Dismantling - Partner K 650/700 Active Workshop Manual

5
The cylinder and piston are two of the components
which are exposed to the greatest tensions in the
engine. They must, for example, withstand high
revs, large heat variations, and high pressure. They
must also be resistant to wear . Despite these severe
working conditions it is relatively unusual for
serious piston and cylinder malfunctions to occur
A contributory factor to this is the new lining mate-
rials in the cylinder bore, new types of lubricating
oils, and refined technology during manufacturing.
48
Cylinder and piston
During service work on these components clean-
liness is of extreme importance. It is therefore
recommended that the cylinder and the area aro-
und it are well cleaned before it is dismantled from
the crankcase.
.

Dismantling

General
The dismantling work is basically the same for all models. In the event that the work
methodology differs for any particular model this is reported separately.
Dismantle the following:
Cylinder cover, carburettor cover, starter unit, plug, air filter, carburettor, inlet manifold,
muffler with heat shield, and on certain models also heat cover, ignition module,
flywheel and Active nozzle.
See respective sections in the Workshop Manual for detailed instructions.
Mod. 650, 700
Dismantle the decompression valve.
Dismantle the cylinder.
505 38 13-08
Dismantle the piston from the connecting
rod.
505 38 17-05
Mod. 650, 700
Dismantle the decompression valve
before the cylinder screws are unscrewed.
Unscrew the cylinder screws and lift the
cylinder straight up.
NOTE!
Place a cloth in the crankcase opening to
prevent dirt from dropping down in the
crankcase when the cylinder is lifted off.
Dismantle the piston from the connecting
rod.
Remove the circlip by means of a pair of
flat pliers.
Press the gudgeon pin out, using drift No.
505 38 17-05.