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4-H Small Engines Project

Program Contact: Yakima County 4-H Program Coordinator
(509) 574-1600 • yakima.4h@wsu.edu

How do internal combustion engines work? What is the difference between a radiator and a carburetor? Participating in a Small Engines project will teach youth the answers to these questions, plus the skills on how to work on and repair small engines. Youth will also learn about potential career paths in this area.

Objectives

Youth will:

  • Learn to service and maintain small engines
  • Understand engine principles and fundamentals
  • Use proper personal safety practices
  • Gain job skills associated with a small-engine related business and marketable skills for the workplace

Closeup of a belt and pulley system on an engine

4-H Small Engines Curriculum

Available from the Extension office or online.

Level 1: Crank It Up

Youth learn about engine parts, engine maintenance, oil grades, spark plugs, cooling systems, and safety labels.

Level 2: Warm It Up

Youth explore internal parts of engines, learn about engine sizes, compression ratios, seasoning their engines, and safety issues. Youth also learn about occupational possibilities and about starting their own business.

Level 3: Tune It Up

Youth tear down and rebuild an engine, use diagnostic tools, research rules and regulations about using small engine machines, and select replacement engines.

Small Engines Curriculum Helper’s Guide

The Helper’s Guide includes group activities, helpful hints for each activity in the three youth guides, and additional small engine project meeting ideas.

Washington 4-H Records, Forms, and Guides

For youth members

Coming soon!

For adult helpers and club leaders

Coming soon!

State STEM Project Resources
A black icon of an engine at left; an line drawing of a hand holding a wrench at right. At center, the title "Small Engines" in black, all of it on an orange background

Helpful Resources

Activity Ideas

Exploring 4-H Small Engines Spark Activity:  Small Engines Scavenger Hunt – Illinois 4-H (PDF)

In Small Engines youth will develop knowledge and skills about engine types, internal parts, tools of the trade, safety issues, and what makes small engines work. They will get hands-on experiences that will help them understand how machines, such as lawn mowers and model airplanes, operate and how to keep them running.

Washington Specific Reference Material

Coming soon!

Other Reference Material

From 4-H Programs

Ready, Set, …Mow! – Ohio 4-H

Small Engines Project Guide – 4-H Canada, Alberta (PDF)

Small Engines Leader Guide – 4-H Canada, Alberta (PDF)

Small But Mighty Machines:  The 4-H Ontario Small Engines Project Reference Book – 4-H Canada, Ontario (PDF)


From Higher Education Institutions

 


From Related Organizations, Journals, and Professionals

4-Stroke Internal Combustion Engine – NASA

How to Repair Small Engines – HowStuffWorks

Small gas engines serve us in many ways. They power lawn mowers, tillers, cultivators, trimmers, edgers, snowblowers, chain saws, pumps, generators, air compressors, and other useful home tools. They also power our fun: outboard boats, snowmobiles, motorcycles, all-terrain vehicles, ultralight aircraft, and other toys. To keep them operating efficiently, an owner of these tools and toys should know about small engines: how they work and what to do when they don’t.


 

Kits, Projects, and Activities from National 4-H

National 4-H Engines, Motors, & Machines Curriculum Collection

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