Carb question - Snowmobile Forum: Your #1 Snowmobile Forum

rjr · 12-10-2007, 09:44 PM

I volunteered to help my neighbor resurrect a 1980ish EX440D. It has been left neglected, uncovered in his back yard for the last 3 years. Being a Yamaha I had confidence that it would still run if it wasn't seized.

To make a long story short, it runs great if you pour gas down the throat of the carb. One pull and it runs until the prime is gone. (I used the 50:1 mix I have for my 3.3hp Merc dinghy motor)

The fuel pump is pumping so I think a carb rebuild should fix the problem. The choke is frozen although the cable is not. Does anyone know if the choke cable is attached to a piston that should pull out? I can't see any other way to remove the choke cable but am afraid to yank too hard without knowing for sure.

Thanks
rjr

rjr · 12-10-2007, 09:47 PM

The reason my neighbor abandoned the sled was that the variable pulley on the engine failed and is wide open. Any advise on repairing that would be appreciated.

rjr

**smallengineguy** · 12-10-2007, 10:06 PM

Yes, there is a plunger on that end of the choke cable. If it's seized in, try a little penetrating oil to free it up. If not, yank the cable out, then you may have to pry/drill out the plunger. Also sounds like the spring on the clutch broke.