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b
UJ
~
~
w
a.
ENGINE
CYLINDER HEAD
CHECKING THE COMPRESSION
623
0001004
Use the compression gauge :
Motometer
ref.
623 OOO 1004.
The
engine
must
be
at
operating
temperature
(approximately
80°
C).
Disconnect
.
· the
fuel
Ii
ne
(
1)
from
the carburettor
and seal
it
off,
·the
lead
n° 3 from the
coil.
Drain the carburettor float bowl
.
-
on XM engines, by
removi
ng the choke jet
-
on XN1 engines, by removing the float bowl
plug.
Lock the
throttle
flap fully
open.
Remove the
spark
plugs.
Beginning on N°
1
cylinder, insert the gauge firmly
in
the plug hole.
- Turn the engine, using the starter, for 4 seconds.
Supersedes page
04 01 and 04 02,
class 1.
WVIW. E. CJ llCJ .OrG
1212 E
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