Outcomes
In order to successfully complete this course, the student will:
1. Label the parts of a 2-cycle engine and select the description that correctly describes the function of the following parts:
1A. The piston
1B. The rings
1C. The crankshaft
1D. The cylinder
1E. The crankcase
1F. The cylinder head
1G. The transfer ports
1H. The induction system
1I. The exhaust system
2. Remove a spark plug and determine rich or lean fuel condition by examining the spark plug and the piston top.
3. Examine the cylinder and determine if there is physical damage to the upper cylinder area of the engine.
4. Remove the exhaust pipe and/or flange and examine the cylinder, piston, and connecting rod through the exhaust port to determine problems with the engine bottom end.
5. Inspect the ignition timing and determine if the timing is within specifications, then evaluate the role timing may have in engine performance.
6. Perform a compression test and evaluate the results.
7. Perform a bottom end pressure test and evaluate the results.
8. Evaluate the top end of a powersports 2-cycle engine and determine if damage exists and recommend repairs required to fix the engine.
9. Disassemble and reassemble the top end of a 2-cycle powersports engine.
10. Deglaze a cylinder and chamfer the ports correctly.
11. Use a bore gauge and a micrometer to determine cylinder serviceability.
12. Evaluate the cylinder condition and propose the most economical repair strategy.
13. Inspect the wrist pin and top end bearings for wear and damage and recommend proper repair procedures.
14. Install cir-clips correctly in pistons.
15. Install rings correctly on pistons.
16. Use the proper tools to install pistons in cylinders.
17. Examine the crankshaft, crankcases, and bottom end components of a 2-cycle powersports engine and assess the need for repair.
18. Disassemble and reassemble a 2-Cycle bottom end.
19. Inspect the engine cases on a 2-cycle powersports engine and determine the most economical repair options.
20. Inspect the crankshaft on a 2-cycle engine and determine the most economical repair option.
21. Inspect all seals, bearings and components attached to an engine and determine the most economical repair options.
22. Repair damaged threaded holes using "Heli-coil" thread repair technology.
23. Examine a 2-cycle crankshaft and diagnose needed repairs.
24. Disassemble and reassemble a single cylinder 2-cycle crankshaft using a press.
25. Examine the disassembled crankshaft and evaluate the serviceability of the components.
26. Apply the proper tools and techniques to true a single cylinder 2-cycle crankshaft to manufacturer’s specifications.
27. Apply the tools and techniques to properly install a single cylinder 2-cycle crankshaft into its case.