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Shindaiwa 680 - User Manual

Shindaiwa 680
139 pages
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sERVICE
MANUAL
Shindaiwa
Chain Saws
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i
ndaiwa
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Summary

Attention Statements

WARNING!

Statements to prevent serious bodily injury.

ATTENTION!

Statements to avoid damaging the saw.

IMPORTANT!

Statements of special significance.

Model Designation and Identification

Troubleshooting

Theory of Operation

Explains the two-stroke cycle engine's operation and power stroke.

Reed Valve Induction

Explains intake, compression, and ignition for Reed Valve Induction.

General Troubleshooting Procedures

Provides a checklist for common troubleshooting steps and checks.

Engine Does Not Start

Troubleshooting guide for an engine that will not start.

Low Power Output

Troubleshooting for low power output, overheating, and knocking.

Additional Problems

Addresses issues like poor acceleration, uneven idle, and excessive vibration.

Diagnosing Engine Seizure

Guide to diagnosing the causes of engine seizure.

Factors Affecting Engine Durability

Discusses lubrication and cooling as critical factors for engine life.

Overheating

Details causes of overheating and resulting engine damage.

Preignition

Details causes and damage from preignition.

Incorrect or lean fuel-air ratio

Discusses issues related to lean fuel-air mixtures.

Air Leaks

Explains the impact of air leaks on engine performance.

Oxygenated fuels

Information on fuels containing oxygenates.

Outdated or low-octane fuel

Discusses problems with old or low-octane fuel.

Common Causes of Engine Seizure

Diagram and list of common causes leading to engine seizure.

Seizure Checklist

Checklist for diagnosing the cause of engine seizure.

Carburetors

Theory of Operation

Explains carburetor function, fuel flow, and venturi principle.

Fuel Flow: Butterfly Carburetors

Details fuel flow through butterfly carburetors.

Fuel Supply

Explains the fuel pump diaphragm and its operation.

Metering Chamber

Describes the metering chamber and its valve operation.

Basic Carburetor Settings

Lists basic carburetor settings for various Shindaiwa models.

Walbro HDA and WT Carburetor Adjustments

Details adjustments for Walbro HDA and WT carburetors.

Idle Speed Adjustment

Procedure for adjusting engine idle speed.

Low Speed Mixture

Procedure for adjusting low speed mixture.

High Speed Mixture

Procedure for adjusting high speed mixture.

Adjusting the WYM Carburetor

Details idle speed and mixture adjustments for WYM carburetors.

General Service Notes

Provides general notes and recommendations for carburetor servicing.

Carburetor Removal

Step-by-step instructions for removing the carburetor.

HDA and WT Disassembly

Disassembly steps for HDA and WT carburetor types.

Metering System

Details the carburetor's metering system.

Fuel Pump and Inlet Screen

Instructions for handling the fuel pump and inlet screen.

Throttle and Choke Shafts

Notes on throttle and choke shafts.

Mixture Adjustment Screws

Instructions for handling mixture adjustment screws.

Welch and Cup Plug Removal

Steps for removing Welch and cup plugs.

Idle Progression Holes

Cleaning idle progression holes.

Main Nozzle Check Valve

Information on the main nozzle check valve.

Inspection

Inspection of carburetor components for damage or wear.

Throttle Body

Inspection of the throttle body.

Mixture Adjustment Screws

Inspection of mixture adjustment screws.

Pump Body

Inspection of the pump body.

Diaphragms

Inspection of diaphragms.

Metering Valve

Inspection and installation of the metering valve.

Main Nozzle Check Valve

Information on the main nozzle check valve.

Reassembly

Steps for reassembling carburetor components.

Cup Plug and Screen

Reassembly of cup plug and screen.

Welch Plug

Reassembly of Welch plug.

Metering Assembly

Reassembly of the metering assembly.

Fuel Pump

Reassembly of the fuel pump.

Mixture Screws

Reinstallation of mixture screws.

Air Cleaner Cover

Reinstallation of air cleaner cover.

Carburetor on the saw

Installing the carburetor onto the saw.

