Operation Manual

57MS 241 C
The flywheel and magnet
poles (arrows) must not display any
signs of damage or blue
discoloration; replace flywheel if
necessary.
– The magnet ring must also be
examined for signs of damage in
versions with handle heating,
b 7.6
– With versions with ErgoStart
pawls, check for damage and
smoothness of motion, b 9.4.
Installation
Flywheel and crankshaft stub must
be free from grease for installation.
Ensure that the machined key
(arrow) engages the slot in the
crankshaft.
– Set the air gap between control
unit and flywheel, b 7.3
0001RA167 TG2310RA110 TG
– Reassemble remaining parts in
reverse order
7.7 Short circuit wire
Ground wire, short-circuit wire and
M-Tronic lead are all combined into
one wiring harness.
Make a contact test of the short
circuit wire if the spark plug and
ignition lead with spark plug boot
are in order.
7.7.1 Contact test
– Remove fan housing, b 9.2
– Move the Master Control lever to
"
0"
– Blade receptacle of the short-
circuit wire must touch the
contact spring (arrow) in position
"
0"
Also carry out a contact and
continuity test of the ground wire
between cable lug and contact
spring, replace wiring harness if
necessary.
– If no fault can be found, test the
M-Tronic in accordance with flow
chart, b 7.8
– Reassemble parts in reverse
order
2310RA155 TG
7.7.2 Removal and installation
– Remove shroud, b 6.4
– Unplug the spark plug boot
– Remove fan housing, b 9.2
– Remove choke rod, b 11.4
: Remove holders (1) and (2)
carefully from the slits (arrows)
and open
: Lift retaining tab (arrow) and
remove angled plug (1)
2410RA165 TG
1
2
2410RA166 TG
1