Cylinder-Piston Fitting - Husqvarna TC 450 Workshop Manual

ENGINE OVERHAULING
Cylinder piston fitting
Cylinder bore
Use an internal micrometer (Dc) and take the reading at "A" distance from the
top 0.80 in. (310 cc) or 0.39 in. (450-510 cc).
Piston diameter
Take the piston diameter (Dp) at "B" distance of 8 mm/0.31 in. (TE-SMR 450/510),
9 mm/0.35 in. (TE 310, TC-TXC 450-510), from the top. The clearance is = Dc-Dp.
MODEL
310
450-510
G.12
CLEARANCE (Dc-Dp)
0,037÷0,063 mm
(0.00146÷0.00248 in.)
0,025÷0,055 mm
(0.0010÷0.0022 in.)
Part. N. 8000 H1344 (10-2009)
WEAR LIMIT
0,15 mm
(0.006 in.)
0,12 mm
(0.0047 in.)