CS-270WES | Service manual | Echo 1

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CS-270WES | Service manual | Echo 1 | Manualzz

00-26C-01

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.

E C H O S E R V I C E M A N U A L O r d .

401-22(Model : CS-2600) contains lots of information for servicing this model.

CONTENTS

page

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

1-1 Specifi cation ............................................... 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 CARBURETTOR ADJUSTMENT PROCEDURE ........ 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.

00-26C-01

R E V I S E D : 2 0 0 8 0 4

ISSUED: 200703

1

0

2

SERVICE INFORMATION

CS-260TES

CS-270WES

1 SERVICE INFORMATION

1-1 Specifi cations

Model

Dimensions Length*

Width

Height

Dry weight*

Engine Type mm(in) mm(in) mm(in) kg(lb)

Rotation

Displacement cm

3

(in

3

Bore

Stroke

CS-260TES

257 (10.1)

219 (8.6)

210 (8.3)

2.9 (6.3)

CS-270WES

380 (15.0)

220 (8.7)

230 (9.1)

3.1 (6.8)

KIORITZ, air-cooled, two-stroke, single cylinder

Clockwise as viewed from the output end mm(in) (1.378) mm(in) (1.102)

Carburettor Type

6.4

Diaphragm horizontal-draught with auto-return choke

Model WT-843

Venturi size-Throttle bore mm(in)

WT-845

9.53 - 14.3 (0.375 - 0.563)

Ignition Type

Spark

Digital Magneto : CDI system

BPMR-7A

Starter Type

Rope diameter x length mm(in)

Fuel Type

Mixture ratio

Petrol

Two-stroke air cooled engine oi l

Clutch

Tank capacity

Type

L (U.S.fl .oz.)

Guide bar / Saw chain lubrication type

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

Auto oiler Type

Sprocket Type

Number of teeth

Pitch in

3.5 x 750 (0.14 x 29.5)

Premixed two-stroke fuel

50 : 1 (2 %)

Minimum 89 octane petrol (RON)

ISO-L-EGD (ISO/CD13738), JASO FC

0.24 (8.1)

Centrifugal, 3-shoe slide with 3-tension spring

Automatic with volume adjuster

0.16 (5.4) clutch related type

Spur

6 (Sproket nose bar), 8 (for Carving bar)

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

* Without guide bar and saw chain.

Cutting devices Sproket nose bar Carving

Guide bar Type

Called length

20RC50-3/8 cm 20

25RC50S-3/8 30RC50M-3/8

25 30

25C50

25

Gauge

Saw chain Number of drive link in

35 40

0.050

47 60

Gauge in 0.050

CS-260TES

CS-270WES SERVICE INFORMATION

1-2 Technical data

Model

Engine

Operating speed r/min r/min

High speed (No load full throttle)*

Clutch engagement speed

Compression pressure r/min r/min

MPa (kgf/cm

2

) (psi)

Ignition system

2800 - 3600

8500 - 9000

11000 - 12500

4450 - 4750

0.85 (8.7) (124)

Spark plug gap mm(in)

Minimum secondary voltage at 1500 r/min kV

Secondary coil resistance

Pole shoe air gaps kΩ mm (in)

Ignition timing at 1500 r/min at 3000 r/min at 8000 r/min at 12000 r/min

°BTDC

°BTDC

°BTDC

°BTDC

0.6 - 0.7 (0.024 - 0.028)

15

1.2 - 1.8

0.30 - 0.40 (0.012 - 0.016)

25

20

36

25

Carburettor

Idle adjust screw initial setting

L mixture needle initial setting turns in** turns back

H mixture needle initial setting

Test Pressure, minimum turns back

MPa (kgf/cm

2

) (psi)

2 1/8

1 5/8

1 7/8

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 speed screw to the point that its tip just contacts throttle plate before initial setting.

