[FC Zach]

A two-stroke engine is a completely different animal, in your case you will need to do immediate service(s) after rebuild.

Upon initial start up allow the engine to reach a normal operating temp. then drain and replace oil and filter. This is important because of all the assembly lubes, sealants, and whatever else that is washed away within the motor.

After the first oil change is done I guess you could just simply change it at 500kms and once more at 1000kms. If you had a bearing failure prior to the rebuild then I would change the oil before 500km. I say that because no matter how well you think you flushed your oil cooler there always seems to be a lot of debris still within the cooler, I disassembled a few filters and seen first hand.

Other than that just take it easy on it and keep the RPMs varying, reason why I drove mine mostly around town during the first few hundred miles.