tecumseh lauson power products AH-47 thread

KB2ROCKET

Active Member
#1
I just obtained one and would like to learn more and share what I know so far .
yes I have been using the search but I was hoping to share and learn more
 
Last edited:

markus

Well-Known Member
#2
don't know much about them but I would say try to find a scan of the part numbers/breakdown for it. I found some on some karting archives that somebody on here was good enough to link me to awhile back which was a big help with my AH61's I dont know if any of the 47 stuff is one there. then you take those numbers and spend the evening typing in each number on google and ebay and hope you find them in someones old stock or some recent buyout!

My kart that had the vert shaft PP on it ran a little lean and leaked out the lower seal, I would imagine you would want to change those out if its sat for any length of time.

My niece taking the PP powered '59 speed mobile out for spin....whoever came up with name SPEED mobile should be slapped :laugh:

https://www.youtube.com/watch?v=ODYW4e1O710
 

KB2ROCKET

Active Member
#3
That's cool that one is from the 50's mine has the cast blower cover from the 60's the engine on mine has a tag with the following numbers
T-626-31
3370784
I wonder how much HP these engines make I'm guessing from 2 to 3 hp
also what ratio do you mix the gas and oil?
 
#4
That's cool that one is from the 50's mine has the cast blower cover from the 60's the engine on mine has a tag with the following numbers
T-626-31
3370784
I wonder how much HP these engines make I'm guessing from 2 to 3 hp
also what ratio do you mix the gas and oil?
The AH-47 was rated at 4HP :thumbsup:

My 1946 Power Products Model 1000 is rated at 2HP :eek:

Your AH-47 uses 1/2 pint of #30 oil to each gallon of gas (according the original label, a nice copy is available from this guy on Ebay).

That is 16:1 oil/gas and is what most 2-strokes from the late 1940's ran. That's a fat mixture! My current Stihl and Husqvarna yard tools run 50:1

Other specs in my AH-47 collection:

Displacement 4.7 cubic inches or 77 cc's

Bore 2.00 inches

Stroke 1.50 inches

Cast iron bore, aluminum block.

Many had a Tillotson diaphragm carburetor. Some had a diaphragm carburetor later known as a "Tecumseh" carburetor.

Most had a Fairbanks-Morse magneto. Some had another brand of magneto that came to be known as a "Tecumseh" magneto later on after Power Products was sold. The magneto/ignition coil, points, and condenser for these is different than the Fairbanks/Morse.

Points gap for either magneto is .015"

Ignition timing for general use, set points to just begin opening .090" BTDC as measured through the spark plug hole to top of piston. In other words just slightly advanced. I have it marked on a degree wheel somewhere, its not many degrees.

Champion J8J spark plug, gapped .030"

Jon
 
Top