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Jacobsen Manuals
Engine
321
Service manual
Jacobsen 321 Service Manual
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Table Of Contents
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Introduction
Understanding Horsepower and Torque
Horsepower, Speed and Torque in Engines
Principles of Operation
Jacobsen Engine Cross Section
Ideal Fuel Mixture Requirements
Carbon Build-Up
Troubleshooting
How to Start a 2-Cycle Engine
Ignition System
Compression
Fuel System
Crankcase Seals and Gaskets
Exhaust Ports and Muffler
Air Cleaner
Foil Type Cleaner
Paper Filter
Piston and Rings
Oil Bath Type Cleaner
Foam Type
Fuels and Lubricants
Master Troubleshooting Chart
Service Data
Tolerances and Clearances
RPM Settings
Speed Settings Table
Specifications
Torque Data
Special Tools
Coil Test Data
Condenser Test Data
Magneto Test Data
Test Instrument
To Check Trigger Coils Early and Late Production
To Check Charging Coil and Electronics Group
Engine Overhaul
Engine Teardown and Inspection
Reed Adapter Inspection
Flywheel
Stator Assembly
Baffle and Cylinder Head
Piston and Rod Removal
Crankcase Head Assembly
Crankshaft Removal
Carburetor Identification
Carburetor Nomenclature
Carburetor Inspection
Carburetor Disassembly and Cleaning
Float Bowl Housing Disassembly
Main Metering Nozzle
Fuel and Air Flow
Cross Section of Walbro Carburetor
Needle and Seat Inspection
Carburetor Reassembly
Float Adjustment
Meter Nozzle Installation
Magneto
Stator Assembly Inspection
Ignition Timing
Point Setting
Starter
Tension Release of Rewind Spring
Starter Rope Replacement
Spring Installation
Starter Reassembly
Up and Away Starter Disassembly
Final Engine Adjustments
Up and Away Starter Reassembly and Spring Tensioning
High-Speed Needle
Idle Adjustment
Choke Adjustments
Engine Control Cable
Cleaning and Storage
Exploded Views and Parts List
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Service Data
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Specifications
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Table of Contents
Troubleshooting
Troubleshooting
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Master troubleshooting chart
49
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