Tecumseh / Lauson Outboard Manuals
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Boat Motor Owner Operation, Workshop Service, Repair and Parts Manuals Directory
Tecumseh Lauson Outboard Model Identification
Lauson Outboard Model and Year Guide: 1940-1956
On some older models I believe the ID was stamped on the transom bracket somewhere. See Table Below for Yearly Models
Starting
in 1948 Lauson single and twin cylinder 4-stroke outboards have a model
I.D. tag below the power head attached to the transom clamp right at
the top of the transom saddle. Lawson outboard serial numbers break
down roughly as shown in the groupings list as shown in the table here
| Single Cylinder | Twin Cylinder |
|---|---|
| S-300 = 1948-9 S-350 = 1950 S-351 = 1951 S-352 = 1952 S-353 = 1954 to 1956 |
T-600 = 1948-9 T-6 50 = 1950 T-651 = 1951 T-652 = 1952 T-653 = 1954 to 1956 |
About: Tecumseh / Lauson Outboards
Lauson outboards were manufactured by the Hart Carter Corporation in New Holstein Wisconsin (engines and farm machinery manufacturer) from the 1940's through the mid 1950's. Hart Carter sold to Tecumseh Power Products Company in the mid 1950's.
In
1956 Tecumseh entered the small engine market acquiring Lauson and in
1957, acquired the Power Products Company – maker of 2 cycle engines.
Tecumseh engines were used on many outboard brands over the years including; Lauson, Sears Gamefisher & Ted Williams, Eska which also produced private brands for auto, hardware and department store chains.
Lauson outboards were billed as the "Cadillac" of outboards for fisherman and sported a number of innovative features, the most unique being that all of their outboards utilized 4-cycle engines.
The advantages of 4-cycle engines are high fuel economy and excellent slow speed operation compared to 2-strokes.
Lauson begins producing 4-Stroke Outboard Boat Motors
In
the early 1940's and just after WWII Lauson produced the OB-410 a small
single cylinder 2.5hp outboard. All Lauson 300 and 600 series motors
were 4-stroke, and generally had Wico magneto Ignition and Tillotson
Carburetors
These engines are designed to be air cooled by fan blades on the flywheel directing air over the cooling fins on the cylinder. To properly cool, the lower engine covers must be in place for proper air flow or the engine will overheat overheat the coils and cause them to fail, evidence of melted coil insulation is often cited.
The On/Off knob on the front of the engine kills the spark and closes the crankcase breather so the engine can be transported without losing oil.
Tecumseh Outboard Resources
- Tecumseh Outboard Parts - on ebay
- oddjobmotors.net/lauson.htm
- everythingaboutboats.org/tecumseh/
- discount-marine-parts.com/lauson
Lauson Outboard Boat Motor Manual Directory
Manual Selection Guide
Lauson Service and Repair Manuals
Year = Published | HP = Horsepower | Models | Publication # | Price | Manual ID
Lauson Repairs and Maintenance Service Manuals
Lauson 1940-1956 Outboard Service Manuals
- smpl = service manual and parts list
- N/A = not available, we are interested in acquiring a copy, got one? Contact Us
Service Repair Sorted by Model Year
| Year | Model | HP | Cyl | $ USD | Service Manual | Brand |
|---|---|---|---|---|---|---|
| 19?? | Sport King | Lauson | ||||
| All |
Lauson Owners Operating Instructions Manuals & Parts Lists
Lauson 1940-1956 Outboard Owners Manuals / Parts Lists
- ompl = owner operating instructions manual and parts list
- N/A = not available, we are interested in acquiring a copy, got one? Contact Us
Owner Operation and Parts Manuals Sorted by Model Number
| Year | Model | HP | Cyl | $ USD | Owner & Parts | Brand/Name |
|---|---|---|---|---|---|---|
| 1940 | OB-410 | 2.5 | 1 | Sport King | ||
| 1941 | 2.25 | 1 | ||||
| S410 | 4 | 1 | ||||
| 1942 | ||||||
| 1943 | ||||||
| 1944 | ||||||
| 1945 | ||||||
| 1946 | ||||||
| OB-410 | 2.5 | 1 | Sport King | |||
| 1947 | OB-410 | 2.5 | 1 | Sport King | ||
| 1948 | Sport King | 3 | 1 | Single | ||
| Sport King | 6 | 2 | OpposedTwin | |||
| 1949 | S300 | 3 | 1 | |||
| T600 | 6 | 2 | ||||
| 1950 | S350 | 3 | 1 | $5.98 |
lauson-s350s351oipc |
|
| T650 | 6 | 2 | ||||
| 1951 | T651 | 6 | 2 | |||
| T651R | 6 | 2 | Gear Shift | |||
| 1952 | S351 | 3 | 1 | $5.98 |
lauson-s350s351oipc |
|
| T651 | 6 | 2 | ||||
| T651R | 6 | 2 | Gear Shift | |||
| 1953 | S353 | 3 | 1 | |||
| T653 | 6 | 2 | ||||
| T653R | 6 | 2 | Gear Shift | |||
| 1954 | S353 | 3 | 1 | |||
| T653 | 6 | 2 | ||||
| T653R | 6 | 2 | Gear Shift | |||
| 1955 | S353 | 3 | 1 | |||
| T653 | 6 | 2 | ||||
| T653N | 6 | 2 | Neutral Gear | |||
| T653R | 6 | 2 | Gear Shift | |||
| 1956 | S353 | 3 | 1 | |||
| T653 | 6 | 2 | ||||
| T653N | 6 | 2 | Neutral Gear |
