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9.1
Section 9
Disassembly
9
Section 9
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 oil cooler.
5. Remove muffler.
6. Remove air cleaner assembly.
7. Remove control panel.
8. Remove fuel pump.
9. Remove throttle controls.
10. Remove external governor controls.
11. Remove carburetor.
12. Remove electric starter motor.
13. Remove outer baffles and blower housing.
14. Remove Oil Sentry™.
15. Remove inner baffles and breather cover.
16. Remove valve covers.
17. Remove ignition modules.
18. Remove intake manifold.
19. Remove spark plugs.
20. Remove cylinder heads and hydraulic lifters.
21. Remove grass screen and fan.
22. Remove flywheel.
23. Remove stator and backing plates.
24. Remove oil pan assembly.
25. Remove camshaft.
26. Remove governor cross shaft.
27. Remove connecting rods with pistons and rings.
28. Remove crankshaft.
29. Remove flywheel end oil seal.
Disconnect Spark Plug Leads
1. Disconnect the leads from the spark plugs. See
Figure 9-1.
NOTE: Pull on boot only, to prevent damage to
spark plug lead.
Figure 9-1. Disconnect Spark Plug Leads.
Shut Off Fuel Supply
Drain Oil From Crankcase and Remove
Oil Filter
1. Remove oil fill cap/dipstick and one of the oil
drain plugs.