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post #1 of 16 Old 03-07-2019, 02:12 PM Thread Starter
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Attn: All Tecumseh Snow King gurus....

Greetings fellow snowblower enthusiasts!


I'm looking to replace the engine on my ancient and honorable Noma 9/27 which has a perfectly good TEC 9hp, but no ability to re-attach a starter motor which is pretty much a must in really cold weather. (the area of the block where the motor attached is just too damaged for re-tapping, or helicoil solutions).

My thought was to keep checking C/L for a pulled engine, or a damaged blower that still had a good engine and working starter, that could just be swapped.

So, for all the TEC Snow King flathead engine gurus here's a few questions:

1) Is it true that the 8hp, 9hp, and 10hp versions of these engines were really identical engines, just running at different speeds?

2) To my limited knowledge, I have observed that there are two basic arrangements for shafts:
a) models with a single shaft
b) models with two counter rotating shafts

Were there additional shaft arrangements?

3) When you are up around this size of the Snow King, did they all have a stator, even if the blower didn't have a light? In other words, was there typically a stator wire tucked away out of sight on machines with no headlight?

4) For the 8,9,10hp version, with a single shaft, were there different shaft diameters or lengths?

Any advice on the above questions would be greatly appreciated.
Thanks in advance!

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post #2 of 16 Old 03-07-2019, 03:49 PM
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some Tecumseh engine specs here: https://www.smallenginesuppliers.com...ine-specs.html

also, it looks like HMSK80 and HMSK90 are same cylinder, HMSK100 is bigger. https://www.smallenginesuppliers.com...nformation.pdf

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post #3 of 16 Old 03-07-2019, 03:56 PM
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Tecs always ran 3600 RPM - the comment about 8,9, and 10HP being the same but different speeds it false. As far as a stator, I suspectit depends on who bought it as to whether they put one on or not.

Also, most folks have no issue starting these by hand in any temp . . . . might there be another problem in that regard as well? And how did the block get so buggered up? It's not like starters need to come off that often . . .
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post #4 of 16 Old 03-07-2019, 04:14 PM
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I bought a used 8hp with broken starter mounts in the block and the owner fabricated a bracket from the snowblower base and bolts on the engine to hold the starter in place.

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post #5 of 16 Old 03-07-2019, 04:31 PM Thread Starter
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Quote:
Originally Posted by paulm12 View Post
some Tecumseh engine specs here: https://www.smallenginesuppliers.com...ine-specs.html

also, it looks like HMSK80 and HMSK90 are same cylinder, HMSK100 is bigger. https://www.smallenginesuppliers.com...nformation.pdf

.



Thanks! That's good information to bookmark. It even shows the dimensions of the shafts, which is helpful.
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post #6 of 16 Old 03-07-2019, 04:54 PM Thread Starter
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Quote:
Originally Posted by tadawson View Post
Tecs always ran 3600 RPM - the comment about 8,9, and 10HP being the same but different speeds it false. As far as a stator, I suspectit depends on who bought it as to whether they put one on or not.

Also, most folks have no issue starting these by hand in any temp . . . . might there be another problem in that regard as well? And how did the block get so buggered up? It's not like starters need to come off that often . . .

I can usually get it to start by hand, no matter what the temperature. But the coldest times I have tried to start it, you can exhaust yourself pulling on it. This old beast still has a lot of compression. So this is really a matter of convenience. The starter is certainly nice to have.

As to how it got damaged. Well....it started with the trained apes at the big box store where I bought it, all those years ago. They were offering free assembly at the time, and basically charged what it was worth. It was 25 plus years ago and I didn't know enough at the time, not to trust anything they did. They screwed up some other things as well.

Not too long after I bought the machine, the starter came loose and attempts to tighten it were successful but it eventually came loose again and stripped the drive gear. I went a few years without it. Then I replaced the drive gear and remounted the starter,even though the threads in the block were also damaged. It worked for a season or two, then came off again, and long story short, there's just not enough meat there to fix it.

This is not that unusual a problem for these old TECs though. There have been a few threads on the forum with folks with the same problem. The bolts are very short, and the block is very soft. Not the greatest design IMHO.

Basically, if I can find a replacement and the starter mounting threads are still good, I'll snug them up with lock washers and "hard core" Loctite, and then they should stay put.

Interesting about the 8,9, 10 hp. I have heard that many times before about them all being the same. It certainly seemed reasonable, since Briggs did that with the R-Tek engine. Rated horsepower was a function of normal run speed.
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post #7 of 16 Old 03-07-2019, 05:07 PM Thread Starter
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Quote:
Originally Posted by JLawrence08648 View Post
I bought a used 8hp with broken starter mounts in the block and the owner fabricated a bracket from the snowblower base and bolts on the engine to hold the starter in place.

You know JL, I was thinking the very same thing, but I suspect it would take a bunch of experimentation and adjustments/changes to get it just right. Accordingly, I was looking for more of a "quick fix", because I have more projects lined up already, that I could complete for the rest of my lifetime....even if I live to be 150...


I've often wondered if anyone ever fabbed up a "portable" starter the would work on these old TECs, since there were so many of them around. You know, something that could slide in, guided by brackets or the like, and crank that sucker over, in much the same way they do with IndyCars......


Alas.....I don't have the time to come up with that either!
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post #8 of 16 Old 03-07-2019, 05:13 PM
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A sniff of ether and one pull.....who needs a starter?
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post #9 of 16 Old 03-07-2019, 05:31 PM Thread Starter
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Quote:
Originally Posted by cranman View Post
A sniff of ether and one pull.....who needs a starter?



Cranman,


Yeah.....was considering that too. I was thinking about drilling a small hole in the heater box to allow for the insertion of a tube or straw into the throat of the carb might be just the ticket for really cold times, because trying to get the ether in there under that box is a PITA.
I have a lot of power equipment that I make an effort to maintain fairly well, and don't really have many problems with start ups, so I guess I've become a "purist" and shy away from using that stuff unless I'm desperate. I absolutely won't use it on my 2 cycle stuff.
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post #10 of 16 Old 03-07-2019, 07:21 PM
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What about WD40, or something similar? Something flammable but lubricatey (technical term!). I totally get the purist thing. But in special cases (really cold), maybe the engine will forgive you.

I did just get a squeeze bottle that lets you squirt out liquid, with the bottle still upright. My thought is to use it with 2-stroke gas, as a "primer" bottle. Rather than needing to use something like starting fluid, at least for testing purposes.

https://www.ebay.com/itm/250ml-500ml...72.m2749.l2649

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