Fitting Cylinder Heads; Valve Clearance - Kohler KD 477-2 Workshop Manual

76
77
78
79
KD 477-2 Workshop Manual_cod. ED0053029370_1° ed_ rev. 00
Adjustment is effected by inserting copper washers between the in-
jector and injector supporting faces on the heads (fig. 76). Washer
thickness 1 mm.

Fitting cylinder heads

Insert oil seal O-rings on rocker arm housing and fit the cylinder head
in place. Insert 0.5 mm copper gaskets between the surfaces. (fig.
77).
Make sure the oil seal rings are housed properly in the he-
ads to avoid oil leaks.
Align heads using a manifold or a metallic bar as shown in fig. 78.
Tighten down cylinder head nuts uniformly (fig. 78) increasing 1 kgm
at every turn until a pressure is reached of:

Valve clearance

The clearance between valves and rockers with the engine cold (fig.
79) is:
The operation must be carried out with the pistons at their top dead
center compression position.
ENGINE ASSEMBLY
5 kgm (49 Nm)
0,15 mm
intake/exhaust
XIII
- 39 -