Recoil Starters

Operation

Explains how the recoil starter mechanism works.

Variations by Model

Highlights differences in recoil starters across various Shindaiwa models.

Disassembly

Steps for disassembling the recoil starter assembly.

Remove the Starter Reel

Steps to remove the starter reel.

Remove the Recoil Spring

Steps to remove the recoil spring.

Remove the Rope Guide

Steps to remove the rope guide.

Removing the Starter Pawls

Steps to remove the starter pawls.

General Cleaning and Inspection

Cleaning and inspecting recoil starter components.

Lubrication

Lubricating the recoil spring and housing center post.

Reassembly

Steps for reassembling the recoil starter.

Retainer Type

Information on retainer types.

Install the Cord

Steps for installing the starter cord.

Install the Reel

Steps for installing the starter reel.

Install the Recoil

Steps for installing the recoil starter.

Testing

Tests recoil starter operation and spring tension.

Replace the Starter Pawls

Procedure for replacing starter pawls.

Ignition Systems

Construction

Describes ignition system construction for Shindaiwa saws.

Theory of Operation: TCI

Explains TCI ignition system operation.

Ignition Part Numbers by Application

Lists ignition part numbers for different saw models.

Theory of Operation: CDI

Explains CDI ignition system operation for larger saws.

Basic Troubleshooting

General troubleshooting steps for ignition systems.

The Spark Plug

Inspection and troubleshooting of the spark plug.

Ignition System Tests

Procedures for testing ignition system components.

Test with an adjustable-gap spark tester

Tests ignition system voltage output using a spark tester.

Test the ignition stop switch

Tests the function of the ignition stop switch.

Inspect wiring and connections

Inspects ignition system wiring and connections.

Check the Exciter Coil Air Gap

Checks and adjusts the exciter coil air gap.

Test the Spark Coil

Tests the spark coil secondary windings.

Test the Primary Windings

Tests the primary windings of the ignition coil.

Test the Pulser

Tests the pulser coil for continuity and output.

Advanced Troubleshooting Techniques

Utilizes ignition analyzers for advanced troubleshooting.

Use of Ignition Analyzers

Guides on using ignition analyzers for diagnosis.

Test Maximum Firing Voltage

Measures maximum available ignition voltage output.

Test Voltage Required for Spark Plug

Tests the voltage needed to fire the spark plug.

Test the Spark Coil Output

Tests spark coil output using an analyzer.

Test Coil for Leakage

Tests the spark coil and secondary lead insulation for leakage.

Test the Exciter Coil Output

Measures the output voltage of the exciter coil.

Test for Pulser Coil Output

Tests the pulser coil output for 3-piece systems.

Use of Flywheel Simulators

Using flywheel simulators to test ignition components.

Ignition Systems Troubleshooting

Troubleshooting for 300, 300 S, 357, 360, 377

Troubleshooting steps for one-piece TCI ignition systems.

Troubleshooting for 488, 577, 757

Troubleshooting steps for two-piece CDI ignition systems.

Troubleshooting for 550, 575, 680, 695

Troubleshooting steps for three-piece CDI ignition systems.

Clutches

General

General description of Shindaiwa clutch design.

Clutch Identification

Identifies clutch system components by model.

Clutch Removal

Steps for removing the clutch assembly (excluding Model 757).

Clutch Hub; Drum Removal (Model 757)

Steps for removing the clutch hub and drum for Model 757.

Disassembly

Steps for disassembling clutch shoes and components.

Inspection

Inspection of clutch components for wear or damage.

Reassembly (Except Model 757)

Steps for reassembling the clutch (excluding Model 757).

Reassembly (Model 757)

Steps for reassembling the clutch assembly for Model 757.

Final Assembly and Testing

Final assembly and testing of the clutch system.

Cylinders and Pistons

Construction

Describes construction of Shindaiwa cylinders and pistons.

Cylinder Removal

Steps for removing the cylinder.

Piston Removal

Steps for removing the piston.

Cleaning

Instructions for cleaning engine components.

Decarbonizing

Procedure for removing carbon deposits.

