller drive system Propeller series mark

ELECTRICAL:

Battery capacity Cold cracking

Model

Unit

Regular gasoline

P.O.N.*

2-stroke outboard motor oil / TC-W3

— 50 : 1 — 50 : 1 — 50 : 1 —

L (US qt,

Imp qt)

cm3 (US oz,

Imp oz)

degree

degree 66 69 66 69

degree at

12˚ transom

degree —

degree

(left + right)

Ah (kC) — 70 (252)

Amps — 380

1.5

(1.6, 1.3)

Manual

tilt

8, 12, 16,

20, 24

— –4 ~ 20 — –4 ~20

— 1.5 (1.6, 1.3) —

Hypoid gear oil-SAE#90

430 (14.5, 15.1)

Hydro tilt

Manual

tilt

8, 12, 16,

—

20, 24

Tilt angle

+18

Spiral bevel gear

50HWHD

Min. 86

Hydro tilt

40 + 40

F-N-R

1.85 (24/13)

Dog clutch

Clockwise

Spline

50HEDO

1.5

(1.6, 1.3)

—

50HET

— 1.5

Manual

tilt

50HETO

(1.6, 1.3)

Power

trim/tilt

*1: Pump Octane Number ; (Research octane + Motor octane)/2

2-6

SPEC

MAINTENANCE SPECIFICATIONS

ENGINE

Item Unit

CYLINDER HEAD:

Warpage limit mm (in) 0.1 (0.004)

CYLINDER:

Bore size mm (in) 67.00 ~ 67.02 (2.638 ~ 2.639) Wear limit mm (in) 67.10 (2.642) Taper limi mm (in) 0.08 (0.003) Out of round limit mm (in) 0.05 (0.002)

PISTON:

Identification mark mm (in) W Piston clearance mm (in) 0.060 ~ 0.065 (0.0024 ~ 0.0026) Limit mm (in) 0.115 (0.0045) Diameter D mm (in) 66.940 ~ 67.000 (2.6354 ~ 2.6378) Measuring point H mm (in) 10 (0.4) Pin boss inside diameter mm (in) 18.008 ~ 18.015 (0.7090 ~ 0.7093) Ring groove clearance (installed) mm (in)

top mm (in) 0.04 ~ 0.08 (0.002 ~ 0.003)

2nd mm (in) 0.03 ~ 0.07 (0.001 ~ 0.003)

Over size piston mm (in)

Diameter 1st*

2nd mm (in) 67.50 (2.657)

PISTON PIN:

Diameter mm (in) 17.995 ~ 18.000 (0.7085 ~ 0.7087)

PISTON RING (1st):

Type mm (in) Keystone Dimensions (B × T) mm (in) 2.0 × 2.6 (0.08 × 0.10) End gap (installed) mm (in) 0.40 ~ 0.60 (0.016 ~ 0.024) Limit mm (in) 0.80 (0.031)

PISTON RING (2nd):

Type mm (in) Keystone Dimensions (B × T) mm (in) 2.0 × 2.6 (0.08 × 0.10) End gap (installed) mm (in) 0.40 ~ 0.60 (0.016 ~ 0.024) Limit mm (in) 0.80 (0.031)

CONNECTING ROD:

Small end diameter mm (in) 22.005 ~ 22.008 (0.8663 ~ 0.8665)

CRANK SHAFT ASSEMBLY:

Crank width A mm (in) 53.90 ~ 53.95 (2.122 ~ 2.124) Crank width B mm (in) 32.88 ~ 33.10 (1.294 ~ 1.303) Runout limit D mm (in) 0.03 (0.001) Big end side clearance E mm (in) 0.20 ~ 0.70 (0.008 ~ 0.028) Small end axial play limit F mm (in) 2.0 (0.08)

mm (in) 67.25 (2.648)

40 hp 50 hp

Model

*1: Except for U.S.A.

