9.1
Section 9
Disassembly
9
Section 9
Disassembly
General
The following sequence is suggested for complete
engine disassembly. This procedure can be varied to
accommodate options or special equipment.
Clean all parts thoroughly as the engine is
disassembled. Only clean parts can be accurately
inspected and gauged for wear or damage. There are
many commercially available cleaners that will
quickly remove grease, oil, and grime from engine
parts. When such a cleaner is used, follow the
Manufacturer’s instructions and safety precautions
carefully.
Make sure all traces of the cleaner are removed before
the engine is reassembled and placed into operation.
Even small amounts of these cleaners can quickly
break down the lubricating properties of engine oil.
Typical Disassembly Sequence
1. Remove spark plug.
2. Drain oil and remove oil filter.
3. Remove muffler.
4. Remove air cleaner.
5. Remove throttle control bracket.
6. Remove carburetor and governor lever.
7. Remove fuel tank.
8. Remove retractable starter.
9. Remove fuel pump.
10. Remove electrical starter.
11. Remove rectifier-regulator.
12. Remove Oil Sentry.
13. Remove valve cover.
14. Remove cylinder head baffle.
15. Remove blower housing and baffles.
16. Remove carburetor adapter and heat deflector.
17. Remove ignition module.
18. Remove fuel line.
19. Remove cylinder head, push rods, and gasket.
20. Remove drive cup, grass screen, flywheel, and
fan.
21. Remove stator and wiring harness.
22. Remove closure plate.
23. Remove camshaft and hydraulic lifters.
24. Remove balance shaft.
25. Remove connecting rod and piston.
26. Remove crankshaft.
27. Remove flywheel end oil seal.
28. Remove governor cross shaft and governor gear.
Disconnect Spark Plug Lead
NOTE: Pull on boot only, to prevent damage to spark
plug lead.
Drain Oil From Crankcase and Remove
Oil Filter
1. Remove the oil drain plug and oil fill cap/
dipstick. See Figure 9-1.
2. Allow ample time for the oil to drain from the
crankcase and oil filter.
3. Remove and discard the oil filter.
Figure 9-1. Location of Oil Drain Plug and Filter.
Oil Drain Plug
Oil Filter
WARNING: Accidental Starts!
Disabling engine. Accidental starting can cause severe injury or death. Before working on the engine or equipment,
disable the engine as follows: 1) Disconnect the spark plug lead(s). 2) Disconnect negative (-) battery cable from battery.
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