Craftsman small two cycle snowblower fails to start - Snowblower Forum : Snow Blower Forums
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post #1 of 26 Old 02-17-2015, 03:17 PM Thread Starter
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Craftsman small two cycle snowblower fails to start

Hi, My Craftsman two stroke single-stage snow-blower fails to start (536.885210). At first it would start to die when clearing snow. I'd back up and it would be OK. Then it died and would and will not start. I put fresh gas and 40/1 oil in the tank and checked and cleaned the spark plug. Still no start. I tested the ignition switch. The switch is closed in the off position and open in the run position. In my thinking switch should be closed when in start. But either way the switch is turned, engine fails to start. I welcome any wisdom. Thanks
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post #2 of 26 Old 02-17-2015, 09:10 PM
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The switch acts to short out the ignition coil, intentionally. So, the switch should be in the open position.

Considering that it sounds like a "warm" engine "no-start" I would then consider either the ignition coil or the carb. I'd lean heavier on the coil, as heat tends to kill them.

It also would not hurt to inspect the electric wires leading to the switch and make sure that there aren't any unintentionally grounds.

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post #3 of 26 Old 02-17-2015, 09:30 PM
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Sounds like possible a case of engine not breathing.

Check the exhaust for carbon build up, take the bolt/s that hold the muffler off and remove the muffler, then just look in the port for black carbon buildup/partial blockage.

If nothing, then it's got a different problem just put the muffler back on.

And if you see some blockage you first need to pull the recoil slowly (plug wire off!) until the cylinder is blocking the port first before you clear it. Then clear it with a wooden dowel or plastic putty knife and blow the ports out with canned air or compressor at low- medium pressure.

Let us know what you find there.. WM !

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91' Toro Powershift 824/Predator 301cc
05' Toro 3650/ 6.5 RTek
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post #4 of 26 Old 02-18-2015, 12:55 PM Thread Starter
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Thanks, I am about to go out and get a spark tester. Auto Zone has the adjustable type to check spark strength.
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post #5 of 26 Old 02-18-2015, 01:24 PM
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Welcome to the forum Wmlaveck

Lets us know what you find out on the spark.
Might also be a fuel starvation problem.

.
Make sure the windows are up before the snow plow goes by !!

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post #6 of 26 Old 02-18-2015, 04:57 PM Thread Starter
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OK,
I checked for spark and it got what looks like a strong spark. So I would think it is a breathing problem (CPR?) as Pathfinder13 pointed out. So I will check the muffler and port. If that's OK, then I'll take a look at the carburetor. In a perfect world, machines would fix themselves.
Thanks

Last edited by wmlaveck; 02-18-2015 at 04:59 PM. Reason: spelling
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post #7 of 26 Old 02-18-2015, 07:18 PM
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Quote:
Originally Posted by wmlaveck View Post
Thanks, I am about to go out and get a spark tester. Auto Zone has the adjustable type to check spark strength.
Will it attempt to run on starting fluid (ether) ?
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post #8 of 26 Old 02-18-2015, 07:31 PM Thread Starter
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I think I'll first try to clean the carburetor. That will wait until tomorrow.
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post #9 of 26 Old 02-18-2015, 07:36 PM
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Quote:
Originally Posted by wmlaveck View Post
OK,
In a perfect world, machines would fix themselves.
Thanks
What's the fun in that?

Garage:
MTD....2 stage(modern 8.5 HP) not my favorite
Honda HS622 TA-B - acquired at an auction- nice machine for it's size.
Toro S-140- Picked it up on trash day... it runs, sort of.
Yamaha YS 240 TB "Ricky" latest Craigslist find- on the bench now.
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post #10 of 26 Old 02-18-2015, 07:54 PM
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Do the quickest/easiest stuff first ;-) Process of elimination. You had said it would puff out while running that's why I thought it may be blockage developing. Two strokes are infamous for that. The Toro 3650 manual even has what I sugested as a maintenance procedure. ;-)

Edit: might have been in the Briggs 2 stroke engine manual, or maybe it was Toro manual, it was one of them but I forget which one.

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91' Toro Powershift 824/Predator 301cc
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Last edited by Pathfinder13; 02-18-2015 at 07:59 PM.
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