Vortex ROK DVS JUNIOR, Руководство пользователя

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4.11. Cylinder
Every 30 hours cylinder must be
honed. In order to perform this job, we highly recommend
taking the engine off the chassis. However, you may do
the job even with the engine mounted.
1. Take away the muffler from the engine by removing the
springs fixing it to the exhaust manifold.
2. Unscrew and remove the spark plug (16).
3. Unscrew and remove the 6 nuts on top of head (19)
and the 6 washers (20).
4. Remove the head by pulling it up carefully.
5. Unscrew the 4 nuts on top of head.
6. Remove the cylinder with one hand by pulling it up. To
avoid contact with the crankcase, use the other hand to
hold the connecting rod.
Whenever you disassemble the cylinder, we recommend
replacing the cylinder gasket
(27).
ASSEMBLING
Check the tolerance between piston and cylinder. Wrong
tolerance may cause serious damage.
6.
Place a new gasket (27) into the four studbolts.
7. Insert cylinder into the four studs carefully and tighten
the nuts paying attention to the tightening torque.
8. Check the rubber o-ring (22 – 23 - 24) and eventually
re-place them with new ones.
9. Re-place the cylinder head carefully in the six studbolts
(26).
10. Insert brass washers (20) and manually screw the nuts
(19).
11. Tighten cylinder head with the proper tool and
torque.
12. Place a new ex gasket (28) loctite 4 bolts,
torque - 12Nm.
Important: After honing the cylinder and eventually
changing the piston, the engine must go through another
break-in period.
See "Starting and Break-in".
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