Thank you very much, NutLoose !
You gave very interesting information.
About inspections:
As there is no inspection charts (in classical meaning) in Repair Manual, we made a decision to remain original Cessna 152 tasks for propeller.
The reason is that I found Supplemental Type Certificate for Sensenich 72CKS6 installed on C152. STC SA1219EA. In this document there is no inspection limitations set. So, as I understand, Cessna AMM original inspection list can be used.
About Manuals: see private message.