Zundapp 281 - Page 27

RH
Fit piston ring and support piston
with a special fork tool, made in
your workshop (fig. 66).
Fit cylinder (introduce piston care-
fully and gently into cylinder to
prevent fracture of piston ring).
Note: The locating pin in the piston
ring groove must sit inside the ring
joint. Fit cylinder head gasket and
cylinder head. Fit 4 packing wash-
ers, then tighten the 4 nuts, M7,
with 11-mm socket wrench, working
always on diagonally opposite nuts
in turn; torque 10.6 Ib-ft. (1.5 mkg.,
see fig. 67).
Engines of type 267, 276
(without fan) and 281 have
two piston rings.
m) Mounting Chain Sprocket
Fit the sprocket and secure with
washer and hexagon nut; use the
chain assembly tool to hold as-
sembly firmly in place. Secure nut
with tab washer (fig. 68).
n) Measuring Main Drive Shaft Position
Fit the clutch hub, cover plate and
clutch nut. With a wooden spatula
or other tool, shift the cover plate
to the top position, then with the
depth gauge inserted through the
marking bore measure distance to
the clutch gear — it should be 22.5
mm (fig. 69).
27
Fig. 66
Fig. 67
Fig. 68
Fig. 69