Difference in S200 S620 - Snowblower Forum : Snow Blower Forums
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post #1 of 19 Old 02-08-2016, 09:40 PM Thread Starter
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Difference in S200 S620

I picked up a tired S620 in 2014 and took it apart and finally got to scrounging some parts for it. The wheels were warn out. Never seen that before. Had good compression and it is an electric start. Got most of the parts now just need a side vane. Looks like Toro only on that part. See what my dealer wants for that.
So what is the difference between S620 and the S200?? I see the handles are chrome steel, over Aluminum. The vanes are harder plastic, over softer. Any other difference??
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post #2 of 19 Old 02-08-2016, 10:03 PM
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really the only difference is a bigger engine, otherwise they are the same machine. i have had a snowmaster 20, a few s620s, and a few s200s and they all perform the same with new paddles and scraper blades. I THINK but am not sure that some very late model s620s and snnowmaster 20s had solid state ignitions
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post #3 of 19 Old 02-10-2016, 10:30 PM Thread Starter
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Thanks 43128.. So far the I found out the S200 has a AH520 motor and the S620 has the AH600 motor.. If I remember correct the 200 was about 2.5HP may be the 620 was a 3 HP?? Not sure?? See if I can come across more infomation. Thanks
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post #4 of 19 Old 02-10-2016, 10:38 PM
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Yeah - If I recall correctly they never got over 4.5 HP. But keep in mind a 2 stroke has quite a bit more cajones than a 4 stroke by about 2x...... so don't underestimate the output. Those 620's can chuck the wet heavy crap as good a a 6 HP [email protected] any day...




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Last edited by bad69cat; 02-10-2016 at 10:41 PM.
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post #5 of 19 Old 02-11-2016, 09:43 PM
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Take a look starting at page 11 in this manual (actual page number is 1-1 but it's the 11th page starting from the top)

Each model is listed and gives years of manufacture, engine specs, width etc.

http://gicl.cs.drexel.edu/images/0/0...ice_manual.pdf
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post #6 of 19 Old 02-11-2016, 10:35 PM Thread Starter
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Thanks stuart80112 That pretty much tells me alot of the single stage blowers!! I have had a lot of the S200 10 or so and still have about 5 that need repair. 2 of the 620's. I have used them to move the wet sloppy snow. In fact my drive way is low and collects water and I have used an S200 to move the water off the drive and on to the grass and it soaks away.
Another question, The max RPM in the manual 4100 or whatever it is. Is that the governed RPM?? When I get this 620 running I will have to put my tach on it and see where the RPM it is at. It will be a few days till I get at it again. Thanks Again.
I just did another search on here and bwdbrn1 Had a HP list of the Tecumseh motors
The S200 with the AH520 is 2 HP
The S620 with the AH600 is 3 HP
I guess they are about what I thought. Just the S200 seams rated low to me. I thought they were 2.5 HP
So that means I need to hook up 3 of them together to get 6 hp for a minibike!! LOL

Last edited by snowworks; 02-11-2016 at 10:57 PM.
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post #7 of 19 Old 02-11-2016, 10:53 PM
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Thanks stuart80112 That pretty much tells me alot of the single stage blowers!! I have had a lot of the S200 10 or so and still have about 5 that need repair. 2 of the 620's. I have used them to move the wet sloppy snow. In fact my drive way is low and collects water and I have used an S200 to move the water off the drive and on to the grass and it soaks away.
Another question, The max RPM in the manual 4100 or whatever it is. Is that the governed RPM?? When I get this 620 running I will have to put my tach on it and see where the RPM it is at. It will be a few days till I get at it again. Thanks Again.
I'm not sure how to interpret that MAX RPM column

You probably noticed (for example) that the various CR20 machines all have the same engine (AH600) but there are a couple of different ranges for MAX RPM. 4300-4500 and 4300-4700. That makes no sense to me.
If it's the same engine then how can they have different ranges? It looks like the earliest versions of the AH600 had the lower speed range and later years had the higher speed range.

Maybe someone will chime in and explain that for us.

In any case, if you want to be kind to the engine, adjust the engine speed to the lower end of the range. If you want to risk stressing the engine and get maximum power, adjust it to the higher end. I would lean towards staying at the lower end and see how they operate. You can always speed an engine up if you need to, but trying to slow it down after it's blown isn't an option. These are very old engines and past their prime... so I would err on the side of caution.
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post #8 of 19 Old 02-12-2016, 08:33 AM
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The good news is they are still plentiful though! I don't keep many on hand now since they don't sell very well. To bad though - they are handy little guys to keep as a back up or one to throw in the back of the truck




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post #9 of 19 Old 02-22-2016, 08:41 PM Thread Starter
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Max RPM is it Governed RPM ??

I got some time again and finished up the 1985 S620. Got it running and let it warm up, and did a little carb adjusting and it seams pretty good to me. I like to keep it on the rich side for now. So I put my tach on it and averaged about 3800 RPM. Manualy operated the throttle and to my ear seams like 3800 to 4000 RPM seams about correct. The manual that stuart80112 posted had the MAX RPM for the 1985 AH600 to be 4300 to 4700. So my question still is what is the goverened RPM?? 4300 to 4700 RPM seams to high for me. I hope we get one more snow blast and I can try it out. If it seams to slow I will bump it up to 4000 and see how it works. I'll get a pic of it and post it. It must be a Canada one it has French on it. Ahe Thanks
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post #10 of 19 Old 02-22-2016, 08:51 PM
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I got some time again and finished up the 1985 S620. Got it running and let it warm up, and did a little carb adjusting and it seams pretty good to me. I like to keep it on the rich side for now. So I put my tach on it and averaged about 3800 RPM. Manualy operated the throttle and to my ear seams like 3800 to 4000 RPM seams about correct. The manual that stuart80112 posted had the MAX RPM for the 1985 AH600 to be 4300 to 4700. So my question still is what is the goverened RPM?? 4300 to 4700 RPM seams to high for me. I hope we get one more snow blast and I can try it out. If it seams to slow I will bump it up to 4000 and see how it works. I'll get a pic of it and post it. It must be a Canada one it has French on it. Ahe Thanks
Glad it's working for you! One thing to watch out for... don't run it with the covers half on and half off while you tune it. You'll melt the back cover. The exhaust feeds through that horizontal black pipe between the operator and the back cover. Don't ask me how I know this. ;-)
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