b+s engine running very slow

A

asong

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• Aug 15, 2012 / b+s engine running very slow

• #1

i have a b+s engine, and when i start it, it runs, then couple seconds later the engine just slows down and dies. i change the oil not too long ago, air filter looks fine.

there is this spring by the air filter, and when i poke it with a screw driver, it runs really fast, then when i let it go, it goes back to slow. maybe i have to replace the spring?

 

Last edited: Aug 15, 2012

pugaltitude

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• Aug 15, 2012 / b+s engine running very slow

• #2

Sounds like carburetor is the problem. Give it a clean.
What is the model, type and code of the engine?
Could be a diaphragm problem if fitted.
The spring is for the governor and controls rpm when engine running.

 

EngineMan

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• Aug 15, 2012 / b+s engine running very slow

• #3

You need to post up the engine number's and type, looks like that so called spring is off the governor.

 

A

asong

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• Aug 15, 2012 / b+s engine running very slow

• #4

hi and ty.

model number is: 11A-414D129

serial number is: 1F281K31342

it is a Yard Machines 4HP 21'' mower.

 

A

asong

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• Aug 15, 2012 / b+s engine running very slow

• #5

pugaltitude said:

Sounds like carburetor is the problem. Give it a clean.
What is the model, type and code of the engine?
Could be a diaphragm problem if fitted.
The spring is for the governor and controls rpm when engine running.

Click to expand...

hi.

i cleaned the carburetor not too long ago. it pumps well, so i dont think thats the problem.

i think the spring is messed up. not sure where its suppose to go. if i take a picture, can you see if its in the right place? ty.

 

R

Rivets

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• Aug 15, 2012 / b+s engine running very slow

• #6

You have to bend the bracket that the spring is attached to. Probably bent it in running into bushes.

 

A

asong

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• Aug 15, 2012 / b+s engine running very slow

• #7

Rivets said:

You have to bend the bracket that the spring is attached to. Probably bent it in running into bushes.

Click to expand...

hi. here is a picture.

 

R

Rivets

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• Aug 15, 2012 / b+s engine running very slow

• #8

Can you take off that large spring and send another picture? There should only be one spring and I don't know what the small one is for. Thank you, I'll be here until 9PM central time.

 

A

asong

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• Aug 15, 2012 / b+s engine running very slow

• #9

hi.

im looking at the manual, and it says the remote throttle control may need adjustment. any idea how i can do this? ty.

 

R

Rivets

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• Aug 15, 2012 / b+s engine running very slow

• #10

Don't see a remote control hookup in your picture. Do you have a speed control on the handle?