Hi Behzad.
CD 70 is easy to break in just like any other bike. The only trouble will be that you dont have the RPM meter. So you would just have to keep an eye on the speed in each gear. Go something like this;
First 200 Kilometers
in 1st gear dont go above 5 to 7km/hr
2nd gear max speed 20km/hr
3rd gear, max speed 30km/hr
4th gear max speed 40km/hr
201km to 400km (Change engine oil at 300kms)
1st gear max speed 10km/hr
2nd gear max speed 30km/hr
3rd gear, max speed 40km/hr
4th gear max speed 50km/hr
401km to 600km
1st gear max speed 10km/hr
2nd gear max speed 30km/hr
3rd gear, max speed 50km/hr
4th gear max speed 60km/hr
601km to 800km (Change engine oil at 800kms)
1st gear max speed 10km/hr
2nd gear max speed 30km/hr
3rd gear, max speed 50km/hr
4th gear max speed 70km/hr
801km to 1000km
1st gear max speed 10km/hr
2nd gear max speed 30-35km/hr
3rd gear, max speed 60-65km/hr
4th gear max speed 80+km/hr (Wont probably go beyond 80km/hr)
(Get the 1st engine tuning done at 1000kms)
Should be good to go.