656 poblem

DaveIN · Jun 22, 2008

Ok, I have a 656 utility that will run fine some times, other time it will run for about a minute and then sputter and die. It always starts right back up then will sputter and die. I think it is a fuel (carb problem). Would you all agree?
thanks in advance. I probably have more info but we put up 400 bales of hay today partly with a 656 that would sputter and die and can't think of anything else to add. Thanks Dave

dwag · Jun 22, 2008

Sounds like trash at inlet of sediment bowl, which you"ll have to unscrew from tank to clean. I take a 2" chunk of brake line(5/16 or 3/8) drill a series of 1/8" holes in the side, crimp the top shut, and install in inlet of sediment bowl assy. Have to drill out inlet to jam/fit standpipe in sediment bowl assy inlet. This will help keep trash out in future.

Hugh MacKay · Jun 23, 2008

Dave: Trash in the sediment bowl inlet is without doubt correct. I'm not sure I'd go for dwag's solution. Yes, by all means clean the tank, then follow the golden rule of tractor operation, "Buy clean fuel and keep it clean."

teddy52food · Jun 23, 2008

Use a piece of gas line hose with a piece of tubing on one end. Siphon the gas out moving the tubing around the bottom of the tank next to the drain (outlet). Siphon the gas in a clear jug or white pail and watch for the junk coming out. This may save pulling the tank or sediment bulb assembly.

rustyfarmall · Jun 23, 2008

Does that one have the electric solenoid fuel shut-off on the carburetor?

DaveIN · Jun 23, 2008

yes it does. I drained the tank the other day through the fuel shut of valve. I think I need to suck out the top though. I dump the sediment bowl often and there is alway something in there.

rustyfarmall · Jun 23, 2008

Cleaning the sediment bowl often is always a good idea, so unless you have some crud or debris floating around inside the tank that can totally block off the fuel inlet, I think the sediment bowl would catch the fine stuff before it could cause any problems, which brings us back to the solenoid.

The solenoid has a tapered pin that fits into the main metering jet. When the ignition switch is turned off, that tapered pin is inserted by spring pressure into the metering jet, totally blocking off ANY fuel flow. When the switch is turned on, the solenoid pulls that pin back out, and allows full fuel flow. If the solenoid is defective, it may not pull that pin out, or may not pull it out completely, or may pull it out slightly but won't keep it pulled out. I think a new solenoid is about $20 to $30, but you may want to assure that you have power to the solenoid also.

bc · Jun 23, 2008

My 2606 had an adjustable solenoid which they don't make anymore. When the solenoid quit working someone disconnected it and just screwed the solenoid out a little. Instead of putting in a new non-adjustable one which also required power to it, I just ordered the manual adjusting screw, nut, and packing. That way I can adjust the main jet if I want to. I also have a fuel shut off valve in line to shut off fuel anyway. These solenoids helped to stop dieseling and leakage through the carb.

You should be able to pull the solenoid and let gas drain into a funnel and gas can for 5 or more minutes. If not you are having some sediment issues with the tank and bulb and/or filter screen plugging (don't know if yours has the inline screen where the line screws into the carb or not). I've been through the tank cleaning and rust issues already.

DaveIN · Jun 23, 2008

Okay the tractor seems to run ok with the choke out. What could this mean?

TX656 · Jun 23, 2008

Had the same type of problem on my 656 gas. It was sediment (mostly rust) that had collected on the brass screen at the carb inlet. Cleaned the screen and carb out, then put a loose magnet in sediment bowl and suspended a thumb size magnet in the gas tank. Up to you how you want to suspend it, obviously don't want any sparks! Pulled and cleaned the magnets after running about 40 gallons through it (they were full of rust particles). Since then no more accumulation and the tractor has never acted like that again.

wolfman · Jun 24, 2008

Could indicate intake manifold leaking-gaskets. when it is running rotten, spray wd-40 or starting fluid mist a half a foot from intake manifold. If it runs smooth with the mist, you've found your problem. If anyone ever tried to start a gas Int with ether, the intake manifold gasket(s) go south.

Farmer Jon · Jun 27, 2008

I have had this same problem with my gas 656. siphoning off the bottom and around the drain clears it up sometimes for years. And then it's back doing it again at the worst times . I've gone to carrying a small length of fuel hose in the tool box that I use to blow into the bottom of the tank after removing sediment bowl. That blows trash away from outlet long enough to get thru chores or get some haying done until you can siphon it out.

656 poblem

DaveIN

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teddy52food

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DaveIN

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