3

4

SERVICE INFORMATION

CS-260TES

CS-270WES

1-3 Torque limits

Descriptions

Starter Starter pawl system

Starter case

Size

M 5*

M 4**

Ignition Magneto rotor (Flywheel) M 8 system

Ignition coil M 5*

Spark plug M 14

Fuel system

Carburettor

Intake bellows

Clutch Clutch hub

Engine Crankcase

M 5

M 5

LM 10

5*

Engine mount M 5

Dust cover

(Only CS-260TES)

M 4**

Muffl er

Muffl er cover

M 5

M 4**

Others Auto-oiler

Front handle

(CS-260TES)

M 4

M 5**

M 4**

(CS-270WES) M 4**

Top handle (CS-260TES) M 4**

Rear (CS-270WES) M 4**

M 4** Top handle assembly

(CS-260TES)

Rear handle assembly

(CS-270WES)

M 4**

Brake lever (Hand guard)

Chain catcher

Guide bar stud

Guide bar

Regular bolt, nut and screw

M 5

M 5**

M 8

M 8

M 3

M 4

M 5

M 6 kgf•cm

40 - 60

10 - 20

160 - 200

30 - 45

130 - 170

30 - 45

35 - 50

230 - 260

55 - 95

70 - 110

10 - 20

70 - 100

10 - 20

15 - 25

20 - 40

10 - 20

8 - 12

10 - 20

10 - 20

20 - 30

20 - 30

25 - 45

20 - 40

180 - 250

200 - 230

6 - 10

15 - 25

25 - 45

45 - 75

N•m

4 - 6

1 - 2

16 - 20

3.0 - 4.5

13 - 17

3.0 - 4.5

3.5 - 5.0

23 - 26

5.5 - 9.5

7 - 11

1 - 2

7 - 10

1 - 2

1.5 - 2.5

2 - 4

1 - 2

0.8 - 1.2

1 - 2

1 - 2

2 - 3

2 - 3

2.5 - 4.5

2 - 4

18 - 25

20 - 23

0.6 - 1.0

1.5 - 2.5

2.5 - 4.5

4.5 - 7.5

18 - 26

22 - 40

18 - 35

130 - 220

175 - 200

5 - 9

13 - 22

22 - 40

40 - 65

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.

in•lbf

35 - 50

9 - 18

140 - 175

26 - 40

115 - 150

26 - 40

30 - 44

200 - 230

48 - 83

60 - 95

9 - 18

60 - 90

9 - 18

13 - 22

18 - 35

9 - 18

7 - 10

9 - 18

9 - 18

18 - 26

CS-260TES

CS-270WES SERVICE INFORMATION

5

1-4 Special repairing materials

Material

Adhesive

Location Remarks

Ball bearing outer / crankcase Loctite #675 or equivalent

Liquid gasket Crankcase seams

Thread locking sealant Starter pawl screws

Loctite #515: 990610-00051 or equivalent

Loctite #242, Three bond 1324 or equivalent

Ignition coil

Crankcase bolts

Loctite #222, Three bond 1342 or equivalent

Clutch needle bearing

Rear handle cushion

Rewind spring

Lithium based grease

Starter center shaft

Chain brake (metal contact part) Molybdenum grease (approx. 1 gram)

6

1-5 Service Limits

A B

SERVICE INFORMATION

C D

CS-260TES

CS-270WES

E

F G H

K L M

N

P

A Cylinder bore

B Piston outer diameter

C Piston pin bore

D Piston ring groove

E Piston ring side clearance

F Piston pin outer diameter

G Piston ring width

H Piston ring end gap

K Con-rod small end bore

L Crankshaft runout

M Sprocket bore

N Clutch drum bore

P Sprocket wear limit

Min.

Max.

Max.

Max.

Min.

Min.

Max.

Max.

Max.

Max.

Max.

Max.

