If like most do-it-yourselfers you've relied on a sketchy owner's manual or one of those abstruse shop manuals written for professional mechanics to keep your onboard running, here's an end to your frustration. This abundantly-illustrated non-threatening guide is filled with effective maintenance, repair, and advanced troubleshooting advice for two-cycle and four-cycle engines from 2 to 250 horsepower. Although outboard engines have become more reliable, they're also more sophisticated and require more than a passing knowledge of mechanics to troubleshoot and repair. Outboard Engines covers recent developments such as electronic ignition, oil injection systems, and four-stroke powerheads. Your fears about the reliability of your finicky outboard are over! Table of Contents: The Basics: What Makes Your Engine Tick Your Engines Four Basic Needs / Inside Your Engine�The Basic Components / Basic Two-Stroke and Four-Stroke Cycles: The Four-Stroke; The Two-Stroke / The Basics of Troubleshooting. Breaking in a New Engine General Break-in Guidelines: Additives; Oil Grades; Mix Ratio; Operating Procedure. Routine Maintenance Daily Checks and Maintenance / Monthly Checks and Maintenance / Seasonal Checks and Maintenance / Three-Month (or Seasonal) Service Checks: Grease Points; Propeller Inspection ; Gearcase-Oil Change; Cooling System; Impeller Replacement; Cylinder Compression; Fuel System; Automatic Oiler; Steering; Battery; Two Final Adjustments / Special Considerations for Four-Stroke Engines: Sump-Oil Change; Timing-Belt Wear; Valve Clearance Check / Maintenance in a Nutshell: Daily Checks; Monthly Checks; Seasonal Checks; Additional Four-Stroke Annual Service / Off-Season Storage and Spring Commissioning: Winter Storage; Spring Commissioning. How to Find the Trouble Listen, Look, and Feel for Trouble / A Troubleshooting Plan of Attack: Ten Categories of Trouble / Symptoms and Probable Causes: Engine Will Not Start; Engine Runs Irregularly or Stalls; Rough Idle; Engine Speed Will Not Increase; Engine Overheats; Engine Speed Higher than Normal; Engine Speed Lower than Normal; Boat Speed Low; Steering Pulls to One Side; Excessive Blue Smoke. Isolating Ignition System Problems Ignition Components and What They Do / Ignition Tests / Testing for Spark / Testing the Plugs / Ignition Problems�Tests and Procedures: Ignition Problems Checklist / Testing Spark-Plug Wires / Testing High-Tension Coils / Testing Charge and Sensor Coils and Ignition Module: Testing the Charge Coil; Testing the Sensor Coil; Testing Coil Voltages; Charge-Coil Test; Sensor-Coil Test; Ignition-Module Test; Under-the-Flywheel Systems / Some Additional Checks: Testing Your Stop Switch; Testing a Mercury (Tilt) Stop Switch / Final Checks and Ignition Timing: Checking the Timing; CDI Unit Problems; Optical Timing Systems; Summing It Up. The Charging and Starting Systems Charging�The Key Components: How It All Works / Testing Your Battery: Battery Capacity Test; Battery Drain Test / Charging System Problems and Possible Causes: Verifying Charging-System Output; Testing Your AC Voltage Rectifier / Testing the Stator Windings: The Sequence to Follow / Troubleshooting Electric Starter Circuits: Voltage-Drop Test / Testing the Neutral Safety Switch: Neutral Switch Misadjustment / Testing an Ignition Switch: Other Starter-Related Problems / Manual Starters: Winding On a New Pull Cord; Replacing the Coil Spring. The Fuel and Lubrication Systems Fuel-Delivery Systems / The Spin-On Fuel/Water Separator / Fuel System Safety Considerations / Fuel-System Basics and Common Problems: Fuel-Tank Strainer; Anti-Siphon Valve; Flushing the Tank; Portable-Tank Strainers; The Fuel/Water Separator; The Primer Bulb; Fuel Pump Strainer / Fuel Supply Problems: The Fuel Pump; Checking the Seal; Fuel Pump Removal and Disassembly / Fuel Delivery Step by Step / Classic Symptoms of Carburetor Problems: Mixing Air and Fuel / How a Carburetor Works: The Float Circuit; The Idle Cir

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