Tohatsu M 4c User manual

MANUAL

OWNER’S

OB No.003-11068-5

OWNER’S MANUAL

MTOHATSU CORPORATION

Address : 5-4, 3-chome, Azusawa, Itabashi-ku,

TOKYO, 174-0051 JAPAN

Phone : TOKYO (03)3966-3117

FAX : TOKYO (03)3966-2951

Website : www.tohatsu.co.jp

003-11068-51103NB

Printed in Japan

OM_E_M4C-5B_cover_131007.indd 1 10/8/13 10:05:40 AM

YOUR TOHATSU OUTBOARD MOTOR

OWNER REGISTRATION AND IDENTIFICATION

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TO THE EXTENT PERMITTED BY APPLICABLE LAW, YOUR OUTBOARD MOTOR

WILL NOT BE COVERED BY THE APPLICABLE LIMITED WARRANTY, IF THIS

PROCEDURE IS NOT FOLLOWED.

PRE-DELIVERY CHECK

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Limited Warranty

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Serial Number

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To You, Our Customer

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TOHATSU CORPORATION

6. Tilt up, tilt down and shallow water operationÊÊ°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°ÊÊÓx

ÈREMOVING AND CARRYING THE OUTBOARD MOTORÊÊ°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°Ê°ÊÊÓn

1. Steering friction

CONTENTS

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1. SPECIFICATIONS

2. NAMES OF PARTS

3. INSTALLATION

4.PRE-OPERATING PREPARATIONS

5.ENGINE OPERATION

REMOVING AND CARRYING THE OUTBOARD MOTOR

7.TRAILERING

8.ADJUSTMENT

9.INSPECTION AND MAINTENANCE

10.TROUBLESHOOTING

11.TOOL KIT AND SPARE PARTS

12.OPTIONAL ACCESSORIES

13.PROPELLER TABLE

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GENERAL SAFETY INFORMATION

INDEX

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NOTICE : DANGER/WARNING/CAUTION/Note

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EMERGENCY STOP SWITCH

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Failure to observe will result in severe personal injury or death, and possibly property damage.

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Failure to observe could result in personal injury or property damage.

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!7!2.).'

Failure to observe could result in severe personal injury or death, or property damage.

GENERAL SAFETY INFORMATION

!7!2.).'

Accidental activation of the Emergency Stop Switch (such as the tether being pulled out

in heavy seas) could cause passengers to lose their balance and even fall overboard,

or it could result in loss of power in heavy seas, strong currents, or high winds. Loss of

control while mooring is another potential hazard.

To minimize accidental activation of the Emergency Stop Switch, the 500 mm (20 inch.)

stop switch tether is coiled and can extended to a full 1,300 mm (51 inch.).

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SAFE OPERATION OF BOAT

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SERVICING, REPLACEMENT PARTS & LUBRICANTS

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MAINTENANCE

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MOUNTING

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!7!2.).'

SERIOUS INJURY IS LIKELY IF A PERSON IN THE WATER MAKES CONTACT WITH

A MOVING BOAT, GEAR HOUSING, PROPELLER, OR ANY SOLID DEVICE RIGIDLY

ATTACHED TO A BOAT OR GEAR HOUSING.

