Section 03 ENGINE
Sub-Section 05 (TOP END)
03-05-11
1. Feeler gauge
2. Rectangular ring (bottom)
Ring End Gap
Position ring halfway between exhaust port and
top of cylinder.
NOTE:
In order to correctly position ring in cylin-
der, use piston as a pusher.
Using a feeler gauge, check ring end gap. If gap
exceeds specified tolerance, rings should be re-
placed.
1. Top of cylinder
2. Ring end gap
16, Cylinder Base Gasket
Five thicknesses of cylinder base gaskets are
available for a precise adjustment of the combus-
tion chamber volume.
To determine gasket thickness, refer to the identi-
fication holes on the gasket.
1. Identification holes
ASSEMBLY
Assembly is essentially the reverse of disassem-
bly procedures. However pay particular attention
to the following.
787 Engine
30, RAVE Valve
Make sure to insert O-ring
no. 25
onto rod of slid-
ing valve
no. 24
.
The TOP position of the sliding valve
no. 24
is in-
dicated on one side.
F01D0XA
1
2
F01D0OA
1
2
GASKET
THICKNESS
IDENTIFICATION
HOLES
0.3 mm
(.012 in)
3
0.4 mm
(.016 in)
4
0.5 mm
(.020 in)
5
0.6 mm
(.024 in)
6
0.8 mm
(.031 in)
8
F01D67A
1
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