Husqvarna 2011 TE 630 Workshop Manual page 177

Heat up the left crankcase bearing locations and install the crankcase.
Grease the sprocket bearing bushing (15) and fit it into the bearing; fit the left
crankcase half onto the right crankcase half.
To join the crankcase halves, tap with a plastic hammer.
Tighten the screws (16) using an 8 mm wrench. Make sure to fit the screws in
the correct positions according the pattern shown.
Part. N. 8000 H2051 (02-2010)
ENGINE REASSEMBLY
H.21
12a= M6 x 55 mm
12b= M6 x 55 mm + copper washer
12c= M6 x 55 mm
12d= M6 x 65 mm