Base Gasket

Instructions for removing the cylinder base gasket.

Inspection

Inspection of the cylinder bore.

Cylinder Bore

Details cylinder bore characteristics and cleaning.

Piston

Inspection of the piston for damage or wear.

Rings

Inspection and replacement guidelines for piston rings.

Piston Pin and Bearing

Inspection of piston pin and bearing.

Reassembly

Steps for reassembling piston, pin, bearing, and rings.

Snap Ring Installation

Instructions for installing snap rings.

Piston Ring Installation

Procedure for installing piston rings correctly.

Cylinder Installation

Steps for installing the cylinder onto the crankcase.

Torquing

Torque specifications for cylinder base mounting screws.

Final Assembly

Final assembly procedures and component installation.

Break In

Recommendations for breaking in a rebuilt engine.

Engine Crankcase

Construction

Describes engine crankcase construction and features.

Crankcase Disassembly

Steps for disassembling the crankcase (except Model 357).

Remove Accessories

Steps to remove accessories before crankcase disassembly.

Remove the Rear Handle

Procedure for removing the rear handle assembly.

Disassembly

General steps for disassembling the engine crankcase.

Separate the Crankcase Halves

Methods for separating the crankcase halves.

Bearing and Seal Removal

Steps for removing bearings and seals from the crankcase.

Cleaning

Cleaning procedures for crankcase components.

Inspection

Inspection of crankshaft bearings for damage or debris.

Crankshaft

Inspection of crankshaft for damage, bending, and runout.

Twist

Checking crankshaft for twist and runout.

Crankcase Inspection

Inspection of crankcase halves for damage and wear.

Reassembly

Steps for reassembling the crankcase.

Bearing Installation

Procedure for installing crankshaft bearings.

Seal Installation

Steps for installing crankcase seals.

Crankcase;Crankshaft Reassembly

Reassembly of crankcase, crankshaft, and bolts.

Final Assembly

Final assembly and leak testing of the crankcase.

Mufflers

Construction

Describes muffler construction and features.

Service

General service notes for mufflers.

Spark Arrestor Removal and Cleaning

Procedure for removing and cleaning the spark arrestor screen.

Muffler Removal

Steps for removing mufflers from various models.

Inspection

Inspection of muffler body and cylinder flange.

Muffler Installation

Steps for installing the muffler and related components.

Notes on Use of Thread Sealants

Guidelines for using thread sealants on muffler fasteners.

Chain Brakes

General

General description of Shindaiwa chain brake design.

Adjustment

Procedure for adjusting chain brakes (except specific models).

Chain Brake Operation (Non-Inertial Models)

Illustrates chain brake operation for non-inertial models.

Chain Brake Operation (Inertial Models)

Illustrates chain brake operation for inertial models.

Disassembly

Steps for disassembling the chain brake assembly.

Inspection

Inspection of chain brake components for wear or damage.

757 Chain Brake

Details removal, inspection, and reassembly of the Model 757 chain brake.

Reassembly

Steps for reassembling the 757 chain brake assembly.

Testing

Manual and inertial testing procedures for chain brakes.

357 and 377 Chain Brake

Details chain brake mechanisms, removal, and disassembly for 357/377.

Disassembly

Steps for disassembling the 357/377 chain brake.

Inspection

Inspection of 357/377 chain brake components.

Reassembly

Steps for reassembling the 357/377 chain brake assembly.

Inertial Testing

Procedure for testing the inertial chain brake operation.

Oil Pumps

Operation

Explains the operation of Shindaiwa oil pumps.

Oil Pump Troubleshooting

Troubleshooting guide for oil pump symptoms and causes.

General Disassembly

Steps for general disassembly of the oil pump system.

Inspection

Inspection of oil pump components for wear or damage.

Pump Repairs

Guides for repairing oil pump components.

Pump Disassembly

Steps for disassembling the oil pump.

Pump Inspection

Inspection of pump shaft and bore.

Pump Assembly

Instructions for assembling the oil pump using a repair kit.

General Reassembly

General steps for reassembling the oil pump system.

