Kohler KD 500 Workshop Manual - Page 24

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Checks and overhaul

- 24 -

Tapets and rocker arms

Make sure that there is no wear, scoring or signs of seizure

on the surfaces of the tappets (fig. 28). Replace the parts if

necessary.

Tapet and housing coupling play:

Fitting mm

0,16 ÷ 0,215

The rods must be straight with ball shaped surfaces at the ends

and in good conditions (fig. 28).

Replace the parts if the wear on their surfaces exceeds 0.1 mm

(fig. 29).

Coupling play between the tappet and relative housing in the

crankcase:

Fitting mm

0,021 ÷ 0,059

Check the projection of the AC pump rod in relation to the engine

casing surface with the canshaft eccentric in the non-operative

position.

Rod length

53,0 ÷ 53,2

WARNING: the rod projection cannot be adjusted.

Workshop Manual KD500 _ cod. ED0053029390 - 1° ed_rev. 00

Max. wear mm

0,345

Max. wear mm

0,10

Wear limit

Rod projection

0,3

1,45 ÷ 2,05