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I have a G5500 with push button start, 24HP Platinum engine. For the past few years the mower would start great and mow great the first day of the season, then not start again until the carb was cleaned. This year I have had a new carb, fuel filter, fuel lines and tank installed. Again, ran great the first day back, this morning when I started it, cracks, but has black fuel rich smoke and spitting and sputtering. With the push button start I assume it has some electronic choke? What can I do to get this mower running good?

Mix Star Tron Fuel Treatment in gas can per instructions on bottle & use 93 octane gasoline in all outdoor power equipment. I purchased a plastic measuring 36oz.cup at Walmart when purchasing bottle of Star Tron which does what bottle says.

Check your engine oil level... be sure it isn't ovefull and smells like gasoline;

mechanic mark said:

Mix Star Tron Fuel Treatment in gas can per instructions on bottle & use 93 octane gasoline in all outdoor power equipment. I purchased a plastic measuring 36oz.cup at Walmart when purchasing bottle of Star Tron which does what bottle says.

https://www.google.com/search?q=star+tron&oq=Star+Tron&aqs=chrome.0.69i59j0i512l4j46i199i465i512j0i512l4.15455j0j4&sourceid=chrome&ie=UTF-8

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Thank you for the reply, but bad fuel is not my problem. New carb, new filter, new fuel lines, new tank and new fuel.

clinchfield33 said:

Thank you for the reply, but bad fuel is not my problem. New carb, new filter, new fuel lines, new tank and new fuel.

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Adding no fuel treatment is your problem, also check spark plugs & air filter for replacement. With engine cold adjust valves to specs. in engine manual. Post model xxxxxx, type xxxx, trim xx, & code numbers from engine, thanks, Mark
B&S Technician shows proper procedure for adjusting valves, different engine & specs. possibly different.

Adjust the valve lash
Check that both cylinders are working by removing alternative plug leads
If you can go a leak down test
I suspect a blown head gasket & valve lash out of adjustment

Found my problem, but I need help with a part name or number. This is the "flap" that bolts to the top of the left coil, it has a rod and spring from the carb. My mount had broken and not keeping the rod or spring tight. I tried to post of photo, but this site will not allow a photo of ANY size.

And we have no idea what you are talking about
So either post the Model Type & serial number so we can look up the IPL or add the picture.
To post a photo it has to be in the right format
JPG works best and I usually resize then to 10" on the longest side @ 72 dpi
RAW format that most cameras & phones use will get rejected by the server

clinchfield33 said:

Found my problem, but I need help with a part name or number. This is the "flap" that bolts to the top of the left coil, it has a rod and spring from the carb. My mount had broken and not keeping the rod or spring tight. I tried to post of photo, but this site will not allow a photo of ANY size.

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Sounds like a governor assembly. Check for new/used one with repair shop or Dealer.

Sounds like the air vane or thermostat arm for the auto choke.

no model type info,, good bye. No further reply from anyone as expected.

Need you to post Engine Manufacturer, if B&S post Model xxxxxx, Type xxxx, Trim xx & Code xxxxxxx from engine top or side of engine.

Scrubcadet10 said:

Sounds like the air vane or thermostat arm for the auto choke.

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You Sir are a genius!! Thank you so much!! I will be mowing in no time. Thanks to you other fellows as well.

clinchfield33 said:

Thank you for the reply, but bad fuel is not my problem. New carb, new filter, new fuel lines, new tank and new fuel.

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Which really means this new carb in untested. New doesn't mean new these days.

clinchfield33 said:

but this site will not allow a photo of ANY size.

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Yes it does.



Even post up videos.

VRR.DYNDNS>BIZ said:

no model type info,, good bye. No further reply from anyone as expected.

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VRR.DYNDNS>BIZ said:

no model type info,, good bye. No further reply from anyone as expected.

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Your useless comment is to late, someone with an IQ answered the the question.

mechanic mark said:

Need you to post Engine Manufacturer, if B&S post Model xxxxxx, Type xxxx, Trim xx & Code xxxxxxx from engine top or side of engine.

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Thank you Mark, I go this questions answered, next time I will make sure to post that information.

clinchfield33 said:

Thank you Mark, I go this questions answered, next time I will make sure to post that information.

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People forget that they are there with the mower right in front of them & we are her with a screen full of words.
Even worse is different people use different words to describe the same thing which may or may not be the manufacturers actual part name so it gets very confusing trying to work out what some people are talking about .
The relevent numbers allows us to pull the IPL and then work out what you are talking about .
For an engine it is the full engine number
For a mower it is the model number & serial number from the ID tag, not the decal on the side of the hood which has no meaning whatsoever as the same model can be made by several different factories and in some cases may only exist in one state because it is called some thing different elsewhere ( marketing ) .

clinchfield33 said:

Your useless comment is to late, someone with an IQ answered the the question.

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I hope you stick around here. I enjoyed your witty responses.

slomo said:

I hope you stick around here. I enjoyed your witty responses.

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I will, and I will also take the time to learn the etiquette for posting. Not easy for a new person to step in not knowing the lingo, numbers and such. You guys have saved me a few hundred dollars already, so I tip my hat to that! Thank you again.