Echo CS-352 User manual

01-34C-00 CS-352 1

SERVICE

MANUAL

SUPPLEMENT

CHAIN SAW

ECHO:

CS-352

(Serial

number

11000001-11999999)

(Serial

number

12000001-12999999)

(Serial

number

13000001-13999999)

INTRODUCTION

CONTENTS

page

We are constantly working on technical im-

provement of our products. For this reason,

technical data, equipment and design are

subject to change without notice. All speci-

fications and directions in this SERVICE

DATA are based on the latest product infor-

mation available at the time of publication.

1 SERVICE INFORMATION.............................. 2

1-1 Specification ............................................... 2

1-2 Technical data............................................. 3

1-3 Torque limits................................................ 4

1-4 Special repairing materials ......................... 4

1-5 Service limits............................................... 5

1-6 Special tools ............................................... 6

CARBURETOR ADJUSTMENT PROCEDURE

.... 7

2-1 General adjusting rules............................... 7

2-2 Presetting Idle adjust screw, L mixture needle

and H mixture needle ........................................ 7

2-3 Adjusting carburetor.................................... 9

Reference No. 01-34C-00

ISSUED: 201012

SERVICE INFORMATION

CS-352

1 SERVICE

INFORMA

TION

1-1

Speci

cations

Model

CS-352

Dimensions

Length*

mm(in)

396 (15.59)

Width mm(in)

232 (9.13)

Height mm(in)

268 (10.55)

Dry weight*

kg(lb)

4.0 (8.8)

Engine Type YAMABIKO, air-cooled, two-stroke, single cylinder

Rotation Clockwise as viewed from the output end

Displacement cm3(in3) 34.0 (2.075)

Bore mm(in) 38.0 (1.496)

Stroke mm(in) 30.0 (1.181)

Compression ratio 6.8

Carburetor Type Diaphragm horizontal-draft with auto-return choke

Model Walbro WT-992

Venturi size-Throttle bore mm(in) 11.11 - 14.3 (0.437 - 0.562)

Ignition Type CDI (Capacitor discharge ignition) system

Digital magneto

Spark plug BPM8Y

Starter Type Automatic rewind

Rope diameter x length mm(in) 3.0 x 920 (0.12 x 36.2)

Fuel Type Premixed two-stroke fuel

Mixture ratio 50 : 1 (2 %)

Gasoline Minimum 89 octane gasoline

Two-stroke air cooled engine oil ISO-L-EGD (ISO/CD13738), JASO M345-FC/FD

Tank capacity L (U.S.fl.oz.) 0.25 (8.5)

Exhaust Muffler type

Spark arrester muffler with catalyst

Clutch

Type

Centrifugal, 3-shoe slide with 3-tension spring

Guide bar / Saw chain lubrication type Pencil type Automatic oil pump

Oil Tank capacity L (U.S.fl.oz.) 0.26 (8.8)

Auto oiler

Type

Clutch related type

Sprocket Type

Spur

Number of teeth

Pitch in 3/8

* Without guide bar and saw chain.

Cutting devices

Guide bar

Part No. 12A0CD3745 14A0CD3752 16A0CD3757

Called length in

Gauge in

0.050

Saw chain

Type

OREGON 91VG / 91P

Number of drive links 45 52 57

Pitch in 3/8

Gauge in 0.050

CS-352

SERVICE

INFORMATION 3

1-2

Technical

data

Engine

Idling

peed

ide open throttle

peed*

lutch

gement

peed

000

+/-

300

700 -

200

Minimum†

RPM

3,800

Compression

pressure

MPa

(kgf/cm

)

(psi)

0.94 (9.6)

(136)

Ignition system

rk plug g

mm(in)

6 -

(

024 -

028)

Minimum

secondary

voltageat

1,500 RPM

kV 15.0

Primary

coil resistance

(RedProbe

on stopterminal of module)

ry coil r

nce

1.2

-1.6

1.3

-1.9

ole

hoe

ir g

Ignition

T-9000

meter

Carburetor

000

meter 1

meter 2

mm(in)

3 -

(

012 -

016

)

322

Idle adjust screw

initial setting turnsin** 11/2

Test Pressure,

minimum

MPa

(kgf/cm

)

(psi)

0.05 (0.5)

(7.0)

Metering lever h

Chain

oil

discharge

volumeat

7,000

RPM mm

(

)

mL/min(U.S.

