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Engine
Model
MY 2009/2010 - "V4" Marking
(all engines)
EUROPE MY2011 - "V4"
Marking (all engines)
EUROPE MY2011 - "V4-A"
Marking
EUROPE MY2011 - "V4-A"
Marking
USA MY2011 - "V4-A" Mark-
ing
The piston rings are different and must be fitted
with the markings "R" or "KDN5" (for the upper
one) and "RN" (for the lower one) facing upward.
The upper ring can be of a different type according
to the type of piston used.
The pistons with the letter "W" on the crown next
to the selection marking (A or B), fit an upper ring
(cast iron) different from the pistons that do not
have this marking (chrome steel). This ring can be
identified with the code "KDN 5" which, when fit-
ting, must be placed upwards.
CAUTION
THE TWO RINGS ("R" AND "KDN5") CANNOT BE INTER-
CHANGED, THE PISTONS WITH MARKING "W" HAVE A
DEEPER SEAT FOR THE FIRST RING, WHICH IS WHY
THEY CANNOT BE INTERCHANGED.
The five ring gaps (two piston rings, two oil scraper
rings, one oil scraper spring) are fitted displaced
90º to each other, starting from the exhaust side
stud bolt opposite the chain and continuing clock-
wise.
The pistons fitted provide two selections A and B.
They are then coupled with the cylinder according
to the selection of the latter, which is marked on
the upper semi base.
ENG - 376
P
ISTONS AND PISTON RINGS COUPLING
Engine No.
Crankcase selections
from 1006 to 9269
from 7999 to 8784
from 1002 to 1038 +
from 8785 to 8922
from 1039 to 8784
all engines
Piston type
NO
without marking
YES
with "A"or"B"
marking (*)
YES
with "A"or"B"
marking (*)
YES
with "AW"or"BW"
marking
YES
with "AW"or"BW"
marking
RSV4 ABS
Piston ring
Chrome steel
band
Chrome steel
band
Chrome steel
band
Cast iron band
Cast iron band
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