User Manual

should be kept, and the cylinder head should be heated integrally to about 2000C
when assembly. Then the valve seat can be in -laid, and ream and lap it at the con-
tact
area to make it at 1.3 -·1. 5mm in width, valve setting value is 0.6 -1. Omm
down.
Fig. 1 Dlagram of reconditioning valve seat
There are cylinder heat gaskets between the cylinder
and the cylinder block. And the
cylinder
head is fastened to the cylinder block by 18 bolts. The cylinder head bolts
should
be tightened evenly by three times one by one in regulated order and torque.
(Fig.
2)
Fig. 2 The sequence of tightening cylinder head bolts
3. Piston and Connecting Rod Assembly
The piston and connecting rod assembly are constituted by piston, piston ring, pis-
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