The average homeowner spends one to two hours per week mowing his lawn. It's a job most people don't look forward to, and it makes the job even harder if your lawn mower engine has not been maintained properly. In about an hour you can maximize your mower's effectiveness by performing a simple engine tune-up and sharpening the blade. If your lawn mower is equipped with an engine that is between 3-1/2 and 8 horsepower, this step-by-step guide will teach you how to keep it in top order all season long.

How To Tune Up Your Gas-Powered Lawn Mower

by Roger Vizi

CONTENTS

INTRODUCTION

4-STROKE GAS ENGINES

COMPONENTS OF A 4-STROKE GAS ENGINE

Crankshaft

Camshaft

Valves

Connecting Rod and Piston

Spark Plug

Carburetor

Ignition Coil

Points and Condenser

PREPARING FOR THE TUNE-UP

Safety

Tools Needed

PERFORMING THE TUNE-UP

Changing the Oil

Removing and Sharpening the Blade

Removing the Blower Housing

Removing the Flywheel

Inspecting the Points and Condenser

Replacing the Points and Condenser

Removing, Inspecting, and Replacing the Spark Plug

Cleaning and Replacing the Air Filter

Setting the Air/Fuel Mixture

TESTING THE ENGINE FOR PROPER OPERATION

CONCLUSION

MORE RESOURCES

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