Echo CS-2600ES User Manual

CS-2600ES, CS-2700ES00-26B-02

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(Serial number : 36000001 and after)

INTRODUCTION

We are constantly working on technical
improvement of our products. For this reason,
technical data, equipment and design are
subject to change without notice. All
specifications, illustrations and directions in
this SERVICE DATA are based on the latest
products information available at the time of
publication.
ECHO SERVICE MANUAL Ord. 401­22(Model : CS-2600) contains lots of
information for servicing this model.

CONTENTS

page

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

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

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

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

1-4 Special repairing materials.........................5

1-5 Service limits .............................................. 6

1-6 Special tools...............................................7

2 EMISSION ADJUSTMENT GUIDE ...............8

2-1 General adjusting rules .............................. 8

2-2 Presetting idle adjust screw, L mixture needle

and H mixture needle....................................... 8

2-3 Adjusting carburettor................................ 10

Reference No. 00-26B-02

REVISED: 200512

Issued:2004 1 2

INDEX

CS-2600ES

2

1 SERVICE INFORMATION

1-1 Specifications

Model CS-2600, CS-2600ES CS-2700ES

Dimensions Length* mm(in) 257 (10.1) 380 (15.0)

Width mm(in) 219 (8.6) 220 (8.7)

Height mm(in) 210 (8.3) 230 (9.1)
Dry weight* kg(lb) 2.9 (6.4) 3.1 (6.8)
Engine Type KIORITZ, air-cooled, two-stroke, single cylinder

Rotation Clockwise as viewed from the output end

Displacement cm3(in3) 26.9 (1.641)

Bore mm(in) 35 (1.378)

Stroke mm(in) 28 (1.102)

Compression ratio 5.5
Carburettor Type Diaphragm horizontal-draught with auto-return choke

Model (Walbro) WT-696, WT-696A, WT-696B WT-697A, WT-697B

Venturi size-Throttle bore mm(in) 9.53 - 14.3 (0.375 - 0.563)
Ignition Type CDI (Capacitor discharge ignition) system

Spark plug BPMR-7A
Starter Type ES (Effortless)-start

Rope diameter x length mm(in) 3.5 x 750 (0.14 x 29.5)
Fuel Type Premixed two-stroke fuel

Mixture ratio 50 : 1 (2 %)

Petrol Minimum 89 octane petrol (RON)

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

Tank capacity L (U.S.fl.oz.) 0.39 (13.2) 0.24 (8.1)
Clutch Type Centrifugal, 3-shoe slide with 3-tension spring
Guide bar / Saw chain lubrication type Automatic with volume adjuster
Oil Tank capacity L (U.S.fl.oz.) 0.16 (5.4)
Sprocket Type Spur

Number of teeth 6 (Sproket nose bar) 8 (for Carving bar)

Pitch in 3/8 (Sproket nose bar) 1/4 (for Carving bar)

SERVICE INFORMATION

with electronic timing advancer

CS-2700ES

* Without guide bar and saw chain.

Cutting devices Sproket nose bar Carving

Guide bar Type 20RC50-3/8 25RC50-3/8 30RC50-3/8 25C50

Called length cm 20 25 30 25

Gauge in 0.050

Saw chain Number of drive links 35 40 47 60

Pitch in 3/8 1/4
Gauge in 0.050

CS-2600ES
CS-2700ES

1-2 Technical data

Model CS-2600, CS-2600ES CS-2700ES

Engine

Idling speed r/min 3000 - 3600
Operating speed r/min 8500 - 9000
High speed (No load full throttle)* r/min 10500 - 11500
Clutch engagement speed r/min 4450 - 4750
Compression pressure MPa (kgf/cm2) (psi) 0.69 (7.0) (100)

Ignition system

Spark plug gap mm(in) 0.6 - 0.7 (0.024 - 0.028)
Minimum secondary voltage at 1500 r/min kV 15
Secondary coil resistance kΩ 1.2 - 1.8
Pole shoe air gaps mm(in) 0.30 - 0.40 (0.012 - 0.016)
Ignition timing at 1500 r/min °BTDC 12

at 7500 r/min °BTDC 29

Carburettor

Idle adjust screw initial setting turns in** 1 7/8 1 7/8
L mixture needle initial setting turns back 2 3/8 2 3/8
H mixture needle initial setting turns back 2 3/8 2 1/2
Test Pressure, minimum MPa (kgf/cm2) (psi) 0.05(0.5)(7.0)
Metering lever height mm(in) 1.65 (0.06) lower than diaphragm seat

Chain oil discharge volume at 7000 r/ min Adjustable: 1.5 - 13 (0.05 - 0.40)

mL/min(U.S.fl.oz./min) (Factory set 7 mL/min)

BTDC: Before top dead centre.
*With 25cm guide bar and saw chain.

**Set idle adjust screw to contact throttle plate before initial setting.

SERVICE INFORMATION

3

CS-2600ES

4

1-3 Torque limits

Descriptions Size kgf•cm N•m in•lbf
Starter Starter pawl M5* 40 - 60 4 - 6 35 - 50

system
Ignition Magneto rotor (Flywheel) M8 160 - 200 16 - 20 140 - 175

system

Fuel Carburettor M5 30 - 45 3.0 - 4.5 26 - 40
system

Clutch Clutch hub LM10 230 - 260 23 - 26 200 - 230
Engine Crankcase M5*

Dust cover (Only CS-2600) M4** 10 - 20 1 - 2 9 - 18
Muffler M5 70 - 100 7 - 10 60 - 90

Others Auto-oiler M4 15 - 25 1.5 - 2.5 13 - 22

Regular bolt, nut and screw M3 6 - 10 0.6 - 1.0 5 - 9

Starter case M4** 10 - 20 1 - 2 9 - 18

Ignition coil M5* 30 - 45 3.0 - 4.5 26 - 40
Spark plug M14 130 - 170 13 - 17 115 - 150

Intake bellows M5 35 - 50 3.5 - 5.0 30 - 44

Engine mount M5 70 - 110 7 - 11 60 - 95

Muffler cover M4** 10 - 20 1 - 2 9 - 18

Front handle M5** 20 - 40 2 - 4 18 - 35
(CS-2600ES) M4** 10 - 20 1 - 2 9 - 18

(CS-2700ES) M4** 8 - 12 0.8 - 1.2 7 - 10

Top handle (CS-2600ES) M4** 10 - 20 1 - 2 9 - 18
Rear handle (CS-2700ES) M4** 10 - 20 1 - 2 9 - 18
Top handle assembly
(CS-2600ES)
Rear handle assembly
(CS-2700ES)
Brake lever (Hand guard) M5 25 - 45 2.5 - 4.5 22 - 40
Chain catcher M5** 20 - 40 2 - 4 18 - 35
Guide bar stud M8 180 - 250 18 - 25 130 - 220
Guide bar M8 200 - 230 20 - 23 175 - 200

SERVICE INFORMATION

†

M4** 20-30 2-3 18-26

M4** 20-30 2-3 18-26

M4 15 - 25 1.5 - 2.5 13 - 22
M5 25 - 45 2.5 - 4.5 22 - 40
M6 45 - 75 4.5 - 7.5 40 - 65

55 - 95 5.5 - 9.5 48 - 83

CS-2700ES

LM: Left-hand thread *Apply thread locking sealant (See next page) ** Tapping screw

†

The torque differences among four bolts should not exceed 20 kgf•cm (2Nm, 17in•lbf) on one cylinder or

crankcase.