Valve Bucket Inspection; Valve Installation - Husqvarna TC 250 2010 Workshop Manual

ENGINE OVERHAUL
Check the valve springs for proper squareness.
Maximum acceptable deviation is 1.5 mm on each side.

Valve bucket inspection

Check that the valve buckets (1) slides freely in their seats.
If not so, replace them.

Valve installation

Smear valve guides and stems with oil before installation.
Install spring seat (1) and springs (2) - place spring (a) at head end - and finally
the spring retainer (3).
Use tool no. 8000 A7317 to compress the valve springs and install the valve
collets (4).
Do not compress the springs too much and avoid damage to the
cylinder head.
G.8 Part. N. 8000 H1489 (10-2009)