Fixture - Propeller Torque

FIXTURE - PROPELLER TORQUE
PART NO. 378448

For all 9.5 thru 90 HP engines (except with Thru-Hub exhausts)
This fixture eliminates the guesswork in determining when a propeller's hub is slipping at a lower torque than specified. A real aid in convincing your customer that he needs a new propeller.

Refer to service bulletins for proper propeller hub torque.

NOTE: An adapter can be made to increase the leverage of a standard torque
wrench to the required values.

Includes following components which are available separately:

Part No.
308107 Stop
308108 Bolt
308109 Pin - 50 HP
308110 Pin - 28 thru 90 HP
308112 Torque Shaft - 50 HP
308113 Torque Shaft - 28 thru 40 HP
308114 Torque Shaft - 60 thru 90 HP
378455 Torque Shaft - 10 to 1959. All 15 thru 25 HP
379238 Torque Shaft - 10 HP 1959 thru 1969. all 9-1/2 HP

Factory service bulletin

Johnson Service Bulletin SB-880 - Propeller Torque Fixture Assembly (December 13, 1961) explains the fixture, its use for detecting propeller hub slippage, and the individual component part numbers.

For factory propeller hub slippage torque specifications, see Johnson Service Bulletin SB-881 - Propeller Specifications (December 13, 1961).