Mounting The Timing Chain Tensioner; Adjusting The Valve Clearance - HUSABERG FE 450 Repair Manual

ASSEMBLING THE ENGINE
– Degrease the sealing area on the cylinder head and
the cylinder head top section and apply a thin layer of
silicone gasket sealant 309098 to the sealing area of
the cylinder head.
– Mount the dowels and the cylinder head top section.
– Mount the bolts and tighten to 10 Nm (see photo for
bolt lengths).
NOTE: mount the M6x55 and M6x60 bolts with
new copper sealing washers.

MOUNTING THE TIMING CHAIN TENSIONER

– Mount the timing chain tensioner with a new gasket
but without the spring and plug.
CAUTION: make sure that the pressure bolt is
completely retracted (see photo), otherwise the
timing chain will be overtensioned.
– Mount the 2 bolts (M6x20) and tighten to 10 Nm.
– Use a screwdriver to press in the pressure bolt until
you feel a slight resistance. Then press in one notch
further.
– Mount the pressure spring and plug with a new seal
ring and tighten to 10 Nm.

ADJUSTING THE VALVE CLEARANCE

– The valve clearance (A) is measured between the valve
shaft and the adjusting screw when the engine is cold.
Valve clearance: 0.12 mm
CAUTION: if the piston is not in the top ignition
dead center position, the valves will be
actuated by the rocker arms and the valve
clearance cannot be correctly adjusted. In this
case, turn the engine one revolution further and
lock again.
– After adjusting, check the valve clearance again and
tighten the counternuts to 11 Nm.
– Mount the 2 valve covers with new gaskets and bolts
(AH M5x15 bolt). Tighten the bolts to 6 Nm.
M6x55
M6x45
M6x60
M6x35
M6x25
1
A
M6x55
M6x35
M6x25
E
7
2