Polini THOR 303 Notice D'utilisation page 18

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9.4- STARTER ROPE REPLACEMENT (FLASH STARTER)
Remove the starter from the engine unscrewing the 4 screws (Photo 6).
Remove the handle knot. Be careful since the central wheel will spin till
the spring is completely discharged: keep it and discharge it slowly to
avoid damages or possible injuries. Remove the central screw and its
cover (photo 7).
! ATTENTION! Under the cover there are two teeth for the starter jaw
(check their condition and if worn replace them); under them 2 small
calipers. Be very careful not to lose these small parts.
Prepare the new rope and tie a knot at the top. Remove the plastic wheel
and the old rope. Thread the new rope in its hole (photo 8),
wind up the rope on the wheel (according to the entrance sense of the
rope on the wheel) (Photo 9).
ENGLISH
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Now insert the plastic wheel in its housing again, and check through
the hole that the internal spring hook is perfectly coupled (Photo 10).
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place the springs, the teeth for the starter jaw and screw the cover again
using medium thread-locker.
All the parts in movement, including the springs, must be well lubricated.
Now go on by charging the return spring: take the head of the rope
leaving 10-20 cm coming out the hole with "u" shape on the wheel
side. Turn the wheel 6,5 times in counter clock-wise sense till it stops in
front of the exit hole on the aluminium case. Keeping the plastic wheel
stopped, pass the rope through the case hole. Insert the handle and the
washer and tie a single knot as shown in (photo 11).
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! ATTENTION! verify that the return spring does not reach the end
of the stroke. Exttract the rope completely and turn the wheel again to
check that it can make at least one turn before stopping.
This test is very important because the spring hasn't been studied to
reach the end of the stroke and, if it happens, the spring will break.
Reassemble the starter in the engine and tight the 4 screws (M5) with
strength (see the tightening torque values table).
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