JAWA ZVL 210 Service Manual - page 8

www.jawamoped.com

III   ENGINE

1.  Removing engine from frame

a)  Remove the engine guards.

b)  Detach the spark plug cable, the fuel hose, and the

throttle cable.

c)  Disconnect the leads of the electrical equipment.

d)  Disconnect the chain of the secondary transmission.

e)  Disconnect the exhaust pipe from the engine.

f)  Remove screws fastening the engine to the frame,

and lift off the engine.

Clean well the surfaces of the engine, and drain the oil

from the automatic transmission case. During engine

dismantling, clean immediately all the removed parts

and put them aside in the order of their removal, so that

they can be reassembled correctly and in the shortest

possible time.

2.  Removing cylinder head, cylinder and piston

a)  Unscrew the four M6 nuts and lift them off together

with washers from the studs.

b)  Remove the cylinder head.

c)  Remove the cylinder (Fig. 5)

d)  Remove the circlips securing the gudgeon pin and

use the drift No. 50-12000-1.1 (Fig. 6) to drive out

the gudgeon pin.

Take care not to spill the dia.. 2 x 8 mm needle rollers

of the gudgeon pin (there are altogether twenty five).

The maximum permissible ring gap of a worn piston

ring is from 0.6 mm to 0.8 mm.

Check the dimension for grading the pistons in the

individual classes 34.5 mm. From the piston base (Fig.

7)

ZVL model 210   Workshop Manual   Page 10                    

jkw