Carburetor: Servicing a 15-year-old Briggs 6.0 HP engine?

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  #1  
Old 06-24-15, 03:16 PM
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Carburetor: Servicing a 15-year-old Briggs 6.0 HP engine?

I have a 15-year-old Toro self-propelled 21" with a B&S GTS-XL 6.0 HP engine.

I've done all the normal servicing such as changed oil, plug, air filter, MAP sensor, etc. but have done nothing to the carburetor. The carb is not adjustable.

It's runs smoothly and starts on the first pull, but it may be running rich (by the smell of it) and the engine speed seems to be slower than it used to be (yes, that part could be my imagination).

If the engine is in fact running slow, it's not due to the governor spring - I've pulled on it and it is at its max.

Given the age and history, is there some sort of servicing the carb may need? Or perhaps carb replacement?

Thank you!
 
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Old 06-24-15, 04:01 PM
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You might try a strong dose of SeaFoam in the gas, usually it will cleanup minor varnish buildup in the carb. Have a good one. Geo
 
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Old 06-24-15, 07:31 PM
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MAP sensor??!!
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Old 06-24-15, 07:37 PM
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Sharp blade?
Amazing to have it run that long without have to rebuild the carb.
 
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Old 06-25-15, 05:13 AM
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MAP sensor?
Sorry, just an attempt at some humor to spice up what could be perceived as a boring subject.
 
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Old 06-25-15, 05:17 AM
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Sharp blade?
Yes, I have sharpened the blade regularly - I knew I was forgetting something.

Amazing to have it run that long without have to rebuild the carb.
So, it sounds like I should rebuild the carb regardless?
 
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Old 06-25-15, 04:20 PM
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Did this by chance start after hitting a solid object? (Thinking partially sheared flywheel key). Otherwise, I would go to the carburetor.
 
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Old 06-25-15, 06:18 PM
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Did this by chance start after hitting a solid object? (Thinking partially sheared flywheel key).
No, I did not hit anything. Just curious - if it were a flywheel issue, wouldn't the engine run roughly?

Otherwise, I would go to the carburetor.
OK - would that mean buying a rebuild kit as opposed to a specific part?

Thanks!
 
  #9  
Old 06-25-15, 07:07 PM
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If used regularly the engine has a lot of hours on it, before starting to throw money in a 15yr old engine, check the compression to see how it compares to spec.
Try running it with the SeaFoam, it's about $5-6 from any auto store or wally world, when you start taking things apart Murphy's law is waiting for you. Have a good one. Geo
 
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Old 06-25-15, 10:50 PM
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A partially sheared key doesn't necessarily make on run rough. It can be sluggish. I don't know what your carburetor might need, possibly a cleaning, or possibly more.
 
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