M.27
TE 250 - 310 2012 I.E. / TE 250 - 310 2012 I.E. USA
TC 250 2012 - TC 250 2012 I.E. USA
TXC 250 - 310 2012 I.E. USA
H10127
1
TC
TE-TXC
A
= 0,7÷0,8 mm
0,028 ÷ 0,031 in
TC
A
= 0,8÷0,9 mm
0,031 ÷ 0,035 in
H10129
TC
1
1
TE-TXC
H11131
TE-TXC
H11132
ELECTRICAL SYSTEM
Workshop Manual Ed. 12-2011
Electronic control unit (ECU)
Remove saddle and fuel tank (see Section E) to gain access to the electronic
control unit (1).
It is composed of a capacitor, a rectifier circuit that handles input signals received
from the pick-up sensor, a circuit that controls ignition timing advance in accordance
with pick-up sensor inputs and a switching circuit for capacitor discharge.
Spark plug
The spark plug (1) is an "NGK" CR9EB (TE-TXC) and "NGK" CR9EI (TC) spark
plug. Check electrode gap "A". A wider gap may cause difficulties in starting the
engine and overload the coil. A gap that is too narrow may cause difficulties when
accelerating, when idling or poor performance at low speed. Clean off any dirt
around spark plug base before removing the spark plug. It is good practice to
closely inspect the spark plug after removal, as any deposits on it and the colour
of the insulator provide useful indications on spark plug heat rating, carburetion,
ignition and the general condition of the engine. Before refitting the spark plug,
accurately clean the insulator with a wire brush. Smear some graphite grease
on spark plug thread, do it fully home finger tight then tighten it to 10÷12 Nm
torque. Loosen the spark plug then tighten it again to 10÷12 Nm. Spark plugs
which have cracked insulators or corroded electrodes should be replaced.
