Johnson Service Bulletin SB-721 - Service Bulletin Index

June 3, 1959. Original Johnson factory index of active service bulletins, organized by horsepower and engine model. The following is a searchable transcription of the factory index, not a complete record of every bulletin issued.

Bulletin numbers and special-tool part numbers link to existing archive pages where available. Unlinked numbers remain searchable historical references.

See also: SB-721 Revised (February 1961).

Archive note: The supplied eight-page scan includes the cover and indexes for 3, 5½, 7½, 10, 15/18, and 25/30/35 HP engines. The miscellaneous and other horsepower indexes mentioned on the cover are not present in this scan.

Johnson Motors Service Bulletin blue factory letterhead
June 3, 1959SERVICE BULLETIN NO. SB-721

SUBJECT: A SERVICE BULLETIN INDEX

With this bulletin are index sheets covering all active Service Bulletins.

There is an index listing miscellaneous bulletins and an index covering each horsepower classification 3 through 50.

In preparation for use of the Service Bulletin Index, place all of your Service Bulletins in numerical order.

To locate a specific bulletin, refer to the index under the proper horsepower or miscellaneous. Locate the bulletin by description given. Note the bulletin number and refer to your numerical file.

NOTE: This index will be brought up to date semi-annually. To keep your index up to date between the semi-annual index issues, post all new bulletins as they are received in the space provided on the specified index.

JOHNSON MOTORS
Jack Penland
Service Department

JP:eb

3 HP Model JW

BulletinFactory subjectIssued
SB-556Propeller Installation - Model JW10/24/56
SB-558 (Revised)Timing Fixtures #3769692/15/57

5½ HP Model CD

BulletinFactory subjectIssued
SB-521Carburetor - Filter Nut4/24/56
SB-544Swivel Bracket Grease Fittings6/21/56
SB-545The Weed and Line Cutter10/23/56
SB-550Propeller Installation Model CD10/24/56
SB-557Over Heating10/25/56
SB-558 (Revised)Timing Fixtures #3769692/15/57
SB-573Screen Gearcase12/1/56

7½ HP Model AD

BulletinFactory subjectIssued
SB-544Swivel bracket grease fitting5/21/56
SB-549Propeller installation Model AD-1010/24/56
SB-558 (Revised)Timing Fixtures #3769692/15/57
SB-573Screen - Gearcase12/1/56

10 HP Model QD

BulletinFactory subjectIssued
SB-521Carburetor Filter Nut4/24/56
SB-544Swivel bracket grease fittings5/21/56
SB-545The Weed and Line Cutter10/23/56
SB-548Propeller installation QD-10 thru 182/8/57
SB-558 (Revised)Timing fixtures #3769692/15/57
SB-573Screen Gearcase12/1/56
SB-588Baffle Installation Model QD5/10/57
SB-606Stop Switch11/22/57
SB-613Propeller nut change 1958 Models1/13/58
SB-623Shift Lever Assembly QD-162/28/58
SB-634Test Wheel - QD-19 & 203/21/58
SB-687A new Wrench - Model QD-201/7/59
SB-70127-148 Connecting Rod needle Bearings QD Series Motors3/16/59

15 and 18 HP Model FD Series

BulletinFactory subjectIssued
SB-544Swivel Bracket grease fittings5/21/56
SB-545The Weed and Line Cutter10/23/56
SB-547Propeller Installation Model FD10/23/56
SB-558 (Revised)Timing Fixtures #3769692/15/57
SB-573Screen Gearcase12/1/56
SB-588Baffle Installation Model FD5/10/57
SB-590Tool 377067 Removing Oil Seal top journal6/4/57
SB-591Tool 304722 Installing Oil seal top journal6/4/57
SB-595Tool #377067 for Removing Oil seal upper Crankshaft FD8/1/57
SB-596Installation junction box8/1/57
SB-606Stop switch11/22/57
SB-610Emergency Starting1/15/58
SB-613Propeller Nut change - 1958 Models1/13/58
SB-683Medallion - 18 HP Electric Starting Kits11/20/58

25, 30 and 35 HP Model RD Series

BulletinFactory subjectIssued
SB-521Carburetor Filter Nut4/24/56
SB-531Piston 375781 RD-10 thru 17 and 376794 RD-184/10/56
SB-544Swivel bracket Grease fitting5/21/56
SB-545The Weed and Line Cutter10/23/56
SB-546Important Propeller Installation10/23/56
SB-552Generator Kit (377008) for models RDE and RJE (1957 35 HP Electric Starting)9/19/56
SB-555Throttle Control Rod collar and screw assm.10/24/56
SB-558 (Revised)Timing Fixtures #3769692/15/57
SB-561Driveshaft Model RD Series6/13/58
SB-564Exhaust, Baffle plate removal RD’s11/15/56
SB-567Junction Box Installation 35 HP Motors11/20/56
SB-568Compression Release RD-RDE-191/8/57
SB-569Compression Release valve Model RD-191/8/57
SB-570Spring #302733 For Cutout Assm. #376442; #304499 for #376646; #37691911/23/56
SB-571The Mercury Switch Installation12/3/56
SB-573Screen Gearcase12/1/56
SB-580Flywheel and Ring Gear 35 HP RDE,RJE-191/3/57
SB-589Replacing Starter Cord RD-19 Series5/13/59
SB-590Tool 377067 Removing Oil Seal Top bearing6/4/57
SB-591Tool 304722 Installing Oil seal top bearing6/4/57
SB-595Tool 377067 for Removing Oil seal Upper Crankshaft FD and RD8/1/57
SB-597Shutter adjustment Carburetor RDE, RJE 19M only10/28/57
SB-60471-1331 nut Crankshaft11/14/57
SB-605Generator 1958 Motors11/25/57
SB-606Stop Switch11/22/57
SB-610Emergency Starting1/15/58
SB-612Propeller Nut change 1958 Models1/13/58
SB-617Shift Rod Assembly replacement2/15/58
SB-620RDS-20 377358 Adapter kit assm. Remote Controls2/10/58
SB-621Shifter Dog wear2/10/58
SB-622RD-10 thru 15 376220 Shift lever, Shaft and Clip Assembly2/28/58
SB-623Shift Lever Assembly (RD 15A-thru 17 RDE-16 thru 17) 3775672/28/58
SB-624Shift Lever Assm. (RD-17C-17S) 3765642/25/58
SB-625Carburetor 306027 Nylon washer. Slow speed needle2/12/58

25, 30 and 35 HP Model RD Series - continued

BulletinFactory subjectIssued
SB-633Accessory Steering Handles3/21/58
SB-635Water Tube Assembly RD-19 Series3/21/58
SB-636Service Tools3/21/58
SB-640Display Stand conversion4/4/58
SB-641Tool for Installing 305670 fasteners4/4/58
SB-6531958 Accessory Propellers 35 HP Motors5/14/58
SB-654RDS Connecting Rod Roller Bearing Retainers6/15/58
SB-658Replacing Cylinder Head Gasket 35 HP Model6/15/58
SB-659Cylinder Head Gasket Part No. 305206 RDS-206/13/58
SB-677305389 Gasket Powerhead to Exhaust housing10/7/58
SB-690Gasket Powerhead to Exhaust Housing RDS-20 thru 21B1/29/59
SB-699Spark Plug Door 1959 Motors3/11/59
SB-712Servicing the RD-RDS-21 and RD-RDS-21B Powerhead4/22/59

Historical note: Entries reflect the 1959 factory index. A bulletin may subsequently have been revised, superseded or withdrawn. Links are provided only for known archive entries.

Read the revised SB-721 index

Related service bulletins