airforcemom
newbie
Reged: 11/04/09
Posts: 4
Loc: Michigan
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Craftsman Model 247.886640 Engine # 143.025001
My brother-in-law gave us this snowblower because it quit working and it was easier for him to buy a new one and he can afford it.
We would love to fix this so we could have a nice snowblower.
Husband said he re-done the carburator, new gas line, put in needle value, new seal for bowl and a new solid state ignition ( I have no idea what any of this means) I'm just doing the typing. He said it gets good spark on the plug and is getting gas to carb.
It is very very hard to start and if he does finally get it started it stops running in about 30 seconds. If anyone has any helpful inexpensive suggestions I would love to here them so I could pass them on to hubby.
The shop he worked at for just over 20 years recentlty went bankrupt and closed  so we have little money but lots of time. Thanks in adavance Deb
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Jeff_McMaster
Handyman
Reged: 09/06/02
Posts: 691
Loc: Monmouth, IL
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If it is quiting very soon after starting, there is most likely still some gunk in the carb. I would take the carb off and reclean it paying special attention to the small orfices and holes to insure that they are all clear. Use a piece of tag wire to clean them out.
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have been a mechanic since the late 50's.
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Bob_Q
Carpal Tunnel
Reged: 06/28/01
Posts: 9285
Loc: Albany area,New York
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Jeff's probably answered correctly,but he could also check for restrictions in the fuel line and tank. In many cases there is a screen inside the tank to keep junk out of the carburator. If that plugs or starts to,the engine won't be supplied with enough fuel. If he thinks the carb is definitely the problem,and re-cleaning it the way Jeff described doesn't work,there is a product called Sea-Foam,sold at auto parts stores,that I understand works very well.
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Those Libs Go Crazy When They Lose
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JasonB
Sharp Shooter
Reged: 04/27/04
Posts: 7414
Loc: Cape Spencer, New Brunswick, C...
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And when ya check the carb..... The likely culprits are the small holes drilled thru the side of the bowl nut (brass bolt that holds on the float bowl, it's actually the main jet) in the threaded area. Sometimes there are very fine holes in here, hard to see. Look closely!
J
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er, somethin'....
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airforcemom
newbie
Reged: 11/04/09
Posts: 4
Loc: Michigan
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Hubby said he has done the above suggestions over and over, all holes were cleaned and re-cleaned with a piece of tiny diam. copper wire before he had me e-mail the group. Also already checked fuel tank. He's quite good about cleaning things so if he has cleaned time and time again ... he thinks it must be something else.
Edited by airforcemom (11/06/09 06:51 PM)
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CabinConnection
Big Foot
Reged: 01/20/04
Posts: 16932
Loc: The Indianhead's Left Nostril....
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First things first... Drain ALL the gas, including from the carb bowl, and replace with FRESH from the pump.
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airforcemom
newbie
Reged: 11/04/09
Posts: 4
Loc: Michigan
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The gas is 3 days from the pump. He took the top of the cylinder head off it is getting gas to the front part of the intake value but no gas to the spark plug. Plug is completely dry. Any other suggestions?
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airforcemom
newbie
Reged: 11/04/09
Posts: 4
Loc: Michigan
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Ok update ... any more ideas' guys???
Hubby ordered and put on a new head gasket ... now he is getting gas to the spark plug area,  but he said to tell you when he puts his finger over the hole ( I assume where the spark plug was) he is getting no compression. This free snowblower is starting to get a little more expensive to repair then we thought it would be. Being that he is still unemployed any help you guys could give would be greatly appreciated ... as the local repair guy is very expensive. 
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JasonB
Sharp Shooter
Reged: 04/27/04
Posts: 7414
Loc: Cape Spencer, New Brunswick, C...
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He should check valve clearances, and if they check out, he'll have to pull the head and look inside: Are valves stuck or burnt, is the piston holed, are the rings OK, is the cylinder scratched?
It's rare for a compression-less small engine to be economical to repair. It's usually the first thing a person checks (just by pulling the starter slowly and feeling that there is compression, if you follow)....
J
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er, somethin'....
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CabinConnection
Big Foot
Reged: 01/20/04
Posts: 16932
Loc: The Indianhead's Left Nostril....
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Quote:
It's usually the first thing a person checks (just by pulling the starter slowly and feeling that there is compression, if you follow)....
Yeah... Was it ever checked initially?
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