MOTO GUZZI V1000 G5 Workshop Manual page 135

and when the pinion turns faster, the coupling is
interrupted.
To obtain this interruption, the rollers are allowed
to move on a slanting a track in such a way that
on
starting they clamp the free wheel stop ring in the
narrow space with the round part of the pinion.
When the engine starts up, the rollers which are
pushed by the pinion which is rotating faster than
the armature, overcome the resistance offered by
the springs and move over to the wider space where
they can only lightly contact the free wheel restrain-
er and the pinion.
The springs, either directly or through bushes or
guide pins, push the rollers in the rest position in
the narrow section of the hollow space to allow the
pinion coupling with the free wheel when the start
button is pushed.
In this so called external dogs of the free wheel, the
sliding sections (the dogs) are machined In the free
wheel ring which turns externally and is connected
to the armatu re shaft by the driving device (entrai-
ner). This particular set up offers the advantage of
allowing the use of a small size pinion and also the
starting torque when the engine exceeds a certain
number of revolutions which goes for longer life of
the starter motor componen ts and bearings.
Rotor braking
In order that the starter motor may stop quickly af-
ter the contact is interrupted and so allow, if neces-
sary, to make a new starting attempt, the starter
motor incorporates and armature brake (fig. 188 / 10).
This is mostly made up of a mechanical brake (disc
brake).
How to cure possible breakdowns
In case of any breakdown. the first thing to be consi-
dered is that the cause may not necessarily depend
on the starter motor, battery, switches, electrical
conductors or connections, parts not properly groun-
ded but also to fault In the ignition or carburation
systems.
The following table sums up the most common
breakdowns due only to the starter motor.
Engaging lever at end 01 travel. start 01 winding
wilh no current. Current Irom meins arrives, pinion
completely engaged The engine is revolved
,- --.
yf==-=F;;:::~
I
I
Driver moved by armature rolalion (scre wing down).
The engine slart rotating .
'--_ _ _ _ _ _ _ _ _ _ _ _ _ _ ---.-J1 88/ 8
r+- -
Roller
wheel ring
h,b
Free wheel wilh external wedges.
'--_ _ _ _ _ _ _ __ _ _ _ _ __ ---.-J188/ 9
Braking disc
Engaging spring
, " " " " , lever
Brake disc
Engaging lever in idle
posillon (braked)
'--_ _ _ _ _ _ _ __ _ _ _ _ _ _ _ -'188/ 10
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