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#4783288 - 06/10/18 06:54 PM Nikki carburetor clean and rebuild
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1657
Loc: Crawfordville FL
42” Troy-bilt pony with 17.5 hp B&S Power Built. Has a Nikki carburetor. My brother-in-law’s mower, sat for a long time without being run.
When I pulled the fuel line off the carb something resembling mud came out. I pulled the carb off, dumped yellow gas out of the bowl. Sprayed everything out with carb cleaner, put it back on and she still wouldn’t run. It would run if I sprayed carb cleaner directly into the intake so I knew I had a fueling problem.

Took the bowl off again and it was dry, so I grabbed the big guns and shot some compressed air through the fuel inlet, popped the float valve off and sprayed the passages clean and ran air through all of them. Valve works because when I blow through it it will stop flow as I move the float.

I’m waiting for a new float valve gasket, old one has swelled and doesn’t fit. Gasket won’t be here until Tuesday, so what else should I check while I have it apart? I’ve replaced the air and fuel filters. The oil has been changed and I’ve got the battery on a tender while I’m waiting on the gasket. Oh and I have a new spark plug arriving tomorrow. Ngk iridium because they really do improve starting and my brother-in-law is not mechanically inclined and does no maintenance so best to have a “lifetime” plug installed.

I’ll be checking tire pressures, possibly shooting some grease into the steering gear. I don’t have the right kind of grease, the stuff I have is high moly wheel bearing grease. Valvoline I think.

Anyway, what else should I look over while I have the mower?
_________________________
2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30

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#4783321 - 06/10/18 07:33 PM Re: Nikki carburetor clean and rebuild [Re: SilverFusion2010]
edwardh1 Offline


Registered: 01/17/03
Posts: 2941
Loc: Coastal South Carolina
honda gen set bowl drain plug gasket was sold only as a $32 package. i went to a hardware store for a simple washer. glad u could get the gasket
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These products are all new every year?? They are a revolution!!! Razor blades, mens shirts, TVs, wiper blades, gutter guards, hearing aids... according to the ads. But also all new last year

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#4783336 - 06/10/18 07:56 PM Re: Nikki carburetor clean and rebuild [Re: SilverFusion2010]
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1657
Loc: Crawfordville FL
It was 7.88 on amazon
_________________________
2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30

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#4783377 - 06/10/18 08:50 PM Re: Nikki carburetor clean and rebuild [Re: SilverFusion2010]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
The gasket will probably shrink back to normal by the time the other one arrives.
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"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4783470 - 06/10/18 10:40 PM Re: Nikki carburetor clean and rebuild [Re: SilverFusion2010]
CT8 Offline


Registered: 10/09/14
Posts: 10946
Loc: Idaho
mud looking stuff in the carb float bowl? Is there a gas filter?
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"Don't let your preconceived notions get in the way of facts."
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#4783485 - 06/10/18 11:21 PM Re: Nikki carburetor clean and rebuild [Re: SilverFusion2010]
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1657
Loc: Crawfordville FL
Yes, there is a fuel filter. I just replaced it
_________________________
2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30

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#4783495 - 06/10/18 11:54 PM Re: Nikki carburetor clean and rebuild [Re: SilverFusion2010]
bubbatime Offline


Registered: 03/18/08
Posts: 5622
Loc: South Florida
An ebay or Amazon carb can be found for $12-$30 some times, depending on model. Always look at the cost of a new carb before buying gaskets and attempting to clean it.
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#4783566 - 06/11/18 05:34 AM Re: Nikki carburetor clean and rebuild [Re: SilverFusion2010]
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1657
Loc: Crawfordville FL
Last I checked 7.88 < 30
_________________________
2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30

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#4783570 - 06/11/18 06:01 AM Re: Nikki carburetor clean and rebuild [Re: SilverFusion2010]
das_peikko Offline


Registered: 01/01/18
Posts: 503
Loc: San Antonio, TX
Those tiny little ports can get covered over by corrosion. Shop mechanics will use tag wire to clean them out. If there's any welch plugs, the ports underneath the welch plugs may be covered over with corrosion. You can use tag wire to clean the ports out. New welch plugs will have to be installed.

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#4783600 - 06/11/18 07:26 AM Re: Nikki carburetor clean and rebuild [Re: SilverFusion2010]
Delta Offline


Registered: 04/20/14
Posts: 1145
Loc: South Central PA
I have a Nikki carb on my Briggs 13.5HP, and more than likely it's the same model. Couple years ago it was $120 and the cheapest I've seen it now is around $75.
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'17 VW GTI 2.0T - 6MT - 7K
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