.oz./min)

(

06) lower

Fixed 7.8

mL/min

BTDC: Before

top

dead cente

* With

in.guide barandproperly

adjusted saw

chain.

**Set

idle

adjust screw

to the point that itstip

contacts

throttle plate

before

initial setting.

† Ifclutch

engagement speed is

lower than minimum

RPM, replace

clutch

assembly

with new one.

SERVICE INFORMATION

CS-352

1-3 Torque

limits

Descriptions

Size

kgf•cm

N•m

in•lbf

Starter

system

Starter case

30 - 50

3 - 5

26 - 45

Collar

35 - 50

3.5 - 5

30 - 45

Ignition

system

Magneto rotor (Flywheel)

250 - 290

25 - 29

220 - 255

Ignition coil

M5*

30 - 45

3 - 4.5

26 - 40

ON/OFF switch

15 - 30

1.5 - 3

13 - 26

Spark plug

M14

130 - 170

13 - 17

110 - 150

Fuel

system Carburetor

35 - 50

3.5 - 5

30 - 45

3 - 4.5

26 - 40

Clutch Clutch hub

LM10

230 - 260

23 - 26

200 - 230

Engine

Crankcase

M5*

60 - 100

6 - 10

60 - 90

Engine mount

70 - 110

7 - 11

60 - 95

Muffler

70 - 90

7 - 9

60 - 80

Intake insulator

50 - 70

5 - 7

45 - 60

Others

Front handle

30 - 50

3 - 5

26 - 45

Rear handle assembly

30 - 50

3 - 5

26 - 45

Brake lever

25 - 35

2.5 - 3.5

22 - 30

Brake cover

15 - 25

1.5 - 2.5

13 - 22

Compression spring

30 - 50

3 - 5

26 - 45

Sprocket guard

10 - 20

1 - 2

9 - 17

Guide bar

200 - 230

20 - 23

175 - 200

Regular bolt, nut and screw

6 - 10

0.6 - 1

5 - 9

15 - 25

1.5 - 2.5

13 - 22

25 - 45

2.5 - 4.5

22 - 40

45 - 75

4.5 - 7.5

40 - 65

LM: Left-hand thread *Apply special repairing materials

1-4 Special

repairing materials

Material

Location

Remarks

Adhesive

Ball bearing outer / crankcase

Loctite #675 or equivalent

Stud bolt

Liquid gasket

Crankcase seams

ThreeBond 1207D

Thread locking sealant

Starter pawl

Loctite #242, ThreeBond #1324 or equivalent

Ignition coil

Loctite #222, ThreeBond #1342 or equivalent

Grease

Clutch needle bearing

Lithium based greaseor ECHO XTended

Protection

Lubricant

Starter center shaft

Chain brake (metal contact part)

Molybdenum grease (approx.1 gram)

5K097

CS-352 SERVICE INFORMATION 5

1-5 Service

Limits

A B C D

5K177 5K083 5K084

5K081

E F G H

5K082 5K016

5K025

5K178

K L M P

5K173

5K174

5K190

5K191

Description mm (in)

A Cylinder bore When plating is worn and aluminum can be seen

B Piston outer diameter Min. 37. 91 (1.493)

C Piston pin bore Max. 8. 035 (0.3163)

D Piston ring groove Max. 1. 6 (0.063)

E Piston ring side clearance Max. 0. 1 (0.004)

F Piston pin outer diameter Min. 7. 98 (0.3142)

G Piston ring width Min. 1. 45 (0.057)

H Piston ring end gap Max. 0. 5 (0.02)

K Con-rod small end bore Max. 12. 000 (0.4724)

L Crankshaft runout

Max. 0. 02

(0.001)

Sprocket bore

Max.

10. 80

(0.4252)

N Clutch drum bore Max. 61. 5 (2.42)

P Sprocket wear limit Max. 0. 5 (0.02)

SERVICE INFORMATION

CS-352

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