Tecumseh Carb Questions

[kbak]

I have a Tecomseh HS40-55249B with no carb. I looked up the part number for the carb, and 631537 is listed, but it's no longer available. The web site said to use a 631795A carb as a replacement. I'm not having much luck finding one. When I look at other replacements, questions come to mind:

1) Can I use a primer instead of a choke on a mini bike?

2) Can I use a carb from a larger or smaller HP engine?

3) How do I know the bolt pattern of another carb will fit my intake manifold?

4) Are there any other issues to watch out for?

Ken

 

[Bill Ellerby]

The replacement carb is available on Ebay, also Sears carries the replacement carb.

 

[kbak]

Ok, thanks. They cost a lot more than I thought they would. I'd rather go with the cheaper carbs, but I'm not sure of the primer vs choke. Any comments?

 

[Bill Ellerby]

Primer carbs are fixed jet, the oem are adjustable. You want adjustable.

 

[buckeye]

Worth the cost to get adjustable.:thumbsup:

 

[Newoldstock]

I have one that is both primer and choke with adjustable jets.

HM100 carb from a snow king me thinks...

 

[The Restore Kid]

I have one that is both primer and choke with adjustable jets.

HM100 carb from a snow king me thinks...

He is talking about the primer bulb built into the body of the carb...
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HS 40 is the same as HS50 when you are looking around.. H-35 is pretty well the same carb as well.. The BIGGEST thing to have rite is the bore of the carb.. 3-5 horse, best options are like around AA battery sized hole.. Bigger causes poor acceleration and cold starts.. Smaller limits the overall horse power when you are trying to 800 miles per hour up hill pulling a wagon...

ALWAYS buy the adjustable jet carburetor...

If you already have the modern fixed jet primer carb on a lawn mowrer you don't use.. Try it.. :shrug: You might hit one out of the park with luck...

Bolt pattern is all the same from like ten horse vertical shaft, down to 2 horse..

Throttle shafts and choke arm location and position changes GREATLY from one carb to another.....

H-50 is the exact same (body) for the most part, and will (run) exactly the same as HS-50..

BUUuuuuut

The throttle shaft hooks up differently... Choke arm works backwards, and isn't rite for HS.. :mellow:

Unless somebody is willing to sell you an ACTUAL TECUMSEH OR LAWSON MADE, H-35 or HS adjustable jet carburetor for the same price or less than the new Oregon carbs....

Then next best bet is this carb.....

Amazon.com: Oregon 50-647, Carburetor, Tecumseh 6326: Patio, Lawn & Garden

 

[Havasu Dave]

Then next best bet is this carb.....

Amazon.com: Oregon 50-647, Carburetor, Tecumseh 6326: Patio, Lawn & Garden

Hey Restore, does that carb work on HS 35's? I "thought" I'd ordered that one, put on HS35, ran way rich, put on HS 40 and worked great. Not sure about this, and I moved on to other projects, but wondered if the same carb worked on both motors. Thanks, and hope I'm not hijacking the thread.

 

[The Restore Kid]

yes, that is H35 and HS or HSSK

 

[Havasu Dave]

yes, that is H35 and HS or HSSK

Thanks. I ended up ordering a real live Tec carb, put it on, spitting fuel out the carb. Time to check timing, but I guess it'll go on my shelf for someone else to fix.

 

[The Restore Kid]

Or the valves.. Intake valve is staying open too long maybe..