Husqvarna 2009 TE 310 Workshop Manual page 161

Check the connecting rod side float into the flywheels. It must be 0,4÷0,5 mm
(0.0157÷0.0197 in).
Check the alignment of the crankshaft between centers.
Runout may not exceed 0.02 mm (0.0008 in) at the bearing positions.
Make an initial alignment of the flywheel using a copper hammer.
Part. N. H0368 (09-2008)
ENGINE REASSEMBLY
H.15
A = 0,4 ÷ 0,5 mm
(0,0157÷0,0197 in.)
B = 0,5 mm (0,02 in.)
Aligned with half-flywheel