Johnson Service Bulletin SB-912 Rev. 4 - Gearcase Capacities

Issued December 1966, this revision lists gearcase lubricant capacities for Johnson outboards from 1949 through 1967. The original numerical table is retained as a high-resolution factory reproduction to protect model and capacity accuracy.

Johnson Motors gray Service Bulletin letterhead
December, 1966
SB-#912 Rev. 4
SUBJECT: GEARCASE CAPACITIES: 1949 THRU 1967 ENGINES.
Following are the gearcase capacities for engines from 1949 thru 1967.
OMC Type "C" Lubricant is specified for all of the below listed models. On models earlier than 1962 where type "B" was previously specified and is still being used, type "C" may be added to the "B" without ad- verse effects. DO NOT, HOWEVER, USE TYPE "B" IN THE ELECTRAMATIC GEARCASE UNDER ANY CIRCUMSTANCES.
*Gearcases with fill plug above cavitation plate - 37.2 ounces
Factory chart of horsepower, model series, year and gearcase capacity in ounces for 1949 through 1967 engines
PAGE 2
SERVICE BULLETIN SB-#912 Rev. 4
JOHNSON MOTORS, DIVISION OF OUTBOARD MARINE CORPORATION, WAUKEGAN, ILLINOIS 60085
OMC TYPE "C" Lubricant is available from your Parts Distributor packaged as follows:
378795 Carton of twelve - 8 oz. tubes $12.00/Ctn. List Price 378794 One gallon can (6 cans per carton) $ 3.60/gal. List Price 380384 Five gallon can $ 9.00/5 gal. Dealer Net Price
JOHNSON MOTORS
Carl Klawonn Administrative Assistant
NOTE: This bulletin is already posted on the Miscellaneous Index under heading "Engine Miscellaneous". Destroy Bulletin No. SB-912 Rev. 3 dated October, 1965.
CK:rs

Lubricant and parts reference

The bulletin specifies OMC Type C lubricant and cautions against using Type B in Electramatic gearcases. Listed packages include part numbers 378795 (twelve 8-ounce tubes), 378794 (one-gallon can), and 380384 (five-gallon can). This revision supersedes SB-912 Rev. 3 from October 1965.

Related factory references