View Full Version : Part number Tecumseh CARB HM80

12-14-2011, 06:24 PM
Hi, just bought an old white snowblower 8HP with Tecumseh motor.

I need to find the part number before ordering a new carb because this one is leaking gaz.

My motor number and serial:




My carb have idle mixture screw and the main mixture screw under the bowl.

Let me know if you need more info or maybe a photo to get the part number to find my replacement part.

Thank you.:laugh:

12-14-2011, 08:52 PM
Is there a need for a new carb? Where is the carb leaking? Most likely you have a bad needle/seat or a float that is bad. Take the carb apart and clean thoroughly.

Unless the carb is terribly corroded, you should be able to rebuild with part #631021B(needle/seat/bowl gasket), a couple #632547 orings and a bowl nut gasket(don't know that number off the top of my head).

I think you will find the link typical of your carb:


On older stuff, a leak can develop due to a cracked inlet elbow where the fuel line fits to the carb. On occasion you will find a float that has either developed a hole or the solder seam has developed a leak. If the float takes on gas, it will sink in the bowl, failing to shut off fuel at the needle/seat.

As best I can tell, the carb part number is 631678.

Pick your poison.

12-14-2011, 08:57 PM

If your numbers are correct, here is a parts breakdown although carb parts are not listed.


12-14-2011, 09:17 PM
Your Carburetor Parts Diagram- http://www.partstree.com/parts/?lc=tecumseh&mn=WALBRO-631660&dn=CALME1631660-CA

Tecumseh Carburetor Identification,Troubleshooting and Service Guide- http://billious.com/dl/Tecumseh.Carburetor.Identification.Troubleshooting.and.Service.pdf

Carburetor # 631660a

Where is the carburetor leaking from?

12-14-2011, 09:25 PM
Hey ArenaLandscaping, You try'n to get on the payroll around here ? :laugh:

piston slapper
12-14-2011, 09:28 PM
Ditto Dutch.
Clean the carb and install a new needle, seat, and float
Carb repair 101. The older techumseh carb are basically
The same since they were built by Clinton back in the 60"s.
Posted via Mobile Device

12-14-2011, 09:32 PM
Hey ArenaLandscaping, You try'n to get on the payroll around here ?

:nono: lol

12-15-2011, 08:50 AM
Ive found today that my shutoff valve is leaking. Because i drain my carb after use and card have fuel in the bowl!

I will change this part its not s expensive. Maybe the gaz hose too.

Of course ill do a rebuild with the kit they sell its cheaper..

A new fuel bowl (mine is rusted at the bottom inside)
Carb rebuild kit
Shut off valve and 2 feet of gaz hose

thanks guys for your replys