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SPECIFICATIONS

4C, 5B-D

MODEL 4C 5B-D

Item

Overall Length mm (in) ÇääÊÓÇ°È®

Overall Width mm (in) Î£äÊ£Ó°Ó®

Overall Height

S mm (in) £]ääÇÊÎ°È®

L mm (in) £]£Î{Ê{{°È®

UL mm (in)  £]ÓÈ£Ê{°È®

Transom Height S·L·UL mm (in) {ÎxÊ£Ç°£®Ê±ÊxÈÓÊÓÓ°£®Ê±ÊÈnÊÓÇ°£®

Weight

S kg (lb) Óä°äÊ{{®

L kg (lb) Óä°xÊ{x®

UL kg (lb)  Ó£°äÊ{È®

Output kW (Hp) Ó°Ê{® Î°ÇÊx®

Max. Operating Range rpm {]xääx]xää

Idle Speed in Forward Gear rpm nxä

Idle Speed in Neutral Gear rpm £]äää

Engine Type Ó-ÌÀi

Number of Cylinder £

Piston Displacement mL (Cu in) £äÓÊÈ°ÓÓ®

Bore x Stroke mm (in) xxÊÝÊ{ÎÊÓ°£ÇÊÝÊ£°È®

Exhaust System /ÀÕ}ÊÕLÊiÝ>ÕÃÌ

Lubrication System }iÊ"ÊÝi`Ê>Ãi

Cooling System ÀVi`ÊÜ>ÌiÀÊV}

Starting System >Õ>ÊÃÌ>ÀÌiÀ

Ignition System ÞÜiiÊ>}iÌÊ°°Ê}Ì

Spark Plug Ê*Ç-£äÊÀÊ*,Ç-£ä

Trim Position È

Fuel Mixing Ratio 1i>`i`Ê>ÃiÊxäÊ\ÊiÕiÊÓÃÌÀiÊ}iÊ"Ê£

Gear Oil mL (Cu in) iÕiÊi>ÀÊ"ÊÀÊ*Êx]Ê-ÊnäÊÌÊä]Ê>««ÀÝ°Ê£xÊ££°n®

Fuel 1i>`i`ÊÀi}Õ>ÀÊ}>ÃiÊ\Ê*Õ«Ê«ÃÌi`ÊnÇÊ"VÌ>iÊ

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Fuel Tank Capacity L (US gal) Ó°xÊä°ÈÈ® Ó°xÊä°ÈÈ®]Ê£ÓÊÎ°£Ç®ÊI

Gear Reduction Ratio Ó°£xÊ£ÎÊ\ÊÓn®

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



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



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

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4C, 5B-D

Installation

■Position... Above keel line

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Transom matching

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£!7!2.).'

Most boats are rated and certiﬁed in terms

of their maximum allowable horsepower,

as shown on the boat’s certiﬁcation plate.

Do not equip your boat with an outboard

motor that exceeds this limit. If in doubt,

contact your dealer.

Do not operate the outboard motor until it

has been securely mounted on the boat in

accordance with the instructions below.

Mounting the outboard motor on boat

INSTALLATION

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INSTALLATION

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• Before beginning the running test,

check that the boat with maximum

capacity loading ﬂoats on the

water in a proper attitude. Check

the position of water surface on

the driveshaft housing. If the water

surface is near the bottom cowling,

in high waves, water may enter the

engine cylinders.

• Incorrect outboard motor mounting

height or existence of underwater

object(s), such as hull bottom

design, bottom surface conditions

or underwater accessories, can

cause water spray possibly reaching

the engine through an opening of

the bottom cowling during cruising.

Exposing the engine to such

conditions for extended periods can

lead to severe engine damage.

!#!54)/.

Mounting bolts should be installed with

the bolt head at inside surface of the

transom. Mounting bolts installed with

the threaded end at the inside surface of

the transom can cause personal injury.

!#!54)/.

!7!2.).'

• Mounting the outboard motor

without following this manual can

lead to unsafe conditions such as

poor maneuverability, lack of control

or ﬁre.

• Loose clamp screws and/or mounting

bolts can lead to the release or

displacement of the outboard motor,

possibly resulting in lost of control

and/or serious personal injury. Be

sure that fasteners are tightened to

the speciﬁed torque (30 Nm (3.0kgf)

13ft·lb). Check the fasteners for

tightness from time to time.

• Be sure to use outboard mounting

fasteners included in the outboard

motor package or their equivalents

in terms of size, material, quality

and strength.

Tighten fasteners to the speciﬁed

torque (30 Nm (3.0kgf) 13ft·lb). Test

cruise to check if fasteners are

tightened securely.

• Outboard motor mounting must

be performed by trained service

person(s) using lift or hoist with

sufﬁcient capacity.

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Recommended gasoline types

Use of low-quality gasoline results in

a short engine life as well as starting

difﬁculties and other engine problems.

We recommend use for Fuel stabilizer.

!#!54)/.

Use of unleaded gasoline

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Consult an authorized dealer for details

on handling of gasoline, if necessary.

Gasoline and its vapors are very

ﬂammable and can be explosive.

When carrying a fuel tank containing

gasoline:

•Close the air vent screw of fuel tank

cap, or gasoline vapor will be emitted

through the air vent screw, creating a

ﬁre hazard.

•Do not smoke.

When or before refueling :

•Stop the engine, and do not start the

engine during refueling.

•Do not smoke.

•

Be careful not to overﬁll fuel tank. Wipe

up any spilled gasoline immediately

When or before cleaning the gasoline tank :

•Dismount fuel tank from the boat.

•Place the fuel tank away from every

source of ignition, such as sparks or

open ﬂames.

•Do the work outdoors or in well

ventilated area.

•

Wipe up any spilled gasoline immediately

After cleaning gasoline tank :

•

Wipe up any spilled gasoline immediately

•

If the fuel tank is disassembled for

cleaning, reassemble carefully. Imperfect

assembly may cause a fuel leak, possibly

leading to ﬁre or explosion

•Dispose of aged or contaminated

gasoline in accordance with local

regulations.

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PRE-OPERATING PREPARATIONS

Use of alcohol free gasoline

Use of gasoline containing alcohol can

cause engine starting and/or operating

difﬁculties, wear of and damages to

engine parts, and deterioration of

chemical parts, which may lead to

shortening of your outboard motor’s life.

