Cylinder To Piston Clearance; Piston Pin - Husqvarna TE 250 - 310 2011 I.E. Workshop Manual

ENGINE OVERHAUL

Cylinder to piston clearance

Cylinder diameter
Measure inside diameter (Dc) with an internal bore micrometer 25 mm (0.9842
in.) below the edge (distance "A").
Piston diameter
Measure piston diameter (Dp) 7 mm (0.2755 in.) above skirt edge (distance "B").
Clearance is calculated as follows = Dc-Dp.
CLEARANCE (Dc-Dp) SERVICE LIMIT
0.035-0.065 mm 0.10 mm
(0.001379-0.002561 in.) (0.004 in.)

Piston pin

The piston pin (1) must be perfectly smooth, with no signs of scoring, dents or
bluing due to overheating.
G.12 Ed. 07-2010