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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.
CH18-745
19. Remove cylinder heads and hydraulic lifters.
20. Remove grass screen and fan.
21. Remove flywheel.
22. Remove stator and backing plates.
23. Remove closure plate assembly.
24. Remove camshaft.
25. Remove connecting rods with pistons and rings.
26. Remove crankshaft.
27. Remove governor cross shaft.
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.
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 air cleaner assembly.
6. Remove control panel (if so equipped).
7. Remove fuel pump.
8. Remove throttle controls.
9. Remove external governor controls.
10. Remove carburetor.
11. Remove electric starter motor.
12. Remove outer baffles and blower housing.
13. Remove Oil Sentry™ (if so equipped).
14. Remove inner baffles and breather cover.
15. Remove valve covers.
16. Remove ignition modules.
17. Remove intake manifold.
18. Remove spark plugs.
Figure 9-1. Disconnect Both Spark Plug Leads.
Shut Off Fuel Supply
Drain Oil from Crankcase and Remove Oil
Filter
1. Remove the oil fill cap and dipstick and one of the
oil drain plugs.