Sachs SA 340 - Page 10

Fig. 6
Use only genuine SACHS spares.
8
Cylinder head, cylinder and
piston
Fig. 6
Unscrew cylinder head and cy-
linder.
On SACHS SA 340 SS, remove
cylinder head gasket.
Pull off cylinder without twisting.
(
Dang er of breaking piston
rings .)
Remove
cylinder flange gaske t.
Note:
The cylinder can be rebored
twice. Use appropriate piston
(see Spare Parts List).
A
cylinder wit h chromium -pla ted
piston bearing surface cannot
be rebored.
Place cylinder on hom e- made
s lott ed wooden board (1 ).
Cov er the crankcase, take out
the two wire circlips. If neces-
sar y, force out gudgeon pin with
gudgeon pin extractor (3, repair
tool no. 1} and insert (2, repair
tool no. 2) .
When fitting the steel band, care
should be taken to ensure that
the piston rings are in their groo -
ves . (Danger of breaking piston
rings.)
Remove
slotted wood en board.
Crankcase and crankshaft
Fig. 7
Unscrew 6 hexagon socket head
screws from crankcase.
Unscrew h exago n hea d bolt {4,
Fig. 3) and sp lit crankcase by
t apping the crankcase ha lf pow -
er takeoff side s li ghtly with a
rubber hammer.
Remove crankcase half power
tak eoff side and gasket. Take
care of dowel tubes.
Unscrew screwed nippl e {1} and
oil drain cock (2).
Uns crew crankcase half magneto
side from the as se mbly jig and
he at it to 1 00 ... 150 ° C (212 ... 302 °
F) for removing the crankshaft
(grooved ball bearing) .
Clean all parts thoroughly, check
for wear and r ep lace when ne -
cessary.