Johnson Pinion Bearing Puller - 378445
Johnson special puller assembly 378445 was introduced for removing pinion bearings from 40, 50 and 75 HP outboard gearcases. The factory listed interchangeable puller jaws for these engine groups.
Factory service bulletins
Replacement jaws
Factory specifications are taken from SB-839 and SB-840, both dated April 28, 1961.
Clarification in SB-894 Supplement
SB-894 Supplement identifies 378445 as an incorrect number printed on the original SB-894 order form. The correct bearing race puller for that bulletin is 378450. Tool 378445 remains the separate pinion bearing puller documented in SB-839 and SB-840.