Pump Installation and Alignment

Pump installation and alignment on the crankshaft.

Cover Installation and Alignment

Cover installation and alignment for proper operation.

Rear Handles and A-V Cushions

General

General description of Shindaiwa rear handles and anti-vibration cushions.

Disassembly

Steps for disassembling the rear handle assembly.

Inspection

Inspection of A-V cushions and rear handle for damage.

Reassembly

Steps for reassembling the rear handle and A-V cushions.

Model 357 Top Handle Saw

General

General overview of the Model 357 Top Handle Saw.

Teardown

Guide to the general layout and construction of the Model 357.

Major Components Overview

Diagram of major components of the Model 357 Top Handle Saw.

Remove the Clutch Cover

Steps for removing the clutch cover and brake assembly.

Remove the Muffler

Steps for removing the muffler.

Remove the Clutch Assembly

Steps for removing the clutch assembly.

Remove the Oil Pump and Engine Mounting Screw

Steps for removing oil pump and engine mounting components.

Remove the Starter Assembly

Steps for removing the starter assembly.

Remove the Flywheel and Ignition

Steps for removing the flywheel and ignition components.

Remove the Air Cleaner, Carburetor, and Reed Valve Assembly

Steps for removing air cleaner, carburetor, and reed valve.

Remove the Handles

Steps for removing the front and top handles.

Remove the Powerhead

Steps for removing the powerhead from the saw.

Remove the Crankshaft

Steps for removing the crankshaft assembly.

Inspection

Inspection of the reed valve and mounting block.

Reed Valve Theory

Explains the operation of the reed valve.

Reed Valve Inspection

Visual inspection of the reed valve for damage.

Reassembly

Reassembly procedures for Model 357.

Crankcase Assembly

Coating and torquing crankcase mating surfaces and screws.

Powerhead Installation

Installing the powerhead mounting screws.

Ignition Coil

Ensuring correct plastic insulators and air gap for ignition coil.

Reed Valve and Carburetor

Installing reed valve and carburetor gaskets dry.

Throttle Lever and Handle

Assembling handle halves, throttle components, and E-ring.

Oil Pump

Installing oil pump grommet, hose, and drive gear.

Standard Carburetor Settings

Standard settings for low and high-speed mixture.

Startup and Adjustments

Procedures for starting and adjusting the engine.

Adjust the Low Speed Mixture

Adjusting the idle mixture screw for optimal engine idling.

Adjust the High Speed Mixture

Adjusting the high speed mixture screw for performance.

Appendix

Specifications

Technical specifications for various Shindaiwa saw models.

Engine Specifications

Details engine displacement, bore, stroke, power, and weight.

Ignition System Specifications

Specifications for ignition type, voltage, and gaps.

Muffler Specifications

Muffler attachment points.

Anti-Vibration and Safety Specifications

Details anti-vibration cushion counts and safety equipment.

Chain Oiler Specifications

Specifications for oil tank capacity and pump flow rate.

Cutting Attachments Specifications

Specifications for bar mount, chain, and sprockets.

Torque Values

Torque specifications for various engine and component fasteners.

Tolerances and Wear Limits

Dimensional tolerances and wear limits for engine components.

Fuel and Oil

Information on gasoline, oxygenated fuels, and oil usage.

Gasoline Information

Details on gasoline properties, octane rating, volatility, and storage.

Alcohol and Water in Fuel

Discusses effects of alcohol and water in gasoline.

Fuel Storage Recommendations

Recommendations for storing gasoline and fuel system care.

Fuel Usage Recommendations

Recommendations for using oxygenated fuels and oil ratios.

Special Service Tools

List of special tools required for Shindaiwa saw maintenance.

Clutch Tools

Special tools for clutch repair.

Carburetor Tools (Walbro)

Special tools for Walbro carburetor service.

Crankcase Pressure Test Kit

Kit for testing crankcase pressure.

Chain Brake Service Tools

Special tools for chain brake service.

Tune Up Tools

Tools for engine tune-up.

Miscellaneous Tools

Other specialized tools.

