Stihl MS 500i

MS 500i34
N Unlock and remove the black connector (14).
N Take out the screw (7).
N Insert a 5 mm pin punch in the holes (arrows) and pry
the controller (6) out of the handle housing from below
and then lift it away.
N Remove the ignition lead, @ 19.3.
19.8 Installing the Controller
It will not be possible to tune the saw correctly if the
controller is replaced without first transferring the data
from the original controller to the new controller. The
engine can be seriously damaged.
If the controller has to be replaced, perform the following
steps:
– Connect the saw to the STIHL MDG 1 analyzer.
– Start STIHL diagnostic software.
– Carry out function “Replacing controller”.
N Install the ignition lead, @ 19.6.
N Fit the controller (6) in the handle housing.
N Insert and tighten down the screw (7).
N Insert and engage black connector (14) in black
socket.
N Use punch-down tool 5910 890 4000 to push wiring
harness of black connector (14) into the cable holder
(arrow).
N Insert and engage blue connector (13) in blue socket.
N Position shrink-on tube (15) on wires from blue
connector (13) as shown in the illustration.
N Use punch-down tool 5910 890 4000 to push shrink-
on tube (15) into the cable holder (arrow).
N Insert and engage white connector (12) in white
socket.
N Use punch-down tool 5910 890 4000 to push wires
from white connector (12) into the guide (arrow) so
that the wire loop is between the guide and connector.
N Fit cover (8) so that it snaps into place.
N Install throttle body and sleeve, @ 15.5.
N Install the filter base, @ 15.3.
N Mount the shroud.
N Install the air filter.
N Fit the filter cover.
N Calibrate the saw, @ 4.
The controller is optimally adjusted to suit the mechanical
and mechatronic components.
12
13
14
6
15
0000-GXX-5618-A0