Yamaha ET300E Manual

LlT-12618-00-33

•

YAMAHA

SNOWMOBILE

SUPPLEMENTARY

SERVICE

MANUAL

8L3-28197-10

FOREWORD

This

supplementary

service manual

for

ET300E has been published

sup-

plement

the

ET300D

supplementary

service manual (8KO-

28197

-10)

For

complete

information

on service procedures,

is necessary

use

this

Supplementary

service

Manua

together

with

the

following

manuals.

ET300C

Service

Manual

(8H9-28197-10)

ET300D

Supplementary

Service

Manual

28197

-10)

NOTE:

----

------------

--------

------------

The Research and Engineering

Department

Yamaha are

continually

striving

further

perfect all

models

Improvements

are

modifications

are

therefore

inevitable

light

this

fact

all specifications wi

thin

this

manual are

subject

change

without

notice.

Information

regarding changes is

forwarded

all

Authorized

Yamaha Dealers as soon as available.

SERVICE

DEPT.

INTERNATIONAL

DIVISION

YAMAHA

CO.,

LTD.

Particularly

important

information

distinguished

this

manual by

the

following

notations:

NOTE:

A NOTE provides key

information

make procedures easier or clearer.

YAMAHA

ET300E

SUPPLEMENTARY

SERVICE

MANUAL

1st

Edition,

APRIL,I980

ALL

RIGHTS

RESERVED

YAMAHA

MOTOR

COMPANY,LTD

JAPAN

PRINTED

JAPAN

lIT-12618

)

CONTENTS

NEW

SERVICE PROCEDU

...

........

...

..........-.

....

......

....

...

2. SPECIFICATIONS

...

............

...

....

........

...

......

.......

....

...

.. 2

WIRE

ROUTING

DIAGRAM

....

.....

....

...

......

..........

.......

...

.......... 6

C 1.

NEW

SERVICE

PROCEDURE

(New

service

procedure

applied

the

1981

ET300E.)

A .

Piston

ring

inspection

a result

the

recent

change

the

piston

ring,

item

10,

page 2-8

the

ET300C

service

manual

(8H9-28197

10)

should be

read as

lows

10. Piston ring ins

pect

ion

Check rings

for

scoring.

any severe

scratches are

noticed,

replace ring set.

Measure

ring end

gap

in free position. If

beyond

tolerance,

replace ring set.

Ring end gap, free

Top Approx.

6.5

(026

in)

Second

Approx

7.5

(0.

in)

-1

c. Push

the

ring

into

the

bore and

check

end gap clearance

with

a feeler

gauge

beyond

tolerance, replace ring set.

Ring end gap, installed

Minimum

Maxim

Top

0.30

0.50

(0012

in)

(0020

in)

Second

0.30

0.50

(0012

in)

(0020

in)

SPECIFICATIONS

NOTE: *

.....

New

specification

(Compared

with

1980

ET300D)

General )

Model

ET300E

Model

(IB.M

No.) * ET300E

(8L3)

Frame

10.

starting

number

8L3-020101

Engine

10.

starting

number

* E2

020

101

Dimension:

Overall

length

2,385

(939

in)

Overall

width

(std)

935

(36

.8 in)

Overall

height

(w/windshield)

965

(380

in)

Engine

Description:

Engine

type

Fan cooled

two-stroke

5-port.

twin

cylinders

Engine

model

E294

Displacement

294

(17.94

cu.in)

Bore X Stroke

(

2.2

1 X

2.35

in) )

Effective

compression

ratio 6.5 : 1

Starting

system Recoil hand

starter

Ignition

system C.D.I

Lubrication

system

"Autolub

e" oil inj

ection

Cylinder head

Combustion

chamber

volume

18.3

cu.in)

with

spark

plug

Compression

chamber

type

Dome

+ Squish

Head

gasket

thickness 0.5

(0.02

in)

Cylinder:

Material

Cast iron sleeves

aluminum

Bore size

(2.21 in)

Taper

limit

(0.