Summary

Attention Statements

WARNING!

Statements to prevent serious bodily injury.

ATTENTION!

Statements to avoid damaging the saw.

IMPORTANT!

Statements of special significance.

Model Designation and Identification

Troubleshooting

Theory of Operation

Explains the two-stroke cycle engine's operation and power stroke.

Reed Valve Induction

Explains intake, compression, and ignition for Reed Valve Induction.

General Troubleshooting Procedures

Provides a checklist for common troubleshooting steps and checks.

Engine Does Not Start

Troubleshooting guide for an engine that will not start.

Low Power Output

Troubleshooting for low power output, overheating, and knocking.

Additional Problems

Addresses issues like poor acceleration, uneven idle, and excessive vibration.

Diagnosing Engine Seizure

Guide to diagnosing the causes of engine seizure.

Factors Affecting Engine Durability

Discusses lubrication and cooling as critical factors for engine life.

Overheating

Details causes of overheating and resulting engine damage.

Preignition

Details causes and damage from preignition.

Incorrect or lean fuel-air ratio

Discusses issues related to lean fuel-air mixtures.

Air Leaks

Explains the impact of air leaks on engine performance.

Oxygenated fuels

Information on fuels containing oxygenates.

Outdated or low-octane fuel

Discusses problems with old or low-octane fuel.

Common Causes of Engine Seizure

Diagram and list of common causes leading to engine seizure.

Seizure Checklist

Checklist for diagnosing the cause of engine seizure.

Carburetors

Theory of Operation

Explains carburetor function, fuel flow, and venturi principle.

Fuel Flow: Butterfly Carburetors

Details fuel flow through butterfly carburetors.

Fuel Supply

Explains the fuel pump diaphragm and its operation.

Metering Chamber

Describes the metering chamber and its valve operation.

Basic Carburetor Settings

Lists basic carburetor settings for various Shindaiwa models.

Walbro HDA and WT Carburetor Adjustments

Details adjustments for Walbro HDA and WT carburetors.

Idle Speed Adjustment

Procedure for adjusting engine idle speed.

Low Speed Mixture

Procedure for adjusting low speed mixture.

High Speed Mixture

Procedure for adjusting high speed mixture.

Adjusting the WYM Carburetor

Details idle speed and mixture adjustments for WYM carburetors.

General Service Notes

Provides general notes and recommendations for carburetor servicing.

Carburetor Removal

Step-by-step instructions for removing the carburetor.

HDA and WT Disassembly

Disassembly steps for HDA and WT carburetor types.

Metering System

Details the carburetor's metering system.

Fuel Pump and Inlet Screen

Instructions for handling the fuel pump and inlet screen.

Throttle and Choke Shafts

Notes on throttle and choke shafts.

Mixture Adjustment Screws

Instructions for handling mixture adjustment screws.

Welch and Cup Plug Removal

Steps for removing Welch and cup plugs.

Idle Progression Holes

Cleaning idle progression holes.

Main Nozzle Check Valve

Information on the main nozzle check valve.

Inspection

Inspection of carburetor components for damage or wear.

Throttle Body

Inspection of the throttle body.

Mixture Adjustment Screws

Inspection of mixture adjustment screws.

Pump Body

Inspection of the pump body.

Diaphragms

Inspection of diaphragms.

Metering Valve

Inspection and installation of the metering valve.

Main Nozzle Check Valve

Information on the main nozzle check valve.

Reassembly

Steps for reassembling carburetor components.

Cup Plug and Screen

Reassembly of cup plug and screen.

Welch Plug

Reassembly of Welch plug.

Metering Assembly

Reassembly of the metering assembly.

Fuel Pump

Reassembly of the fuel pump.

Mixture Screws

Reinstallation of mixture screws.

Air Cleaner Cover

Reinstallation of air cleaner cover.

Carburetor on the saw

Installing the carburetor onto the saw.

Recoil Starters

Operation

Explains how the recoil starter mechanism works.

Variations by Model

Highlights differences in recoil starters across various Shindaiwa models.

