Cylinder; Piston - Husqvarna TE 250 Workshop Manual

ENGINE OVERHAULING

Cylinder

The cylinder liner bore should be completely smooth, without grooving or scor-
ing. To obtain the taper and the ovality of the cylinder liner bore take measure-
ments at three different heights and in two positions at 90° to each other.
Max taper (wear limit): 0.0019 in.
Max ovality (wear limit): 0.0019 in.
If the wear limits are greater than those prescribed, then replace the cylinder
with the piston; reboring the cylinder liner is not possible since the cylinder liner
has been given a special hardening treatment.

Piston

Thoroughly clean the piston crown and piston ring grooves of any carbon de-
posits. Carry out a visual check and a measurement check of the piston, there
should be no signs of scoring, excessive wear, cracks or other damage.
Part. N. 8000 B0148 (02-2008) G.11