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SERVICE INFORMATION

SRM-2305
SRM-2305SI

5

0

5

10

1

2

3

4

5

6

7

8

9

10

11

5K193

5K016

5K042

5K194

5K171

5K228

5K229

5K230

5K231

1-5 Service limits

A

B

C

D

E

F

G

H

K

L

M

Description

mm (in)

A

Cylinder bore

When plating is worn and aluminium can be seen

B

Piston outer diameter

Min.

32.14 (1.265)

C

Piston pin bore

Max.

8.030 (0.3161)

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.

7.970 (0.3138)

G

Piston ring width

Min.

1.45 (0.057)

H

Piston ring end gap

Max.

0.5 (0.02)

K

Crankshaft runout

Max.

0.05 (0.002)

L

Clutch drum bore

Max.

51.5 (2.03)

Summary of Contents for Echo SRM-2305

Page 1: ...on the latest products information available at the time of publication 1 CONTENTS page 1 SERVICE INFORMATION 2 1 1 Specification 2 1 2 Technical data 3 1 3 Torque limits 4 1 4 Special repairing mate...

Page 2: ...mm in 3 0 x 1000 0 12 x 39 4 3 0 x 920 0 12 x 36 2 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 J...

Page 3: ...r min kV 20 Secondary coil resistance k 1 0 2 0 Pole shoe air gaps mm in 0 3 0 4 0 012 0 016 Ignition timing at 7000 r min BTDC 28 Carburettor Idle adjust screw initial setting turn in 2 3 4 L mixtur...

Page 4: ...70 110 7 11 60 95 Cylinder M 5 70 100 7 10 60 90 Cylinder cover M 4 14 28 1 4 2 8 12 24 Muffler M 5 60 100 6 10 52 85 Others Blade fastening nut LM 10 280 320 28 32 245 280 Regular bolt nut M 3 6 10 0...

Page 5: ...nder bore When plating is worn and aluminium can be seen B Piston outer diameter Min 32 14 1 265 C Piston pin bore Max 8 030 0 3161 D Piston ring groove Max 1 6 0 063 E Piston ring side clearance Max...

Page 6: ...iston pin tool Removing and installing piston pin Use 8 mm dia adapter 9 897705 11520 Bearing tool Removing and installing con rod small end needle bearing 10 897712 04630 2 pin wrench Removing and in...

Page 7: ...L mixture needle and H mixture needle 1 Remove air cleaner cover and air cleaner 2 Turn L mixture needle clockwise until lean stop to cut easily 3 Using a sharp knife give triangle cut between the st...

Page 8: ...s after each adjustment of L mixture needle to assure accurate tachometer readings 5 Adjust WOT engine speed in the range of 8200 to 10000 r min by turning H mixture needle 6 After adjusting carburett...

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