Disassembly

Steps for disassembling the recoil starter assembly.

Remove the Starter Reel

Steps to remove the starter reel.

Remove the Recoil Spring

Steps to remove the recoil spring.

Remove the Rope Guide

Steps to remove the rope guide.

Removing the Starter Pawls

Steps to remove the starter pawls.

General Cleaning and Inspection

Cleaning and inspecting recoil starter components.

Lubrication

Lubricating the recoil spring and housing center post.

Reassembly

Steps for reassembling the recoil starter.

Retainer Type

Information on retainer types.

Install the Cord

Steps for installing the starter cord.

Install the Reel

Steps for installing the starter reel.

Install the Recoil

Steps for installing the recoil starter.

Testing

Tests recoil starter operation and spring tension.

Replace the Starter Pawls

Procedure for replacing starter pawls.

Ignition Systems

Construction

Describes ignition system construction for Shindaiwa saws.

Theory of Operation: TCI

Explains TCI ignition system operation.

Ignition Part Numbers by Application

Lists ignition part numbers for different saw models.

Theory of Operation: CDI

Explains CDI ignition system operation for larger saws.

Basic Troubleshooting

General troubleshooting steps for ignition systems.

The Spark Plug

Inspection and troubleshooting of the spark plug.

Ignition System Tests

Procedures for testing ignition system components.

Test with an adjustable-gap spark tester

Tests ignition system voltage output using a spark tester.

Test the ignition stop switch

Tests the function of the ignition stop switch.

Inspect wiring and connections

Inspects ignition system wiring and connections.

Check the Exciter Coil Air Gap

Checks and adjusts the exciter coil air gap.

Test the Spark Coil

Tests the spark coil secondary windings.

Test the Primary Windings

Tests the primary windings of the ignition coil.

Test the Pulser

Tests the pulser coil for continuity and output.

Advanced Troubleshooting Techniques

Utilizes ignition analyzers for advanced troubleshooting.

Use of Ignition Analyzers

Guides on using ignition analyzers for diagnosis.

Test Maximum Firing Voltage

Measures maximum available ignition voltage output.

Test Voltage Required for Spark Plug

Tests the voltage needed to fire the spark plug.

Test the Spark Coil Output

Tests spark coil output using an analyzer.

Test Coil for Leakage

Tests the spark coil and secondary lead insulation for leakage.

Test the Exciter Coil Output

Measures the output voltage of the exciter coil.

Test for Pulser Coil Output

Tests the pulser coil output for 3-piece systems.

Use of Flywheel Simulators

Using flywheel simulators to test ignition components.

Ignition Systems Troubleshooting

Troubleshooting for 300, 300 S, 357, 360, 377

Troubleshooting steps for one-piece TCI ignition systems.

Troubleshooting for 488, 577, 757

Troubleshooting steps for two-piece CDI ignition systems.

Troubleshooting for 550, 575, 680, 695

Troubleshooting steps for three-piece CDI ignition systems.

Clutches

General

General description of Shindaiwa clutch design.

Clutch Identification

Identifies clutch system components by model.

Clutch Removal

Steps for removing the clutch assembly (excluding Model 757).

Clutch Hub; Drum Removal (Model 757)

Steps for removing the clutch hub and drum for Model 757.

Disassembly

Steps for disassembling clutch shoes and components.

Inspection

Inspection of clutch components for wear or damage.

Reassembly (Except Model 757)

Steps for reassembling the clutch (excluding Model 757).

Reassembly (Model 757)

Steps for reassembling the clutch assembly for Model 757.

Final Assembly and Testing

Final assembly and testing of the clutch system.

Cylinders and Pistons

Construction

Describes construction of Shindaiwa cylinders and pistons.

Cylinder Removal

Steps for removing the cylinder.

Piston Removal

Steps for removing the piston.

Cleaning

Instructions for cleaning engine components.

Decarbonizing

Procedure for removing carbon deposits.

Base Gasket

Instructions for removing the cylinder base gasket.

Inspection

Inspection of the cylinder bore.