!#!54)/.

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!7!2.).'

Do not ﬁll the fuel tank over capacity. The

rise of gasoline temperature may cause

gasoline to expand which, if overﬁlled, may

leak through air vent screw when it is open.

Leaking gasoline is a dangerous ﬁre hazard.

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PRE-OPERATING PREPARATIONS

2. Recommended engine oil

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ÀiVi`i`Êi°Ê,iviÀÊÌÊÞÕÀÊ

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ÃÌÀiÊi}iÊ°

Do not mix different brands of oil.

Mixing different brands of oil, or different

types of oil even if the brand is the same,

may cause gelling, resulting in possible

ﬁlter screen blockage. This could result

in serious engine damage because of

impaired lubrication performance.

!#!54)/.

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PRE-OPERATING PREPARATIONS

Engine oil – gasoline mixing

procedure

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■When portable fuel tank is used for

operation of outboard motor(s):



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>`Ê}>ÃiÊÜiÊ>`ÊiÛi°

■When fuel tank built in the boat

is used for operation of outboard

motor(s):

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●Do not use other than two stroke

engine oil with speciﬁed grade, or

the engine may be damaged.

●Do not use fuel prepared in other

than speciﬁed mixing ratio.

- Lack of engine oil can cause

severe engine trouble such as

piston seizure.

- Excess of engine oil can shorten

spark plug life, and/or cause

increase of noxious exhaust.

!#!54)/.

!7!2.).'

Loose cap or air vent plug can cause leak

of fuel during shaking the tank.

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9ÕÀÊiÜÊÕÌL>À`ÊÌÀÊ>`ÊÜiÀÊ

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V«iÌÃÊ>VVÀ`}ÊÌÊÌiÊ

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ÌiÊÌ>Li°

0 – 10

min

10 min –

3 hrs 3 – 5 hrs After

5 hrs

Throttle

Position Idle

Less

than 1/2

throttle

Less

than 3/4

throttle

Full

throttle

available

Speed

Cruising

minimum

speed

Approx.

500 –

3,500

rpm

Approx.

4,000

rpm.

Available

to operate

at wide

open

throttle

Fuel mix ratio for break-in

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●

During the break-in period, never run

the engine continuously at high speed.

●

After running-in is completed, select

the correct propeller so that the

engine speed is the recommended

range at the wide-opon throttle.

●After completing 5 hours of break-

in, replace the gear oil with new oil.

Refer to “Changing the gear oil” in

subsection (2), Periodic Inspection.

!#!54)/.

3. Break-in Ìi

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Do not operate the outboard motor

in closed area or area with no forced

ventilation.

Exhaust gas emitted by this outboard

motor contains carbon monoxide

that will cause death if inhaled

continuously. Inhaling the gas initially

causes symptoms such as feeling of

sickness, drowsiness and headache.

During operation of the outboard

motor:

•

Keep peripheral area well ventilated.

• Always attempt to stay on the

windward side of emission.

!$!.'%2

Operating the outboard motor without

break-in can shorten service life of the

product.

If any abnormality is experienced

during the break-in:

•

Discontinue the operation immediately.

•

Have the dealer check the product

and take proper action(s) if necessary.

!#!54)/.

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ENGINE OPERATION

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ENGINE OPERATION

!7!2.).'

In case engine starts in gear, do not

start cruising. Stop engine immediately

and consult an authorized dealer.

!7!2.).'

Do not operate the engine with gear

case out of water.

Severe personal injury, or engine

damage will result.

ENGINE OPERATION

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If the engine starts in gear, do not use

it. Contact an authorized dealer.

!#!54)/.

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ENGINE OPERATION

If the recoil starter fails to operate

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!7!2.).'

Be careful that your clothes or other

items do not get caught in the rotating

engine parts.

To prevent accident and injury, do not

re-attach the recoil starter after the

engine has been started using the

emergency starter rope. Be sure to put

the top cowl back on.

Immediately contact an authorized

dealer when reaching shore.

!7!2.).'

•

Be sure that no bystander(s) is within 2

meters from back of starting operator.

•

Do not operate the outboard motor with

top cowl removed from the power unit,

or contacting turning ﬂywheel which

can lead to serious personal injury.

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«ÀÌÊ`ÕÀ}ÊÜ>ÀÊÕ«°

If the engine is operated without water

discharging from the check port or idle

port, the engine may over heat.

!#!54)/.

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

Be sure to stop engine immediately

if cooling water check port is not

discharging water, and check if cooling

water intake is blocked. Operating

engine could lead to overheating

potentially leading to engine damage.

Consult an authorized dealer if the

cause cannot be found.

!#!54)/.

Ó£

2. Warming up the engine

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