Johnson Service Bulletin SB-748 - Universal Flywheel Puller and Adapter Kit

November 11, 1959. Johnson introduced universal flywheel puller #378103 to replace discontinued #675025, along with adapter kit #378104 for V4 lower crankshaft bearings and 75 HP gearcase heads.

Original Johnson Motors blue service bulletin letterhead
November 11, 1959
Bulletin No. SB-748
SUBJECT: UNIVERSAL FLYWHEEL PULLER AND ADAPTER KIT
Now available from the factory - a new universal flywheel puller part number 378103. This new puller takes the place of universal flywheel puller part number 675025 recently discontinued.
The new universal flywheel puller is of extremely rigid construction, comprised of a cast iron body, and hardened steel die screws. It is adaptable for use on all Johnson engines. Figure #3 illustrates its use in the removal of the 75 H.P. flywheel.
A breakdown of the component parts of the new flywheel puller is shown in figure #1. Figure #2 illustrates a breakdown of the component parts of the adapter kit part number 378104.
Adapter kit #378104, when used in conjunction with the 378103 Flywheel puller, will do the job of pulling the lower crankshaft bearing of the V4 series engines (Figure #4), and will easily remove the gearcase head of the 75 H.P. engine (Figure #5).
Order direct from the factory (Johnson Motors) using enclosed order form.
378103 Universal Flywheel Puller $9.50 net each 378104 Adapter Kit $7.75 net each
(See reverse side for illustrations)
(over)
Original second page showing all five puller and adapter kit illustrations, captions, and Jack Penland signature