1

2

3

4 mm (in)

When plating is worn and aluminium can be seen

34.91 (1.374)

8.030 (0.3161)

1.6 (0.063)

0.1 (0.004)

7.980 (0.3142)

1.45 (0.057)

0.5 (0.02)

11.025 (0.4341)

0.02 (0.001)

0.05 (0.0020)

55.5 (2.19)

0.5 (0.02)

CS-260TES

CS-270WES

1-6 Special tools

1

6

11

SERVICE INFORMATION

2

3

a = 3 mm a = 4 mm

4

a

7

8

b

5

9

1.65

0.4

1.35

1.5

7

12 13 10

14

15

00 00

26 26

16

17

18

19

0

5

0

0.4

M

Pa

20

21

91

01

9

Ign itio n A ir G

#.014

ap

Gau ge m

P/N

91

004

Key Part Number Description Used for:

1 897801-33330 Tachometer PET-1000 Measuring engine speed to adjust carburettor

2 895612-79920 L-hex wrench (3 mm) Removing and installing hex. socket bolt (M4)

3 895610-79920 L-hex wrench (4 mm) Removing and installing hex. socket bolt (M5)

4 897559-02831 T-hex wrench (4 mm) Removing and installing hex. socket bolt (M5)

5 897501-03938 Puller Removing magneto rotor

6 897702-30131 Piston pin tool

7 897701-06030 Bearing wedge

Removing and installing piston pin

Removing and crankshaft ball bearings

8 897705-11520 Bearing tool Replacing needle bearing on con-rod small end

9 897563-19830 Metering lever gauge Measuring metering lever hight on carburettor

10 897708-19835 Worm puller

11 Y089-000010 Worm inserter

Removing auto-oiler worm

Installing auto-oiler worm

12 897726-09130 Oil seal tool

13 897800-79931 Spark tester

14 897803-30132 Pressure tester

15 X640-000011 Clutch tool

Installing oil seals

Checking ignition system

Testing carburettor and crankcase leakage

Removing and assembling clutch assembly

16 897826-16131 Pressure rubber plug Plugging intake port to test crankcase / cylinder leakages

17 897828-12330 Pressure rubber plug Plugging intake port to test crankcase / cylinder leakages

18 897835-16131 Pressure connector

19 91037 Compression gauge

Checking crankcase and cylinder leakages

Measuring cylinder compression

20 91004

21 91019

Module air gap gauge Adjusting pole shoe air gaps

Limiter cap tool Removing and installing limiter cap

8

SERVICE INFORMATION

CS-260TES

CS-270WES

2 CARBURETTOR ADJUSTMENT PROCEDURE

2-1 General adjusting rules

A. Before starting the unit for adjustment, check the following items.

1. The correct spark plug must be clean and properly gapped.

2. The air fi lter element must be clean and properly installed.

3. The muffl er exhaust port must be clear of carbon.

4. The fuel lines, tank vent and fuel fi lter are in good condition and clear of debris.

5. The fuel is fresh ( > 89 octane : RON) and properly mixed at 50 : 1 with “ISO L-EGD” or “JASO FC” 2-stroke oil.

6. The recommended bar and chain must be installed to the power head, and properly tensioned.

: Make sure of proper installation of guide bar and saw chain when adjusting carburettor, or serious engine damage will occur due to overspeeding.

B. Adjust carburettor turning L and H mixture needles with limiter caps within the moving range (approx.

90°) and idle adjust screw. When engine does not run correctly after this adjustment, proceed to the next step (2-2).

C. After adjusting carburettor according to the steps 2-2 and 2-3, the limiter cap(s) must be installed on L and/or H mixture needle(s) to comply with Emission Directive.

2-2 Presetting idle adjust screw, L mixture needle and H mixture needle

Tools Required : Small screwdriver with 2.5 mm blade, electronic tachometer P/N 897801-33330, limiter cap removal tool with 2.5 mm left-hand thread P/N 91019. Parts Required : (2) limiter caps

P/N P003-000010.

1. Turn the L and H mixture needles anticlockwise to rich side stop and meet limiter caps tabs (A) with locating slot (B), using 3 mm blade screw driver.

(B)

H

(A)

(A)

L

(B)

2. Screw left hand thread of limiter cap tool 91019 into centre hoIe of limiter cap anticlockwise until tab of the limiter cap just come out from locating slot.