0020

in)

Out

round

limit

0.01

(0.0004

in)

Piston:

Piston

skirt

clearance

(Measuring

point)

040~

045

0016~

0018

in)

(10

from

pis

ton

skirt

end)

Piston oversize 1st

56.25

(2213

in)

2nd

56.50

(2224

in)

3rd

56.

(

223

4 in)

4th

(2244

in)

Piston pin

out

side

diameter

length

¢16

(¢0.630

X 1

.85

in)

Piston ring:

Piston ring design (Top) Keystone

Piston ring design (2nd) Plane

Ring end gap (installed) (Top) * 0.1 5

(0.

006

014

Ring end gap (installed) (2nd) 0.

0.50

(0.012

0.0

20 in)

* Ring groove side clearance (2nd) 0.

0.06

(00008

.00

24 in)

Sma

ll end bearing:

Type Needle b

ring

Big end bearing:

Type Needle bearing

-2

Crankshaft:

c Crankshaft

assembly

width

(A)

160

±0 1

(630

0.004

in)

Crankshaft

assembly

width

(F)

0.05

(2.047

0002

In)

Crankshaft

deflection

(D) 0.

(D-1)

0.04

(D-2)

0.04

-3)

0.03

-4)

Connecting

rod

big

end side clearance

(C)

0.25

0.35

(001

0.014

in)

Connecting

rod

small

end

deflection

(P)

2.0

(0079

in)

--p

D- 1 D-4

I J

11:

I,'\

Crank pin

outs

ide

diameter

X length ¢

(¢0866

2008

in)

Crank pin

type

Solid shaft assembly

type

with

serration

Crank bearing

type

(Left) X

q'ty

#6306

special 1 pc.

Crank bearing

type

(Center) X

q'ty

#6206

special X 2 pcs.

Crank bearing

type

(Right) X

q'ty

#6305

special X 1 pc.

Crank oil seal

type

(Left) X

q'ty

FPJ

8 2TS X 1 pc.

Crank oil seal

type

(Center) X

q'ty

Labyrinth seal X 1 pc.

Crank oil seal

type

(Right) X

q'ty

FPJ

8TS X 1 pc.

Carburetor:

Type &

manufacturer/quantity

B38-32

MIKUNI X 1 pc.

I.D.

Mark

8H901

Main

jet

(MJ)

#210

Pilot

jet

(PJ)

#90

Pilot

screw

(PS)

1/2

turns

out

Throttle

valve

(ThV)

#185

r Valve seat (V.S.) ¢1 .5

(0059

in)

Float

height

± 1

(098

0.04

in)

Idling engine speed

1600

r/ min

Main

jet

setting

chart

ve -

"C -

e ooe

e 20 e

Altitude

1_ 4 '

' FI 1

'FI

#200

Sea level #

210

1--

#220

- - IStd.1

#200

600m

12000

ftl

210

IStd.)

#190

1200m

14000

ftl

#200

-#2

10- -

IStd l -

#180

1800m

16000

#190

#200

2400m

18000

ftl

#190

Ii180

#200

#180

3000m

110000

or more #190

-3-

Lubrication:

Autolube

pump

-Color code

Autolube pump -Minimum stroke

Autolube

pump

Maximum

stroke

Autolube

pump

-Reduction ratio

Autolube

pump

Output

Min/200

strokes

Autolube

pump

Output

Max/200

strokes

Autolube

pump

wire

free

play

Oil

tank

capacity

Oil grade

Drive and track suspension

Transmission:

Type

Drive ratio

Engagement rpm

Primary spring:

Part No.

Color code

Secondary spring:

Part No.

