Engine Craftsman with B&S runs great for 5 minutes, then dies

[stevenwbennett]

How old is the gas?

Brand new.

 

[pugaltitude]

Start at the beginning.

Whats the model, type and code?

I can honestly say iv never used feeler guages on a quantum. :laughing:

 

[AnthemBassMan]

Sounds like the carb needs cleaned. Especially the bowl nut/jet. Remove the bolt from the bottom of the carb with a 1/2" wrench or socket. But first either drain the gas, or clamp the line shut. Then take a small, stiff piece of copper wire or a small paper clip and run it through the two holes in the bolt at the base of the threads, and also down the center of it. Then give it a few good shots of carb cleaner to finish it off. Put the bowl back on and tighten the nut. Refill with fuel and give it a pull or two...

L8R,
Matt

 

[Fish]

Start at the beginning.

Whats the model, type and code?

I can honestly say iv never used feeler guages on a quantum. :laughing:

Wow!!!! Laughing????

 

[Fish]

So you have never worked on a Quantum????

 

[stevenwbennett]

Start at the beginning.

Whats the model, type and code?

12H802 - 2639-B1 00090756

 

[stevenwbennett]

Sounds like the carb needs cleaned. Especially the bowl nut/jet. Remove the bolt from the bottom of the carb with a 1/2" wrench or socket. But first either drain the gas, or clamp the line shut. Then take a small, stiff piece of copper wire or a small paper clip and run it through the two holes in the bolt at the base of the threads, and also down the center of it. Then give it a few good shots of carb cleaner to finish it off. Put the bowl back on and tighten the nut. Refill with fuel and give it a pull or two...

L8R,
Matt

Already did that.

 

[pugaltitude]

So you have never worked on a Quantum????

I order 250 quantum filters on winter stock and top up if required.

No your right never worked on one!! :laughing:

 

[Pochie]

I'd guess it might need a new ignition coil (armature-magneto). I've had this happen 3 times in the last 28 years. They work until hot and then quit...after they cool...they work again,etc. I don't know if your mower has these or not, but all my riding tractors did and do. Some lasted 2 years...some 25 years. Just an opinion. Good luck.

 

[AnthemBassMan]

I'd guess it might need a new ignition coil (armature-magneto). I've had this happen 3 times in the last 28 years. They work until hot and then quit...after they cool...they work again,etc. I don't know if your mower has these or not, but all my riding tractors did and do. Some lasted 2 years...some 25 years. Just an opinion. Good luck.

This is also a possibility. It's a somewhat common thing for Lawn-Boy mowers, but I've never personally seen it happen with a Briggs or Tecumseh. You can find new ones on eBay for under $20 with free shipping. It:s worth a shot since the carb has been ruled out...

L8R,
Matt