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Wisconsin Engines

Lauson TLH on "Rotohoe 300H"


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  #1  
Old 08-21-2006, 09:54:51 AM
olcowhand olcowhand is offline
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Default Lauson TLH on "Rotohoe 300H"

Hello, I'm new to smokstak. Just got an old self propelled Rotohoe model 300H, serial # 4095 with a Lauson TLH737WT engine, serial #6005405. Wondering the year of manufacture for either tiller or engine. Has good compression, so if I can find some ignition points, I'm sure she'll run. Just has the coil & the plate it mounts on, no points at all. Not sure if the points mount to another plate or directly to main plate. Looks like there would be another small plate for the points, by the spacing of mounting holes on the main plate. Aim to restore this unit when time allows. It's been implied this may be for lawn reconditioning rather than garden tilling. I've never seen one, so have no idea. It has straight blades about 1 1/4" apart, staggered around shaft. Seems more for garden to me. Anyone out there with any info? Thanks in advance.
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Old 08-21-2006, 01:17:15 PM
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John Newman, Jr. John Newman, Jr. is offline
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Default Re: Lauson TLH on "Rotohoe 300H"

I believe your engine is a 1956. The attached picture shows both types of magnetos used on the TLH - Wico & Eisemann. The Lauson part numbers for the complete breaker point set are as follow: Wico - 26024. Eisemann - 22645. The Eisemann pic is not as good, but the component layout on both is almost identical. Usually, the points used in your engine would have been used in others as well, since these mags were used on a lot of different engines. From what I can see, the breaker points assy should bolt directly to the coil plate. Is your points cam on the crankshaft? Should be a ring with a keyway inside that slips on the crank and will have a flat spot on the outside to close & open the points.
Good luck,
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Old 08-21-2006, 03:38:38 PM
olcowhand olcowhand is offline
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Default Re: Lauson TLH on "Rotohoe 300H"

Mine has the Wico, as there is FW2270 stamped on the mag plate. Are these points still available, & if so, where to get them? Thanks so much for your help.
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Old 08-21-2006, 05:06:10 PM
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Ray Cardoza Ray Cardoza is offline
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Default Re: Lauson TLH on "Rotohoe 300H"

points might not need replacement just cleaning and realignment. I had a fbm mag with puny spark cleaned the points and realigned gave it a spin and got a nice surprise!
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Old 08-21-2006, 06:19:25 PM
olcowhand olcowhand is offline
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Default Re: Lauson TLH on "Rotohoe 300H"

Quote:
Originally Posted by Ray Cardoza
points might not need replacement just cleaning and realignment. I had a fbm mag with puny spark cleaned the points and realigned gave it a spin and got a nice surprise!
That's just it, there were NO points in it. Someone had taken them out. I've even taken points from different makes, altered them & made them work, but getting the timing just right would be difficult without something to go by.
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Old 08-21-2006, 08:29:33 PM
BWegher BWegher is offline
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Default Re: Lauson TLH on "Rotohoe 300H"

My 1961 Wico manual shows model FW-2270 part numbers and diagram.
Here are the Wico numbers
contact set X8608
condenser X8959
Stator plate unit X8762
Stator plate Assembly X8664
Coil X8959

The diagram looks like the standard magneto used on the Tecumseh V50, V60 etc with cast iron flywheel.
Go to your local Tecumseh service place and they will likely be able to cross reference to modern Tecumseh numbers. You should have no trouble getting the parts
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Old 08-21-2006, 08:35:05 PM
olcowhand olcowhand is offline
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Default Re: Lauson TLH on "Rotohoe 300H"

Thanks, I knew they looked like modern Tec units, but wasn't sure. I have an old 10hp vertical Tec engine laying here, maybe the points will interchange. If not, I'll go to dealer asap.
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Old 08-22-2006, 07:43:04 AM
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Default Re: Lauson TLH on "Rotohoe 300H"

Howdy Dan
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Old 08-22-2006, 09:21:53 AM
olcowhand olcowhand is offline
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Default Re: Lauson TLH on "Rotohoe 300H"

Quote:
Originally Posted by JoeJ
Howdy Dan
You sure do get around Joe! Great site here for sure. Gonna try to get to salvage yard today to pick up an old 8hp Wisconsin like on my Spinaway mower. It has a cracked piston & bad valve, so hoping the one at yard will have what I need. Figure I can also find a Tec engine with the points I need for this Lauson.
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Old 08-26-2006, 09:32:58 PM
olcowhand olcowhand is offline
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Default Re: Lauson TLH on "Rotohoe 300H"

Found that Wisconsin at scrapyard. Identical to engine on the "Spinaway" mower. Not stuck & has compression, so may just use this engine on mower. Also found an old BF Onan 16hp twin. About a 1970 model. Looked rough, but got it running in about an hour & a half. Warm, she has just a tad of smoke at decelleration, but none on throttling up. No knocks either. Got both engines for $27 total going by weight.
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