Betamotor EVO 4t Bedienungsanleitung PDF herunterladen (Seite 69)

ASSEM BLY

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Pass the camchain around the camshaft sprocket,

and fit onto the camshaft first the sealed bearing (8)

and then the bearing on the chain side (9).

Take care to time up the camshaft properly. The

crankshaft is locked at TDC by the special bolt which

was fitted earlier (see 4.11). Position the camshaft

so that the timing mark (A) is horizontal on the ex-

haust valve side. In this way, the entire assembly is

positioned at TDC between the compression stroke

and the combustion stroke, i.e. when the valves are

at rest and there is clearance in the rockers which

will later need to be adjusted, as is explained fur-

ther on in this manual. This facilitates the fitting of

the head cover and, consequently, the rockers.

N.B. The correct way to check the timing is to ten-

sion the camchain by pressing on the movable chain

guide with a screwdriver.

Screw the water pump shaft (6) into the gear (5)

(which is locked by the camchain) using the appro-

priate special tool.

Locate the dowels (12) in the head and fit the cam-

shaft end plug (11) with its O-ring (10) into place

in its groove.

Put some silicone sealant on the contact surface

with the head cover and refit the cover (13) to the

cylinder head, ensuring that the rocker spindles are

positioned correctly, i.e. so as to allow the subse-

quent fitting of the cover bolts.

Fit the head cover bolts: two M6x25 (14), four

M6x55 (16) with the corresponding washers (15),

and four M6x35 (17), tightening them to 10 Nm.

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Betamotor EVO 4t Bedienungsanleitung Seite 69