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#143698 - 12/03/18 02:50 AM replacement carb for 94 serow
greyapron Offline
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Registered: 12/01/18
Posts: 7
Loc: Georgia United States
Is this carb really this hard to find or do I just not know where to look?Any help would be greatly appreciated.

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#143702 - 12/03/18 03:23 PM Re: replacement carb for 94 serow [Re: greyapron]
peejman Offline
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Registered: 06/03/13
Posts: 2981
Loc: East TN USA
Your best bet for a whole carb will be a salvage yard. The carb itself may be used on several models of bike and ATV, but the jetting will be different for each model.

That said, what's wrong with it that you need to replace the whole carb?
_________________________
This shall pass, be still and know.
2006 XT225, UNI filter, ProTaper bars, MSR handguards, SS front brake line, Shinko 241's.

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#143718 - 12/05/18 02:00 PM Re: replacement carb for 94 serow [Re: greyapron]
greyapron Offline
Junior Member

Registered: 12/01/18
Posts: 7
Loc: Georgia United States
Well I broke the plastic choke connection from the carb and jb weld it back So it runs but I have no choke. Also ive heard about the tm33 upgrade is that fairly simple and is it worth it ? Thanks

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#143719 - 12/05/18 03:31 PM Re: replacement carb for 94 serow [Re: greyapron]
Muniac Offline


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Registered: 01/16/04
Posts: 5531
Loc: Montrose, CO
The TM33-8012 pumper carburetor isn't an exact replacement. I did some R&D with the TM33 back in 2004. The OEM throttle cable bracket won't clear the top frame rail for starters. Then there are jetting issues. I got my TM33 "close" but not perfect. Many have experimented with retrofitting this carburetor. To date I have failed to obtain exact jetting information from anyone. So I think this replacement may be problematic.

The stock OEM CV carburetor on the XT225 doesn't have a choke. It's a mixture enrichment plunger which is spring loaded. As I recall, there is a fitting that screws into the carburetor body that guides the cable out through an angled metal sheath. It also includes the plunger and spring. It might be possible to have a machine shop make that piece for you?? Or try to find a replacement.

Miller Cycles in Provo Utah might be able to help. Dan Miller owns that business. He's an old school guy with many years of experience. The phone number over there is: (801) 375-4436 Good luck!
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#143722 - 12/05/18 04:36 PM Re: replacement carb for 94 serow [Re: greyapron]
greyapron Offline
Junior Member

Registered: 12/01/18
Posts: 7
Loc: Georgia United States
It seems to run ok without it. however the bike runs really strong after I clean the carb then after a few rides seems less powerful. Any idea why?

thanks again

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#143723 - 12/05/18 05:34 PM Re: replacement carb for 94 serow [Re: greyapron]
peejman Offline
Platinum Member
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Registered: 06/03/13
Posts: 2981
Loc: East TN USA
Originally Posted By: greyapron
It seems to run ok without it. however the bike runs really strong after I clean the carb then after a few rides seems less powerful. Any idea why?

thanks again


What do you find when you clean it? Is there rust in the tank? Do you have a fuel filter installed?
_________________________
This shall pass, be still and know.
2006 XT225, UNI filter, ProTaper bars, MSR handguards, SS front brake line, Shinko 241's.

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#143731 - 12/07/18 01:30 PM Re: replacement carb for 94 serow [Re: greyapron]
greyapron Offline
Junior Member

Registered: 12/01/18
Posts: 7
Loc: Georgia United States
An orange brownish muck the 1st couple of times and it's kind of embarrassing but I dont know if there is a fuel filter there is a little gold looking thing on the fuel line but it is awfully small

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#143733 - 12/07/18 03:02 PM Re: replacement carb for 94 serow [Re: greyapron]
Muniac Offline


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Registered: 01/16/04
Posts: 5531
Loc: Montrose, CO
There is a short piece of black hose about 5/16" in diameter (OD) 4" long that connects the fuel tank petcock to the carburetor. With a pinch clamp on either end. An in line fuel filter would be within this hose. Most likely with some extra hose added to accommodate the filter. These are usually cylindrical or square in shape. Also clear or translucent. If you don't see such a device, you don't have a filter in there.

If you do add one, I'd avoid the cheap Chinese imported ones. The plastic can develop check cracks in the presence of gasoline. Which may be the alcohol content. You don't want leaks there and gasoline spilling down on a hot engine.

Tygon tubing is a good choice for a fuel line there. It's soft, flexible and holds up well. Hardware stores that sell small engine power tools sometime carry this. There is a link HERE so you can see what that tubing looks like. Good luck.
_________________________
Evolve & Simplify
Be There or Be Nowhere! A Few Adventures & Video

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#143734 - 12/07/18 03:02 PM Re: replacement carb for 94 serow [Re: greyapron]
peejman Offline
Platinum Member
*****

Registered: 06/03/13
Posts: 2981
Loc: East TN USA
Originally Posted By: greyapron
An orange brownish muck the 1st couple of times and it's kind of embarrassing but I dont know if there is a fuel filter there is a little gold looking thing on the fuel line but it is awfully small


That sounds like rust coming from the fuel tank. The typical screen type filter won't stop it from getting into the carb and mucking up the works. There's several options for dealing with the rust, depending on how bad it is.
_________________________
This shall pass, be still and know.
2006 XT225, UNI filter, ProTaper bars, MSR handguards, SS front brake line, Shinko 241's.

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#143735 - 12/07/18 03:49 PM Re: replacement carb for 94 serow [Re: greyapron]
greyapron Offline
Junior Member

Registered: 12/01/18
Posts: 7
Loc: Georgia United States
When I first got the bike the gas in it was visible brownish now that I'm running only non ethanol the gas after several tanks full the gas in the tank is clear no idea how long old gas was in it. What are my low cost options ?

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