Small Engine Troubleshooting: Identifying and Solving Common Problems, Slides of Applied Mechanics

Download Small Engine Troubleshooting: Identifying and Solving Common Problems and more Slides Applied Mechanics in PDF only on Docsity! Small Engine Troubleshooting Docsity.com Small Engine Troubleshooting • Small Engines are machines that can give great assistance in performing many tasks. • They are built very rugged and can last for many years with the proper care. Docsity.com Small Engine Troubleshooting • Tonight we will examine how to identify the problem you may face with a small engine. • We will look at the FACTS • F—Fuel • A – Air • C – Compression • T – Timing • S -- Spark Docsity.com Small Engine Troubleshooting • The first thing that needs to be identified is what type of engine you have. • Each engine has an identification number located on the engine. • Some are on the engine housing, some are on the valve cover, and some are on a side plate. Docsity.com Small Engine Troubleshooting • This number will be a five or six digit number. • Example OHV – 121332 0036 • Example L-Head – 93302 0017 • Each of these numbers tells you something about your engine. (Refer to handout) Docsity.com Small Engine Troubleshooting • AIR – Air Filters and Cooling systems • Types of Air Filters … – 1. Oiled-foam – 2. Paper type – 3. Dual-element Docsity.com Small Engine Troubleshooting • Air Cleaner Service – – Air filters should be cleaned every 25 hours of use. – Foam type elements can be cleaned using soap and water. Add a small amount of oil and squeeze to saturate the element. – Paper type elements can be cleaned by tapping gently on a flat surface or by using compressed air. Docsity.com Small Engine Troubleshooting • COMPRESSION -- This is necessary for the engine to reach its maximum efficiency. • Loss can be due to a leak occurs from the valves, rings or cylinder head. • This can be checked by spinning the flywheel counter-clockwise. If the compression is adequate the flywheel should rebound sharply. Docsity.com Small Engine Troubleshooting • Spark (Cont.) • The spark can be checked using a spark tester. • Simply connect the spark plug lead to the tester and ground the clamp to the engine. • Pull the rewind starter and check for spark output in the window. Docsity.com Small Engine Troubleshooting • Routine Maintenance – • Every 25 hours – Check, clean the air filter. • Every 50 hours – Change engine oil, Replace in-line fuel filter. • Every 100 hours – Replace Spark Plug Docsity.com Small Engine Troubleshooting • End-of-season Maintenance • 1. Drain the gasoline, or add a fuel stabilizer. • 2. Change the engine oil. • 3. Seal the fuel cap.– cover with aluminum foil and seal with rubber band. • 4. Fog the engine. • 5. Clean and re-gap the spark plug. Docsity.com