2-7

SPEC

MAINTENANCE SPECIFICATIONS

Item Unit

THERMOSTAT:

Opening temperature ˚C (˚F) 48 ~ 52 (118 ~ 126) Full-opening temperature ˚C (˚F) 60 (140) Valve lift mm (in) 3 (0.12)

OIL INJECTION PUMP:

Identification mark 63D00

Specified discharge cm

REED VALVE:

Valve stopper height mm (in) 6.0 ± 0.2 (0.24 ± 0.01) Valve bending limit mm (in) 0.2 (0.01)

CARBURETOR:

Identification mark 63B00 63D00 62W00 62X00 Float height mm (in) 15.0 ± 1.0 (0.59 ± 0.04) Valve seat size mm (in) 1.2 (0.05) Main jet (M.J.) # 115 118(M) 125 130 Main nozzle (M.N.) mm (in) 3.0 (0.12) 3.2 (0.13) 3.0 (0.12) Main air jet (M.A.J.) # 160 130 140 Pilot jet (P.J.) # 60 62 Pilot air jet (P.A.J.) # 75 90 80 Pilot screw (P.S.) turns out 1-1/2 ± 1/4 1-5/8 ± 1/4 1-3/8 ± 1/4 Starter jet (S.J.) mm (in) — 1.0 (0.04) — 1.0 (0.04) Electrothermal valve resistance

(color — color) Idle speed rpm 800 ± 50

RECOIL STARTER:

Starter rope length mm (in) 2,095 (82.5)

(US

oz, Imp oz)

Ω (color) —

1.60 ± 0.50 (0.054 ± 0.017, 0.056 ± 0.018)

(M model) (E, W model) (M model) (E, W model)

40 hp 50 hp

2.32 ~ 3.48 (L — B)

Model

—

2.32 ~ 3.48 (L — B)

2-8

SPEC

LOWER

MAINTENANCE SPECIFICATIONS

Item Unit

GEAR BACKLASH:

Pinion - forward mm (in) 0.18 ~ 0.45 (0.007 ~ 0.018) Pinion - reverse mm (in) 0.71 ~ 0.98 (0.028 ~ 0.039) Pinion shims mm (in) 0.05, 0.08, 0.12, 0.30, 0.50 Forward shims mm (in) 0.05, 0.08, 0.12, 0.30, 0.50 Reverse shims mm (in) 0.05, 0.08, 0.12, 0.30, 0.50

PROPELLER:

Material Aluminum Stainless steel No. of blades × diameter × pitch in 3 × 10 × 15

Test propeller 1 90890-01611 90890-01611 rpm r/min 4,900 ~ 5,100 5,250 ~ 5,450 Test propeller 2 YB-1611 YB-1611 rpm r/min 4,900 ~ 5,100 5,250 ~ 5,450

POWER TRIM AND TILT:

Fluid type ATF (Dexiron2)

Fluid capacity cm

Brush length mm (in) 10 (0.39) Wear limit mm (in) 3.5 (0.14) Commutator diameter mm (in) 22 (0.87) Limit mm (in) 21 (0.83) Commutator under cut mm (in) 1.5 (0.06)

(US

oz, Imp oz)

40 hp 50 hp

3 × 10-1/4 × 14 3 × 10-3/4 × 16 3 × 10-3/4 × 17 3 × 10-3/8 × 13 3 × 10-5/8 × 12 3 × 11-1/8 × 13 3 × 11-1/4 × 14 3 × 11-3/8 × 12 3 × 11-5/8 × 11 3 × 11-3/4 × 10

3 × 12-1/4 × 9

Model

3 × 10-1/4 × 14 3 × 10-1/4 × 15 3 × 10-1/4 × 16 3 × 10-5/8 × 13 3 × 11-1/4 × 14 3 × 11-1/2 × 13

3 × 12 × 11 3 × 12 × 12

434 (14.7, 15.3)

2-9

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