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AUX7403

Course
AUX7403
Course Title
Basic Small Engine Repair

Description

Learn to diagnose and repair 2- and 4-cycle engines, including those found in lawn mowers, weed eaters, chainsaws and leaf blowers.

Objectives

  • Student will be able to explain 2 Cycle Theory of Engines
  • Student will be able to explain 4 Cycle Theory of Engines.
  • Student will be able to describe the fuel systems for small engines.
  • Student will be able to describe and utilize the steps to trouble shooting an engine problem.
  • Student will be able to complete basic maintenance on a 2 and 4 cycle engine.

 

Content

  1. Two Cycle Engine Theory
  • Utilize the Internet to locate the intake and compression stroke information of a two cycle engine.
  • Utilize the Internet to locate Power Exhaust Stroke information of a two cycle engine.
  • Use a computer or poster board to draw the mechanics of both strokes.
  • Bring a 2 cycle engine to class or utilize one in the lab. Use the engine to demonstrate and explain to the instructor how a two cycle engine operates.
  1. Four Cycle Engine Theory

 

  • Utilize the Internet to locate information about the operation of a four cycle engine.
  • Bring a 4 cycle engine to class or utilize one in the lab to demonstrate its operation.

 

  1. Fuel Systems for Small Engines
  • Gasoline – Unleaded is the best for engine life extension.
  • Ethanol – Use no more than 10%.
  • Specialty Fuels: Remember that Reid Vapor Pressure must be determined before using any specialty fuel. Fuels with a rating of less than 50kPa (7psi) should not be used in the summer, and fuel with a rating of 85KPA (psi) should not be used during the winter.
  • Demonstrate the starting difference between using unleaded gasoline and specialty fuel.
  1. Trouble Shooting
  • Fuel System – Outline Steps you use in repairing the lab machine fuel system.*
  • Ignition System – Outline Steps you use in repairing the lab machine engine systems.*
  • Basic Starter – Outline Steps you use in repairing the lab machine starter.*

You may use your machine

  1. Basic Maintenance
  2. Final Project
  • Use your machine or one in the shop to trouble shoot, diagnose and repair a fuel system, ignition system or basic starter of a 2 or 4 cycle engine machine.

 

Prerequisites

  • None

Method of Instruction

  • Traditional and Hands-on

Evaluation

Final Project - trouble shoot, diagnose and repair a fuel system, ignition system or basic starter of a 2 or 2 cycle machine. (your own or one in class).