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SERVICE INFORMATION

PB-655
PB-755

6

Key

Part Number

Description

Used for:

1

897801-33330 Tachometer PET-1000

Measuring engine speed to adjust carburettor

2

       91004

Module air gap gauge

Adjusting pole shoe air gaps

3

895610-79920 L-hex wrench (4 mm)

Socket bolt (M5)

4

895611-79920

L-hex wrench (5 mm)

Socket bolt (M6)

5

897501-03938 Puller

Removing magnetor rotor

6

897537-30130 Piston stopper

Locking crankshaft rotation

7

897563-19830 Metering lever gauge

Measuring metering lever height on carburettor

8

897558-02830 T-socket wrench(8mm) Removing and installing hex.bolt (M5)

9

897558-10230 T-socket wrench(10mm) Removing and installing hex.bolt (M6)

10

897701-14732 Bearing tool

Removing and installing crankcase ball bearings

11

897702-30131 Piston pin tool

Removing and installing piston pin

 (Use 10 mm dia. adapter.)

12

897712-07930 2-pin wrench

Removing and installing pawl carrier

13

897719-02830 Piston holder

Making piston steady to remove and install piston/rings

14

897726-21430 Oil seal tool

Installing crankcase oil seal

15

897800-79931 Spark tester

Checking ignition system

16

897803-30131 Pressure tester

Testing carburettor and crankcase leakage

17

897826-16131 Rubber plug

Testing crankcase and cylinder leakage

18

897827-16131 Pressure plate

Testing crankcase and cylinder leakage

19

897834-79930 Rubber plug

Testing crankcase and cylinder leakage

20

897835-16131 Pressure connector

Testing crankcase and cylinder leakage

21

       91007

Compression gauge

Measuring cylinder compression

    22

       91020

Limiter plug tool

Removing and installing plug

a

1.5

1.65

1.3

0.4

a

2

0

2

0

4

0

4

0

6

0

6

0

8

0

8

0

1

2

0

1

2

0

1

4

0

1

4

0

1

6

0

1

6

0

1

8

0

1

8

0

2

0

2

0

1

0

0

1

0

0

ECHO

Ignition 

Air Gap Gauge

#.014 = .35mm

P/N 91004

1

5

3: a

 

=

 

4

 

mm

4: a

 

=

 

5

 

mm

6

2

7

8: 

8

 mm

9: 

10

 

mm

10

11

12

14

13

16

17

19

18

20

1-6 Special tools

21

22

15

Summary of Contents for PB-655

Page 1: ...f publication ECHO SERVICE MANUAL Ord No 403 12 contains lots of information for servicing these models 2 CONTENTS page 1 SERVICE INFORMATION 2 1 1 Specification 2 1 2 Technical data 3 1 3 Torque limi...

Page 2: ...gnition Type CDI Capacitor discharge ignition system Spark plug BPM8Y Exhaust Muffler type Spark arrestor muffler Starter Type Automatic rewind Rope diameter x length mm in 3 5 x 1000 9 64 x 39 1 2 Fu...

Page 3: ...e shoe air gaps mm in 0 3 0 4 0 012 0 016 Ignition timing BTDC 30 Carburettor Venturi size mm in 15 0 0 591 Throttle bore mm in 15 0 0 591 Idle adjust screw initial setting turn back 8 Idle mixture ne...

Page 4: ...15 17 130 150 system Carburettor M 5 40 55 4 5 5 35 48 Intake insulator M 5 35 45 3 5 4 5 30 40 Fuel tank M 5 20 40 2 4 17 35 Engine Crankcase M 5 70 110 7 11 60 95 Cylinder M 5 70 110 7 11 60 95 Engi...

Page 5: ...D Piston ring groove 1st Max 1 65 0 065 2nd Max 1 6 0 063 E Piston ring side clearance Max 0 1 0 004 F Piston pin outer diameter Min 9 98 0 393 G Piston ring width Min 1 45 0 057 H Piston ring end ga...

Page 6: ...0 2 pin wrench Removing and installing pawl carrier 13 897719 02830 Piston holder Making piston steady to remove and install piston rings 14 897726 21430 Oil seal tool Installing crankcase oil seal 15...

Page 7: ...carburettor change Idle adjust screw idle and H mixture needles turn for designated engine revolution through procedures indicated here may vary As long as idle and WOT engine speed is set in given r...

Page 8: ...um WOT engine speed just before lean drop off using 2 5mm blade screwdriver 6 Turn hi speed H mixture needle anticlockwise to reduce WOT engine speed 10 20 r min Minimum WOT engine speed after adjusti...

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