Color code

Secondary spring pre-load

(twist)

Sheave di::;tance

Sheave

off-set

V-belt

width

and

outer

line

length

V-belt

wear

limit

Track suspension:

Type

Damper

type

Spring

color

code (Rear)

Slide runner

wear

limit

Track

width

Track

deflection

Length on ground

Wheel

sprocket

material and

number

teeth

Stopper

band

length

condary drive:

Type

Reduction ratio

Chain pitch X

Number

links

Free play

Chain housing oil

quantity

Chain housing oil grade

Brake:

Type

Brake pad thickness

pad

wear

limit

Gap

between

pad and disc

Blue

0.20

0.25

(0.0079

0.0098

in)

1.65

1.87

(00650

0.0736

in)

1/36

0.50

0.63

(0.0169

0.0213

oz)

4.15

4.70

(0.1403

0.1589

oz)

± 1

(098

0.04

in)

idle

2.4

liter

(25

us. qt)

YAMALUBE

2-cycle

V-belt

automatic

centrifugal

engagement

3.5

: 1

1 1

3100

3300

r/min

90501-55345

Red-Red

90508-40080

No.

painted

160

266

±2

(10.47

0.08

in)

± 1

(0.43

0.04

in)

31.6

1,099

(1.24

43.3

in)

(1.02

in)

Slide rail suspension

Oil and gas

damper

No.

painted

(0394

in)

380

(15

in)

mm/l

(098

1.18

in/22

Ib)

650

(256

in)

Polyethylene

210

(827

in)

Chain

(#40K-l)

22/13

692)

12.7

(05

in) X

60L

+5 +0.2 .

- 2

(0.4

008

In)

450

(15.2

oz)

Gear oil API

"GL3"

(SAE

#75

85)

Disc brake

7.3

(0.287

in)

1.0

(004

in)

0.2

1.0

(0008

0.039

in)

-4

)

Chassis

c Frame:

Material

Aluminum

+ Steel I

Steering system'

Caster (ski

column)

Camber 0°

r S

length

width

thick

980

120

X 1.6

(38.6

4.7

0.06

in)

stance

800

(31.5

in)

Ski

toe

out

(O~

in)

Steering linkage type Tie-rod

Lock

lock angle (ski) Right ski,

27.6

24.8

Left ski,

248

27.

6°

Lock

lock

angle (steering

column)

Right:

54.3

Left:

56.3

Front suspension:

Type Leaf spring

Damper

type

Oil

damper

Fuel

tank

Capacity

22.7

liter

(6 U

gal)

Fuel grade Regular gasoline

Electrical

Ignition

system:

Type-

flywheel

magenta

.D.

type)

Model/m

nuf

act

F3T352

MITSUBI

SHI

Voltage

12V

Pulser coil resistance

9.00

at 20 °C

(68

° F)

(Whit

/Red

-Black)

harging

coil resistance

350n

°C (

(Bro

-Black)

Charging coil resistance

15.00

20 °C (68°

(Blue-Black)

Ignition

timing:

B.T.D.C. 1.4 ± 0.1

(0.055

± 0

.00

4 in)

Ignition

coil:

Model:

Manu

facturer

CM62

-2

0 HITACHI

YW-

51 TOYO DENSO

Spark

gap

(0.4

in)/

300

r/min

+--

(0.6

in)/3,000

min

+--

ima

winding

resistance

0.150

°C

(68

0.120at20

°C

(68

° F)

eco

ndary

winding

resistance

3.6k

O at

°C (

40kO

°C

(68

° F)

ode

(Yes

No) No

+--

Spark plug:

Type &

quantity

NGK

BR-9ES

X 2 pcs.

Spark

plug

gap

0.8

(0.

028

0.031

in)

Spark

plug

cap:

Type Rubber

type

with

noise suppressor

c Noise suppressor resistance 5kO at

°C

(68

°F)

C.D.

unit:

Model/Manufacturer

8H4-20

/MI

TSUBISHI

Lighting

system:

Lighting

output

12V-l00W

Lighting

coil resistance

0.190

°C

(68

(Yellow-Black)

c H

eadlight

type

Semi

shield

wattage/q'ty

12V

-60

60W

X 1 pc.

Tail/stop

light

wattage

23W

A.c. regulator:

Model/manufactur

TRIZ-24B/HITACHI

S8516B

/TO

SHIBA

Voltage

3.8

0.5V

-5

)

......

)

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