Propeller Pitch Block

PART NO. 377539

Factory application

Models RD, RDE, RDS; optional propeller No. 377410, 10 3/8 x 11 1/2

Example of a Johnson propeller pitch straightening block
Representative propeller pitch block shown (376108). Actual tool may differ.

Factory reference: Johnson Service Promotion Bulletin SPB #255 - Propeller Pitch Blocks.

Factory service reference: SB-932 recommends a No. 3 rawhide hammer when working with propeller straightening fixtures.