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Wisconsin W4-1770 User Manual

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Table of Contents

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Wisconsin W4-1770 Specifications

General IconGeneral
Displacement177 cc (10.8 cu in)
Horsepower5.5 hp (4.1 kW) @ 3600 RPM
Fuel SystemCarburetor
Lubrication SystemSplash
Starting SystemRecoil starter
TypeSingle cylinder
Ignition SystemMagneto

Summary

Starting and Operating New Engines

Important Safety Notice

Specifications

Safety Precautions

Detailed precautions to ensure safe engine operation and maintenance.

General Information and Design

Before Starting Engine

Essential steps for preparing the engine before starting, including fuel and lubrication.

Starting

Starting Procedure

Step-by-step guide for initiating engine operation.

Maintenance

Air Cleaners

Procedures for cleaning and servicing air intake filters.

Crankcase Oil

Oil Filter

Adjustments

Carburetor Adjustments

Details on adjusting carburetor settings for proper fuel mixture.

Distributor Breaker Point Adjustment

Governor Operation

Governor Adjustment

Distributor Timing Procedure

Timing Check

Electrical Equipment

Flywheel Alternator

Description and service information for the flywheel alternator system.

Flywheel Alternator Service Procedure

Trouble Shooting

Static Tests

Procedures for testing alternator components without the engine running.

Belt Driven Alternator

Engine Troubles: Causes and Remedies

Starting Difficulties

Common causes and remedies for engines that are hard to start.

Engine Overheats

Engine Disassembly and Reassembly

Tool Requirements

List of special tools needed for engine repair.

Flywheel

Cylinder Head

Valves and Seat Inserts

Connecting Rods and Pistons

Piston Rings

Cylinder Blocks

Main Bearing Plate and Crankshaft

Camshaft and Valve Tappets

Testing Rebuilt Engine

Fuel Pump Repair Instructions

Carburetor Zenith Model 87 A8

Fuel Supply System

Explanation of how fuel is supplied to the carburetor.

Idle System

How the carburetor operates at idle speeds.

High Speed System

How the carburetor operates at high speeds.

Choke System

How the choke system affects the fuel mixture for starting.

Float Setting

How to adjust the float level for correct fuel delivery.

Carburetor Adjustments

Procedures for making idle speed and mixture adjustments.

Carburetor Troubles: Causes and Remedies

Fuel Leaks from Carburetor

Causes and solutions for fuel leaks originating from the carburetor.

Type FM-X4B7A Magneto

Servicing Breaker Points

How to inspect, replace, and adjust magneto breaker points.

Engine Maintenance Schedule

Torque Specifications for Machine Hardware

Recommended torque values for various fasteners and components.

Solid State Ignition Distributors

Volt Meter Testing

Using a voltmeter to diagnose ignition system issues.

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