NOTE : If cap tabs (A) misalign with locating slots

(B), there is a chance to strip thread. When the thread is stripped by limiter cap tool, screw 3 mm wood screw in the stripped centre hole of the limiter cap, and pull off the cap.

(continued)

CS-260TES

CS-270WES SERVICE INFORMATION

9

2-2 Presetting idle adjust screw, L mixture needle and H mixture needle (continued)

3. Remove the limiter cap tool from the limiter cap turning the tool clockwise as the limiter cap is remained there.

NOTE : If the limiter cap were pulled out completely, there is a chance that the other mixture needle would turn and limiter cap tab would misalign with locating slot when screwing the limiter cap tool into centre hole of the other limiter cap.

4. Screw thread of limiter cap tool 91019 into other centre hole of the other limiter cap anticlockwise until the limiter cap is come out from the mixture needle completely. Remove the limiter cap from limiter cap tool turning clockwise. Screw thread of limiter cap tool 91019 into centre hole of previous limiter cap to pull out completely.

5. Turn L and H mixture needle clockwise until lightly seated, and then turn both mixture needles anticlockwise following turns.

L mixture needle : 1 5/8, H mixture needle : 1 7/8

NOTE : If needles are forced during seating, damage to carburettor may occur.

6. CS-260TES : Remove cleaner lid and cleaner case to confi rm throttle plate on carburettor visually. CS-270WES : Remove cleaner lid to confi rm throttle plate on carburettor visually.

7. Turn idle adjust screw anticlockwise and set the screw until the tip to just contact throttle plate.

Then turn idle adjust screw 2 1/8 turns clockwise.

Install all removed parts.

10

2-3 Adjusting carburettor

idle adjust screw

(B)

(A)

L

L

H

H

SERVICE INFORMATION

(A)

(B)

CS-260TES

CS-270WES

1. Start engine and warm it up well for 70 seconds as follows.

(1) 5 seconds at idle and 5 seconds at WOT.

(2) 5 seconds at idle and 5 sedonds at WOT.

(3) 5 seconds at idle and 10 seconds at WOT.

Repeat above (1) to (3) again.

2. Using 2.5 mm wide blade screw driver, adjust L mixture needle to obtain maximum idle speed.

3. Set idle speed to 4,400 r/min by turning idle adjust screw.

4. Turn L mixture needle anticlockwise to reduce engine idle speed 1,000 to 1,100 r/min to set idle speed in the range of 3,300 to 3,400 r/min.

NOTE : Engine speed must be allowed to stabilize a minimum of 20 seconds after each adjustment of L mixture needle to assure accurate tachometer readings.

5. Turn H mixture needle anticlockwise until engine speed drops to approx. 11,000 r/min. Turn H mixture needle 1/8 turn increments clockwise at idle engine speed, then squeeze throttle trigger and check WOT engine speed. If the WOT engine speed is less than 11,500 r/min, turn H mixture needle 1/8 turn clockwise again, and check WOT engine speed. The fi nal WOT engine speed should fall within the11,700 to 12,300 r/min range.

NOTE : During H mixture needle adjustment, do not run engine at high speed without load longer than 10 seconds.

6. After adjusting carburettor, put new limiter cap on the other side of limiter cap tool as shown, and press the limiter caps to the bottoms on L and H mixture needles respectively.

NOTE : Align the limiter cap’s tabs (A) with locating slots (B) in extended housing of carburettor.

IMPORTANT : The limiter caps must be installed L and H mixture needles to comply with

Emission Directive.

7. Start engine again and make it sure engine runs at idle speed in the range of 2,800 to 3,600 r/min and at WOT engine speed in the range of

11,500 to 12,500 r/min. Also make it sure chain would not turn at engine idle speed and suitable acceleration.

NOTE : Initial carburettor setting (Idle adjust screw,

L and H mixture needles) shown here is to start the engine after restoration or carburettor change. Idle adjust screw, L and H needles turn for designated engine revolution through procedures indicated here may vary. As long as idle and WOT engine speed is set in given range, variance would be ignorable.

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