Betamotor EVO 4t, Руководство по ремонту, Страница: 72 / 80

66
ASSEMBLY
betamotor.com
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
exhaust valve side. In this way, the entire assem-
bly is positioned at TDC between the compression
stroke and the combustion stroke, i.e. when the val-
ves are at rest and there is clearance in the rockers
which will later need to be adjusted, as is explained
further 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 tension
the camchain by pressing on the movable chain gui-
de 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 (11) in the head and fit the
camshaft end plug (10) in its groove.
Put some silicone sealant on the contact surface
with the head cover and refit the cover (12) 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 (13), four
M6x55 (15) with the corresponding washers (14),
and four M6x35 (16), tightening them to 10 Nm.
9
8
A