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Jonsered 625 User Manual

Jonsered 625
126 pages
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1
Workshop Manual
Chain Saws
Contents
This manual covers models:
2036/2040
2041/2045/2050
2054/2055
625/630/670
2077/2083
2095
General recommendations 2
1. Safety equipment 3
2. Starter unit 17
3. Electrical system 23
4. Fuel system 35
5. Centrifugal clutch 55
6. Lubrication system 65
7. Cylinder and piston 77
8. Crankshaft and crankcase 93
9. Tools 115
10. Technical data 127
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Jonsered 625 Specifications

General IconGeneral
BrandJonsered
Model625
CategoryChainsaw
LanguageEnglish

Summary

General recommendations

Fire hazard

Precautions for handling flammable petrol and avoiding ignition sources.

Toxic fumes

Warnings about the toxicity of exhaust fumes and cleaning liquids.

Special tools

Importance of using recommended special tools for safety and component integrity.

Sealing surfaces and gaskets

Instructions for cleaning sealing surfaces and removing old gasket residue.

Sealing rings

Guidelines for replacing and fitting sealing rings to ensure proper function.

Safety equipment

Dismantling

Procedures for disassembling the chain brake from the chain saw.

Disassembly

Steps for releasing the chain brake and removing its components.

Fitting

Instructions for fitting the chain brake components back onto the saw.

Checking of automatic function

Steps to verify the correct operation of the automatic chain brake function.

Checking of brake action

Procedures to test the responsiveness and effectiveness of the chain brake.

Chain catcher

Information on the chain catcher's role and condition.

Throttle lock

Details about the throttle lock mechanism and its function.

Starter unit

Dismantling

Steps for dismantling the starter unit from the engine.

Replacement of return spring

Instructions for replacing the return spring in the starter unit.

Replacement of starter cord

Procedure for replacing the starter cord.

Assembly

Steps for reassembling the starter unit after maintenance.

Replacement of starter pawls

Guide for replacing the starter pawls.

Electrical system

Checking ignition spark

Procedures to check and troubleshoot the ignition spark.

Replacing spark plug protection

Steps for removing and installing spark plug protection.

Dismantling

General procedures for dismantling electrical system components.

Starter pawls

Information regarding starter pawls within the electrical system context.

Assembly

General procedures for assembling electrical system components.

Electrically heated handles

Details on the electrically heated handles system.

Replacing the generator

Instructions for replacing the generator unit.

Fuel system

Air filter

Procedures for removing, cleaning, and refitting the air filter.

Centrifugal cleaning (Turbo)

Explanation of the centrifugal cleaning process for the air filter.

Fuel filter

Instructions for accessing and replacing the fuel filter.

Carburettor

General information and procedures related to the carburettor.

Carburettor design

Description of the carburettor's internal structure and sections.

Carburettor setting

Guide to adjusting the carburettor for optimal performance.

Fuel tank vent

Information on the function and maintenance of the fuel tank vent.

Trouble shooting schedule

A schedule for diagnosing and resolving fuel system issues.

Centrifugal clutch

Dismantling

Steps for disassembling the centrifugal clutch from the crankshaft.

Fitting

Procedures for assembling the centrifugal clutch onto the crankshaft.

Lubricating system

Dismantling

Steps for dismantling the lubricating system components.

Fitting

Procedures for assembling the lubricating system components.

Oil tank venting

Information on the oil tank ventilation system and its function.

Checking of pump function

How to verify the proper operation of the oil pump.

Trouble shooting system

A guide to diagnosing and resolving common lubrication system problems.

Cylinder and piston

Dismantling

General procedures for dismantling the cylinder and piston assembly.

Fitting

General procedures for fitting the cylinder and piston assembly.

Decompression valve

Details on the decompression valve and its function.

Cleaning, inspection

Steps for cleaning and inspecting cylinder and piston components.

Analysis and procedure

Guidance on analyzing damage and performing corrective actions.

Service tips

Practical advice and tips for servicing cylinder and piston parts.

Wear tolerances

Specifications for acceptable wear and tolerances of parts.

Crankshaft and crankcase

Replacement of sealing ring on magneto side

Procedures for replacing the sealing ring on the magneto side.

Replacement of sealing ring on clutch side

Procedures for replacing the sealing ring on the clutch side.

Replacement of bar attachment bolts

Instructions for replacing bar attachment bolts.

Vibration damper

Information on vibration dampers and their replacement.

Tools

Oil pump

Table listing specific tools for oil pump service by model.

Generator

Table listing specific tools for generator service by model.

Clutch

Table listing specific tools for clutch service by model.

Vibration damper

Table listing specific tools for vibration damper service by model.

Crankshaft

Table listing specific tools for crankshaft service by model.

Ball bearing

Table listing specific tools for ball bearing service by model.

Sealing ring

Table listing specific tools for sealing ring service by model.

Cylinder and piston

Table listing specific tools for cylinder and piston service by model.

Ignition system

Table listing specific tools for ignition system service by model.

Crankcase

Table listing specific tools for crankcase service by model.

Tightness testing

Table listing specific tools for tightness testing by model.

Chain brake

Table listing specific tools for chain brake service by model.

Fuel pick-up

Table listing specific tools for fuel pick-up service by model.

Workshop equipment

Table listing workshop equipment by model.

Technical data

Technical data

A compilation of technical specifications for various chain saw models.

Tightening torque

Specifications for torque values for different components.

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