Craftsman 6.5 HP Lawn Mower, power-propelled

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  #1  
Old 06-03-13, 03:27 PM
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Craftsman 6.5 HP Lawn Mower, power-propelled

Briggs & Stratton 4-cycle engine.

Mower was starting on first pull and running great until one day after using it about an hour it suddenly died. It would restart but die after about 30 seconds. Dumped fuel tank and refilled, air filter is clean. It doesn't help to pump the primer while its running, still dies. Tried Starting fluid, same results. Feel the problem is with the carburetor.
Below is the parts list.
 
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  #2  
Old 06-03-13, 03:31 PM
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And most likly your right. Take it all apart and clean with carberator cleaner and rebuild it.
 
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Old 06-03-13, 06:20 PM
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the carb needs cleaning, however the bowl nut is the main jet and is probably clogged with gunk, remove the nut and clean all the holes, if the bowl falls off clean it also, refer to the pic below for the holes. Have a good one. Geo

[ATTACH=CONFIG]13451[/ATTACH]
 
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Old 06-04-13, 11:38 AM
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Thanks! I'll give it a shot.
 
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Old 06-04-13, 11:41 AM
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Thank you! That sounds like it might fix it without removing the carb.
 
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Old 06-08-13, 11:53 AM
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Ok, removed the bowl bolt and bowl. It looked clean as freshly from factory. The main jet was also clean, but went ahead cleaned both with wire & carb cleaner. Gas flowed very well when I removed the bowl, could raise float and gas would shut off.. seems no problem with float & needle valve.
Removed complete carb. It look clean inside but went ahead and cleaned with carb cleaner and wire.
Two questions below on the pictures.
Is there anything else I need to do before putting the carb back on and trying it?
Thanks
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Old 06-08-13, 09:53 PM
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If I remember right, that jet goes to the little hole you see in the underside of the carb just to the right of the main jet tube, between it and that dome looking part of the casting on the right. Don't remove the little cover, it rarely needs removal and you will ruin it trying to get it out.
 
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Old 06-09-13, 04:43 AM
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I never remove welch plugs unless absolutely necessary and even when I've removed them I was never totally sure I needed to. I would give several good attempts at cleaning the carb before resorting to it.

If you do need to remove it, you will destroy it. I drill a hole in it (make sure not to drill too deep and ruin the carb body). Then insert a steel rod like a drill bit or punch tip into the hole and wiggle, pry and pull to remove the plug. When done the new plug should fit right into the recess with the convex side up facing you. Tap the center of it with a flat faced punch to dent it in and seat it in place.
 
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Old 06-09-13, 05:51 AM
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I think this little jet you are pointing to is a vent , just run a torch tip cleaner through it and then follow it with some carburetor cleaner, do not take out the welch plug! Also the gasket shows it covering slightly the hole used to prime it when primer is pushed, replace that gasket. I normally soak ALL my carburetors in carbuertor cleaner. Then rince off with water and blow it dry. I do this work every day and for a living,,,,the carb pictured here looks good and clean but always follow up with tip cleaner and spary every hole with carb cleaner, good luck.
 
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Old 06-09-13, 12:35 PM
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You are right about the little hole, I followed it with a wire. Won't remove cover, Thanks
 
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Old 06-09-13, 12:55 PM
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Thanks cheese, Pilot Dane and mowerdude.
I don't have a kit with new gaskets yet but tomorrow will put it back together and give it a try.
One other question, couldn't get through this hole with a wire.
 
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Old 06-09-13, 01:38 PM
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Unsure about that hole............................
 
  #13  
Old 06-09-13, 05:55 PM
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You won't get a wire through it, it comes out under the welch plug. If you can blow spray carb cleaner through all the passages, they are probably okay.
 
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Old 06-10-13, 05:38 AM
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cheese, thanks a bunch, I'll put it together.
 
  #15  
Old 06-10-13, 02:42 PM
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Hey guys, installed the carb, started on 2nd pull, runs like new!
Thanks
 
  #16  
Old 06-10-13, 04:39 PM
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Success is a wonderful sound. Have a good one. Geo
 
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