Cylinder Bore

Details cylinder bore characteristics and cleaning.

Piston

Inspection of the piston for damage or wear.

Rings

Inspection and replacement guidelines for piston rings.

Piston Pin and Bearing

Inspection of piston pin and bearing.

Reassembly

Steps for reassembling piston, pin, bearing, and rings.

Snap Ring Installation

Instructions for installing snap rings.

Piston Ring Installation

Procedure for installing piston rings correctly.

Cylinder Installation

Steps for installing the cylinder onto the crankcase.

Torquing

Torque specifications for cylinder base mounting screws.

Final Assembly

Final assembly procedures and component installation.

Break In

Recommendations for breaking in a rebuilt engine.

Engine Crankcase

Construction

Describes engine crankcase construction and features.

Crankcase Disassembly

Steps for disassembling the crankcase (except Model 357).

Remove Accessories

Steps to remove accessories before crankcase disassembly.

Remove the Rear Handle

Procedure for removing the rear handle assembly.

Disassembly

General steps for disassembling the engine crankcase.

Separate the Crankcase Halves

Methods for separating the crankcase halves.

Bearing and Seal Removal

Steps for removing bearings and seals from the crankcase.

Cleaning

Cleaning procedures for crankcase components.

Inspection

Inspection of crankshaft bearings for damage or debris.

Crankshaft

Inspection of crankshaft for damage, bending, and runout.

Twist

Checking crankshaft for twist and runout.

Crankcase Inspection

Inspection of crankcase halves for damage and wear.

Reassembly

Steps for reassembling the crankcase.

Bearing Installation

Procedure for installing crankshaft bearings.

Seal Installation

Steps for installing crankcase seals.

Crankcase;Crankshaft Reassembly

Reassembly of crankcase, crankshaft, and bolts.

Final Assembly

Final assembly and leak testing of the crankcase.

Mufflers

Construction

Describes muffler construction and features.

Service

General service notes for mufflers.

Spark Arrestor Removal and Cleaning

Procedure for removing and cleaning the spark arrestor screen.

Muffler Removal

Steps for removing mufflers from various models.

Inspection

Inspection of muffler body and cylinder flange.

Muffler Installation

Steps for installing the muffler and related components.

Notes on Use of Thread Sealants

Guidelines for using thread sealants on muffler fasteners.

Chain Brakes

General

General description of Shindaiwa chain brake design.

Adjustment

Procedure for adjusting chain brakes (except specific models).

Chain Brake Operation (Non-Inertial Models)

Illustrates chain brake operation for non-inertial models.

Chain Brake Operation (Inertial Models)

Illustrates chain brake operation for inertial models.

Disassembly

Steps for disassembling the chain brake assembly.

Inspection

Inspection of chain brake components for wear or damage.

757 Chain Brake

Details removal, inspection, and reassembly of the Model 757 chain brake.

Reassembly

Steps for reassembling the 757 chain brake assembly.

Testing

Manual and inertial testing procedures for chain brakes.

357 and 377 Chain Brake

Details chain brake mechanisms, removal, and disassembly for 357/377.

Disassembly

Steps for disassembling the 357/377 chain brake.

Inspection

Inspection of 357/377 chain brake components.

Reassembly

Steps for reassembling the 357/377 chain brake assembly.

Inertial Testing

Procedure for testing the inertial chain brake operation.

Oil Pumps

Operation

Explains the operation of Shindaiwa oil pumps.

Oil Pump Troubleshooting

Troubleshooting guide for oil pump symptoms and causes.

General Disassembly

Steps for general disassembly of the oil pump system.

Inspection

Inspection of oil pump components for wear or damage.

Pump Repairs

Guides for repairing oil pump components.

Pump Disassembly

Steps for disassembling the oil pump.

Pump Inspection

Inspection of pump shaft and bore.

Pump Assembly

Instructions for assembling the oil pump using a repair kit.

General Reassembly

General steps for reassembling the oil pump system.

Pump Installation and Alignment

Pump installation and alignment on the crankshaft.

Cover Installation and Alignment

Cover installation and alignment for proper operation.

