APRILIA TUONO V4 R 2010 Service Station Manual page 327

TUONO V4 R
•
if the piston 1 connecting rod is re-
placed, the one relative to piston 2
must also be replaced and vice versa;
•
if the piston 3 connecting rod is re-
placed, the one relative to piston 4
must also be replaced and vice versa;
The connecting rod class is stamped on its left
side, viewed from the front, from the side with the
bevelling on the big end hole.
ONLY ONE CONNECTING ROD SELECTION CLASS IS
SPECIFIED FOR REPLACEMENT PARTS, INDICATED
WITH THE LETTERS D-D.
Bushing selection
CRANKSHAFT BUSHINGS
CRANKCASE CATEGORY
Three crankcase classes are available (A - B- C)
which differentiate in the diameter of the hole in the
bearings.
The category is marked on the crankcase, on the
right side, in the area below the crankshaft.
Different classes of bearings can be used (e.g.: A
- B - C or B - B - C or A - B - A ....).
Engine
ENG - 327