Check, Adjust The Valve Clearance - Fayat Group BOMAG BP 12/40 Operating Instructions Manual

Maintenance every year
5.19 Check, adjust the valve
clearance
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Note
Check and adjust only when the engine is cold.
Fig. 49
Pull off spark plug socket 1 (Fig. 49).
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Pull off ventilation hose (2).
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Remove valve cover (3) with gasket (4).
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Set the piston to top dead centre position of
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the compression stroke.
Fig. 50
For this purpose align triangle mark 1 (Fig. 50)
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on the starter disc to the top bore (2).
BP 12/40, BP 20/50, BP 25/50
Fig. 51
Valve clearance(Fig. 51):
Exhaust valve (A) = 0,20 ± 0,02 mm
Intake valve (E) = 0,15 ± 0,02 mm
Fig. 52
Check the valve clearance (1) (Fig. 52) with a
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feeler gauge.
In order to adjust the valves hold the hexagon
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nut (4) on the rocker lever and loosen the
counter nut.
Adjust hexagon nut (4) on the rocker arm so
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that the feeler gauge fits between rocker arm
and valve shaft with noticeable resistance af-
ter retightening counter nut (3).
Assemble the valve cover (3) (Fig. 49) with a
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new gasket and tighten it evenly.
Push the ventilation hose (2) into the socket
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(5).
BOMAG
Maintenance every year
49