10
10.1
Section 10
Reassembly
Section 10
Reassembly
General
NOTE: Make sure the engine is assembled using
all specifi ed torque values, tightening
sequences and clearances. Failure to observe
specifi cations could cause severe engine wear
or damage. Always use new gaskets. Apply a
small amount of oil to the threads of critical
fasteners before assembly, unless a Sealant or
Loctite
®
is specifi ed or preapplied.
Make sure all traces of any cleaner are removed before
the engine is assembled and placed into operation.
Even small amounts of these cleaners can quickly
break down the lubricating properties of engine oil.
Check the closure plate, crankcase, cylinder heads,
to be certain that all old sealing material has been
removed. Use gasket remover, lacquer thinner, or
paint remover to remove any remaining traces. Clean
the surfaces with isopropyl alcohol, acetone, lacquer
thinner, or electrical contact cleaner.
Typical Reassembly Sequence
The following sequence is suggested for complete
engine reassembly. This procedure assumes that all
components are new or have been reconditioned, and
all component subassembly work has been completed.
The sequence may vary to accommodate options or
special equipment. Detailed procedures follow:
1. Install fl ywheel end oil seal.
2. Install cranksha .
3. Install connecting rods with pistons and rings.
4. Install governor cross sha .
5. Install camsha .
6. Install closure plate oil seal.
7. Install closure plate assembly.
8. Install stator and backing plate.
9. Install fl ywheel.
10. Install fl ywheel fan.
11. Install hydraulic li ers and cylinder heads.
12. Install push rods and rocker arms.
13. Install spark plugs.
14. Install intake manifold.
15. Install fuel injectors.
16. Install manifold absolute pressure (MAP) sensor.
17. Install cranksha position sensor.
18. Install valve covers.
19. Install breather cover and inner baffl es.
20. Install oil temperature sensor.
21. Install Oil Sentry
TM
.
22. Install blower housing and outer baffl es.
23. Reconnect rectifi er-regulator.
24. Install grass screen.
25. Install electric starter motor and electronic control
unit (ECU) bracket.
26. Install electronic control unit (ECU).
27. Install thro le body.
28. Install li fuel pump and fuel pump module.
29. Install external governor controls.
30. Install thro le control panel.
31. Install air cleaner assembly (see Section 4).
32. Install muffl er.
33. Install oil cooler.
34. Install oil fi lter and fi ll crankcase with oil.
35. Connect spark plug leads.
Install Flywheel End Oil Seal
1. Make sure that the seal bore of the crankcase is
clean and free of any nicks or burrs. See Figure 10-1.
Figure 10-1. Seal Bore of Crankcase.
2. Apply a light coat of clean engine oil to the
outside diameter of the oil seal.
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