Holley Replacement Main Body for 0-4412S 935172 This can then be loosened Size:12 Wide STIAA0114AF2640101 Resist Carbon Tracking 5846-001

This can then be loosened while on the crank snout so that you can turn the degree wheel independent of the engine

The pressure on the head from the earmuffs can be adjusted by changing the special foam rubber pads (supplied) positioned between the earmuff and the helmet

TROUBLE FREE INSTALLATION

Ford Truck 1980-97

Holley Replacement Main Body for 0 4412S 935172 This can then be loosened Size:12 Wide STIAA0114AF2640101 Resist Carbon Tracking 5846 001 This can then be loosened while on the crank snout so that you can turn the degree wheel independent of the engine The pressure on the head from the earmuffs can be adjusted by changing the special foam rubber pads (supplied) positioned between the earmuff and the helmet