KTM 450 EXC-F 2017 Repair Manual page 226

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18
ENGINE
310076-10
224
Position the piston ring
lock.
Insert
the
special
tool
and
press
it
with
force towards
the piston
.
Turn
the
special
tool
clockwise,
thereby pushing the piston ring lock into the
groove.
I
Insertion tool for pi ston ring
lock
(77329030100)
(~!;!!
p.
367)
Ensure that the
piston
ring lock is
in
the
correct
position on both
sides.
Remove
the cloth
.
Keep the timing chain
taut.
Carefully
push
the
cylinder
downward,
letting
the dowels
engage.
(All 500 models)
Move the joints of the
compression
ring
and oi
l
scraper ring
so
they are
offset
by 180°.
Place the
oiled
piston on the
cylinder.
Clamp
the piston
rings
together using the
special
t ool.
I
Piston ring mounting tool (60029015000)
(0
p. 364)
Tap lightly
on
the pist on ring mounting
tool
from
above with
a
plastic
hammer
so that
it
lies
flush
with
the
cylinder
.
. / The special tool must
press
the piston
rings
t ogether properly
and
lie
flush
with
the cylinder.

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