Kohler KDI 2504TM Workshop Manual page 109

INFORMATION ABOUT OVERHAULING
8.6.2 Valve seats check
Thoroughly clean the valves and their seats with.
Measure indentation B of each valve with regard to the cylinder
head surface C, which is to be a MIN of 0.60 mm and MAX of
0.85 mm.
The B MAX indentation allowed on worn components is 1.10
mm.
If the measured value does not correspond with the values
indicated, replace the worn component.
Important
•
The seats must be worked after driving to reach value B,
go to a rectification workshop for such operations.
8.6.3 Valve springs
Using a dynamometer, subject the spring to two different forces
(in Tab. 8.9) and check that the length of the spring corresponds
to the values indicated in the table.
(*1)
The code ED0057551850-S is installed from S/N 4418801760
Tab 8.9
WEIGHT (kg)
ED0057552810-S
ED0057551850-S
0
13.5
19.5
LENGHT (mm)
(*1)
0 Z 48.34
20.4 Z1 30.00
Z2
29.8 22.00
Fig 8.21
Fig 8.22
8
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