ENGINE
4.
Remove the piston and rod assembly. Separate
3. Check all parts for wear or damage and replace if
questionable.
the assembly if necessary, using a snap ring pliers
on the retaining ring (16). Use wrist pin knock out
tool (P/N 602884) to punch out wrist pin (17). (See
Figure 72.)
4. Clean crankcase surfaces with Gel Seal and
Gasket Remover. (See Figure 74.)
17
16
Figure 72
Figure 74
0720-014h
0893-24b
5.
Remove the two bolts and two nuts retaining the
cylinder head to the block. Remove the head and
discard the head gasket. (See Figure 73.)
5. Use a feeler gauge to check that the ring end gap
is to specifications.
Figure 75
0893-014
Figure 73
720-008
6.
Inspect the piston and cylinder (see Figure 75). A
good piston will show most of the machining marks
on the surface. Some things that indicate piston
and cylinder damage are:
Inspection and Repair
1.
2.
Check bearings for wear and freedom of
movement; replace the bearings if questionable.
Check rings for sticking. Remove and check rings
for wear or damage; replace rings if questionable.
Clean any carbon buildup from the ring grooves
before installing new rings. It is best to use a piece
of hardwood to scrape carbon loose. Should you
use a metal tool, you might damage the piston.
42
| Categories | Lawn Mower Manual, Lawn-Boy Lawn Mower Manuals, Toro Lawn Mower Manual |
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| Language | English |
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