Propeller Pitch Block

PART NO. 376951

Factory application

Models QD, RDE, and RJE-19; RD, RDE-19C; RDS-20, 21; RD-21

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 bulletin

SB-875 (October 24, 1961): fixture for 35 and 40 HP propeller #277617; grind a 1/2-inch radius. The factory retained the fixture part number.

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