Craftsman stalls, starts slow - Snowblower Forum : Snow Blower Forums
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post #1 of 20 Old 11-11-2014, 06:57 PM Thread Starter
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Craftsman stalls, starts slow

I have a 536.886440 with 5 hp Tecumseh. Replaced spark plug and carburetor. Started ok in summer, but now very difficult, and when it does start, it stalls after a minute or so. I've tried both with and without fuel cap. I never could get it to start with recoil, only with electric start. Seems like holding the electric start for 10 seconds or more before it starts to fire, and longer to keep it running, is going to burn out the starter. My other Craftsman fires up on first pull or quick push of starter button. Any ideas of where to look would be great!
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post #2 of 20 Old 11-11-2014, 07:41 PM
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Try fresh gas and toss in a bit of Seafoam
Clean up the points and condenser
Replace spark plug
Adjust the carburetor
Check any wiring, May have an exposed/frayed wire possibly causing weak spark
Make sure spark plug is set to the correct gap

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post #3 of 20 Old 11-11-2014, 07:42 PM
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Lightbulb

Sounds like a fuel problem somewhere.
But have you checked the spark plug wire?

I had a problem with my fitting and it sort of did that.
Here, https://www.snowblowerforum.com/forum...placement.html

The fuel line is not kinked anywhere? Clamps all tight? I replaced my clamps with the mini screw on types, I don't like the squeeze type.
The preprimer/bulb oK?

I got the ball rolling.
There are more experienced people here then me, someone should add to this shortly.

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***********************
Craftsman #536886141(Around 2000?)
5 Horse, Tecumseh HSSK50-67392S
22" Dual Stage
***********************
"Classic" 1963 S-226 Snowbird
4 Horse (orig) Briggs & Stratton#6305201
22" Dual Stage
***********************
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post #4 of 20 Old 11-11-2014, 07:43 PM
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Quote:
Originally Posted by SlowRider22 View Post
Try fresh gas and toss in a bit of Seafoam
Clean up the points and condenser
Replace spark plug
Adjust the carburetor
Check any wiring, May have an exposed/frayed wire possibly causing weak spark
Make sure spark plug is set to the correct gap
He stated new plug and new carb.

Edit,
Have you tried fresh gas? Has it been sitting there all summer with the gas?
Do you add stabilizer to your gas?

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***********************
Craftsman #536886141(Around 2000?)
5 Horse, Tecumseh HSSK50-67392S
22" Dual Stage
***********************
"Classic" 1963 S-226 Snowbird
4 Horse (orig) Briggs & Stratton#6305201
22" Dual Stage
***********************

Last edited by Big Ed; 11-11-2014 at 07:46 PM.
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post #5 of 20 Old 11-11-2014, 07:55 PM
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Quote:
Originally Posted by Big Ed View Post
He stated new plug and new carb.
Yes, he surely did.
However my comment still holds...a new carb may be clean and fresh, but the adjustment screws may not be set for his particular machine.
And while rare, new spark plugs sometimes are defective. In the past 8 years since I began working on small engines, I've had a couple new plugs actually be the culprit in running poorly

1972 Ariens 13/32 restored & repowered
1971 Ariens 7/24 (retired)
2011 Ariens Deluxe 24
1980 Ariens st7/24 (retired)
1985 Ariens st10/36
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post #6 of 20 Old 11-11-2014, 08:08 PM
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Quote:
Originally Posted by SlowRider22 View Post
Yes, he surely did.
However my comment still holds...a new carb may be clean and fresh, but the adjustment screws may not be set for his particular machine.
And while rare, new spark plugs sometimes are defective. In the past 8 years since I began working on small engines, I've had a couple new plugs actually be the culprit in running poorly
My bad I did not see one word...adjustment.
All true then, yes and the plug could be bad if he dropped it or if it got banged up in shipping somehow.
It could be the plug wire itself, but I think it sounds more like it is in the fuel system somehow?

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***********************
Craftsman #536886141(Around 2000?)
5 Horse, Tecumseh HSSK50-67392S
22" Dual Stage
***********************
"Classic" 1963 S-226 Snowbird
4 Horse (orig) Briggs & Stratton#6305201
22" Dual Stage
***********************
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post #7 of 20 Old 11-11-2014, 08:13 PM
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Quote:
Originally Posted by Big Ed View Post
My bad I did not see one word...adjustment.
All true then, yes and the plug could be bad if he dropped it or if it got banged up in shipping somehow.
It could be the plug wire itself, but I think it sounds more like it is in the fuel system somehow?
No worries at all, Big Ed.
This is how we figure out solutions to all these problems...different folks give input based on their knowledge and perspective, all the ideas are then put together, and that's how solutions come about

1972 Ariens 13/32 restored & repowered
1971 Ariens 7/24 (retired)
2011 Ariens Deluxe 24
1980 Ariens st7/24 (retired)
1985 Ariens st10/36
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post #8 of 20 Old 11-11-2014, 08:32 PM Thread Starter
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Thank you all for your input! I've had 2 different new spark plugs in it, but I wonder about how strong the spark is. How well does a spark tester work? Thinking about picking one up. I drained the fuel and ran it dry before storage, I'll try some seafoam tomorrow anyway. I think I have a can somewhere. Also thinking of pulling the fuel lines and blowing them out if they still look good. I assume the prime bulb is good because 3 pumps leaves the carb dripping with gas. Getting cold here in Minneapolis, and only have a one car, unheated garage, so I'm hoping to figure this out soon and sell it!
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post #9 of 20 Old 11-11-2014, 08:37 PM
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Quote:
Originally Posted by SlowRider22 View Post
No worries at all, Big Ed.
This is how we figure out solutions to all these problems...different folks give input based on their knowledge and perspective, all the ideas are then put together, and that's how solutions come about
I hear you. I speed read a lot, I ought to slow down or speed read twice.

Quote:
Originally Posted by cs42778 View Post
Thank you all for your input! I've had 2 different new spark plugs in it, but I wonder about how strong the spark is. How well does a spark tester work? Thinking about picking one up. I drained the fuel and ran it dry before storage, I'll try some seafoam tomorrow anyway. I think I have a can somewhere. Also thinking of pulling the fuel lines and blowing them out if they still look good. I assume the prime bulb is good because 3 pumps leaves the carb dripping with gas. Getting cold here in Minneapolis, and only have a one car, unheated garage, so I'm hoping to figure this out soon and sell it!
Sell it? What are you going to blow snow with?

I hate shoveling SNOW!
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***********************
Craftsman #536886141(Around 2000?)
5 Horse, Tecumseh HSSK50-67392S
22" Dual Stage
***********************
"Classic" 1963 S-226 Snowbird
4 Horse (orig) Briggs & Stratton#6305201
22" Dual Stage
***********************
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post #10 of 20 Old 11-11-2014, 08:48 PM
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Have you tried starting it by adding a little gas down the spark plug hole to eliminate carb or ignition issues? I have worked on a few Tecumseh's this summer that had poor compression due to no valve clearance holding the exhaust valve slightly open. Have you done a compression or leak down test to confirm no valve leakage?

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