Rear Handles and A-V Cushions

General

General description of Shindaiwa rear handles and anti-vibration cushions.

Disassembly

Steps for disassembling the rear handle assembly.

Inspection

Inspection of A-V cushions and rear handle for damage.

Reassembly

Steps for reassembling the rear handle and A-V cushions.

Model 357 Top Handle Saw

General

General overview of the Model 357 Top Handle Saw.

Teardown

Guide to the general layout and construction of the Model 357.

Major Components Overview

Diagram of major components of the Model 357 Top Handle Saw.

Remove the Clutch Cover

Steps for removing the clutch cover and brake assembly.

Remove the Muffler

Steps for removing the muffler.

Remove the Clutch Assembly

Steps for removing the clutch assembly.

Remove the Oil Pump and Engine Mounting Screw

Steps for removing oil pump and engine mounting components.

Remove the Starter Assembly

Steps for removing the starter assembly.

Remove the Flywheel and Ignition

Steps for removing the flywheel and ignition components.

Remove the Air Cleaner, Carburetor, and Reed Valve Assembly

Steps for removing air cleaner, carburetor, and reed valve.

Remove the Handles

Steps for removing the front and top handles.

Remove the Powerhead

Steps for removing the powerhead from the saw.

Remove the Crankshaft

Steps for removing the crankshaft assembly.

Inspection

Inspection of the reed valve and mounting block.

Reed Valve Theory

Explains the operation of the reed valve.

Reed Valve Inspection

Visual inspection of the reed valve for damage.

Reassembly

Reassembly procedures for Model 357.

Crankcase Assembly

Coating and torquing crankcase mating surfaces and screws.

Powerhead Installation

Installing the powerhead mounting screws.

Ignition Coil

Ensuring correct plastic insulators and air gap for ignition coil.

Reed Valve and Carburetor

Installing reed valve and carburetor gaskets dry.

Throttle Lever and Handle

Assembling handle halves, throttle components, and E-ring.

Oil Pump

Installing oil pump grommet, hose, and drive gear.

Standard Carburetor Settings

Standard settings for low and high-speed mixture.

Startup and Adjustments

Procedures for starting and adjusting the engine.

Adjust the Low Speed Mixture

Adjusting the idle mixture screw for optimal engine idling.

Adjust the High Speed Mixture

Adjusting the high speed mixture screw for performance.

Appendix

Specifications

Technical specifications for various Shindaiwa saw models.

Engine Specifications

Details engine displacement, bore, stroke, power, and weight.

Ignition System Specifications

Specifications for ignition type, voltage, and gaps.

Muffler Specifications

Muffler attachment points.

Anti-Vibration and Safety Specifications

Details anti-vibration cushion counts and safety equipment.

Chain Oiler Specifications

Specifications for oil tank capacity and pump flow rate.

Cutting Attachments Specifications

Specifications for bar mount, chain, and sprockets.

Torque Values

Torque specifications for various engine and component fasteners.

Tolerances and Wear Limits

Dimensional tolerances and wear limits for engine components.

Fuel and Oil

Information on gasoline, oxygenated fuels, and oil usage.

Gasoline Information

Details on gasoline properties, octane rating, volatility, and storage.

Alcohol and Water in Fuel

Discusses effects of alcohol and water in gasoline.

Fuel Storage Recommendations

Recommendations for storing gasoline and fuel system care.

Fuel Usage Recommendations

Recommendations for using oxygenated fuels and oil ratios.

Special Service Tools

List of special tools required for Shindaiwa saw maintenance.

Clutch Tools

Special tools for clutch repair.

Carburetor Tools (Walbro)

Special tools for Walbro carburetor service.

Crankcase Pressure Test Kit

Kit for testing crankcase pressure.

Chain Brake Service Tools

Special tools for chain brake service.

Tune Up Tools

Tools for engine tune-up.

Miscellaneous Tools

Other specialized tools.

Shindaiwa 680 Specifications

General IconGeneral
BrandShindaiwa
Model680
CategoryChainsaw
LanguageEnglish

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