Installing The Valves - Husqvarna FC 250 2018 Repair Manual

17 ENGINE
17.4.26
212
302808-10

Installing the valves

-
Using a straightedge and the special tool, check the sealing
area of the cylinder for distortion.
I Feeler gauge (59029041100)
Cylinder/cylinder head - dis-
tortion of sealing area
If the measured value does not meet specifications:
-
Change the cylinder head.
f)
-
Check sealing seat of the valves.
Valve - sealing seat width
Intake
Valve - sealing seat width
Exhaust
If the measured value does not meet specifications:
-
Rework the valve seat.
-
Blow compressed air through all oil holes and check that they
are clear.
-
Position valve spring seat
-
Mount the valve corresponding to its installation position.
-
Mount the valve springs.
Info
Mount the outlet spring with the taper facing upward.
Mount the inlet springs with the tighter coil facing
downward.
-
Mount the valve spring retainers.
-
Tension the valve spring with a special tool.
Valve spring mounter (59029019000)
Insert for valve spring lever (79029060000)
Insert for valve spring lever (77029041200)
(0 p. 307)
� 0.10 mm (� 0.0039 in)
1 .40 mm (0.0551 in)
1 .40 mm (0.0551 in)
O. 8.
Mount valve stem seal
(0 p. 306)
(0 p. 312)
(0 p. 309)