APRILIA RSV4 RR 2017 Service Station Manual page 368

Engine
•
Insert the tone wheel on the crank-
shaft.
The crankshaft and the tone wheel have a bevel
that identifies the fitting direction.
•
Tighten the tone wheel fixing screw.
•
Remove the special tool.
Specific tooling
020850Y Primary gear lock
Installing connecting rods - pistons
The piston rings are different and must be fitted
with the "KDN5" markings (for the upper one)(A)
and "K-TOP and KDN5" markings (for the lower
one )(B) facing upward.
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 fitted pistons have two selections A and B.
Therefore they are coupled with the cylinder ac-
cording to the selection of the latter, which is
marked on the upper crankcase halves.
ENG - 368
RSV4 RR-RF