GRAUPNER heim Starlet 50 Mode D'emploi page 65

Starlet 50
1.8 Mounting the mechanics on the sub-structure
(bag UM-5)
Fit the circular projections on the main gearbox (assembled in Section 1.6) between the side
frames of the sub-structure, and allow them to engage in the moulded-in sockets. Fix the parts
together using M3 x 16 socket-head cap screws and washers as shown.
Note that two M3 x 30 socket-head cap screws are used in the middle; fit a washer under each
screw head, fit the brass sleeves 4450.34A in the sub-structure side frames, and fit the screws
through the two spacer washers 4445.34 and into the mechanics side frames. When you tighten
these screws, the ends will project through the bottom motor mount screw holes. Fit M3 self-
locking nuts on the projecting shanks to secure the motor mounts.
The next step is to set the proper meshing clearance in the first gearbox stage: loosen the M3 x
16 screws which attach the top layshaft bearing support to the side frames, and also the M3
self-locking nuts at the bottom of the motor mounts, then cut a strip of thin card and wind it in
between the clutch pinion and the gear. Hold the gears firmly together, and tighten all the
screws again firmly in this condition. Apply plenty of thread-lock fluid to the M3 screws in the
motor mounts before you tighten them. Wind the strip of paper out from between the gears, and
the entire gearbox should now rotate freely; note that there should be no detectable play where
the bevel gear engages with the crown gear.
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