8.1
Section 8
Disassembly
8
Section 8
Disassembly
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.
General
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
The following sequence is suggested for complete
engine disassembly. The sequence can be varied to
accommodate options or special equipment.
1. Disconnect spark plug leads.
2. Shut off fuel supply.
3. Drain oil from crankcase and remove oil filter.
4. Remove muffler.
5. Remove cylinder shrouds and blower housing.
6. Remove electric starter motor.
7. Remove air cleaner assembly.
8. Remove control bracket, governor springs, and
lever.
9. Remove carburetor.
10. Remove Oil Sentry™ (if equipped).
11. Remove baffles and intake manifold.
12. Remove oil cooler.
13. Remove oil filter housing and oil filter adapter.
14. Remove ignition modules.
15. Remove grass screen and cooling fan
16. Remove flywheel.
17. Remove stator, rectifier-regulator, and wiring
harness.
18. Remove backing shroud assembly.
19. Remove spark plugs.
20. Remove valve covers and fuel pump.
21. Remove cylinder heads and hydraulic lifters.
22. Disassemble cylinder heads.
23. Remove breather assembly.
24. Remove oil reservoir and pickup screen.
25. Remove closure plate assembly.
26. Remove camshaft.
27. Remove connecting rods with pistons and rings.
28. Remove crankshaft.
29. Removal of governor gear assembly.
30. Remove governor yoke, cross shaft, and seal.
31. Remove lifter feed cover and gaskets.
32. Remove flywheel and PTO end oil seals.
33. Removal of main bearings.
Disconnect Spark Plug Leads
1. Disconnect the leads from the spark plugs. See
Figure 8-1.
NOTE
: Pull on boot only, to prevent damage to
spark plug lead.
Figure 8-1. Disconnect Both Spark Plug Leads.
