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  #1  
Old 07-21-2005, 08:10 AM
Carey856 Carey856 is offline
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Join Date: Jul 2005
Location: Marion Ohio
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fc420v Problems

Hello (new guy here)

I have a 48" Scag with the Kawasaki fc420v engine
and im having a problem with keeping it running

It will start up great when its sat overnight and runs really good until it gets up to operating tempature then it dies and will not restart until sitting for quite a while...4-5 hours

I have already tried replacing spark plugs, and
the main coil .......still exactly the same as it was

any Ideas

thanks alot
Craig
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  #2  
Old 07-21-2005, 08:22 AM
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Mowingman Mowingman is offline
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Yoy might be getting a vapor lock condition. Gravely and Kawasaki did a factory bullitin on the routing of the fuel line on some Gravely machines with the same symptoms. See if your fuel line is routed near areas that might get pretty hot.
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Old 07-21-2005, 08:37 AM
Carey856 Carey856 is offline
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Location: Marion Ohio
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okay will do

I forgot to add this I checked for spark after replacing coil


when its at a cool temperature its showing spark

when it gets to operating temp it looses its spark?????


could the ignitor/ (thing bolted to the side of the engine) be the problem?????
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Old 07-21-2005, 11:59 AM
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Restrorob Restrorob is offline
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Quote:
Originally Posted by Carey856
okay will do

I forgot to add this I checked for spark after replacing coil


when its at a cool temperature its showing spark

when it gets to operating temp it looses its spark?????


could the ignitor/ (thing bolted to the side of the engine) be the problem?????
That would be the next step since the coil has been replaced.
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  #5  
Old 08-28-2005, 10:19 PM
jeepman_in_mo jeepman_in_mo is offline
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Mine is doing this too!

I have a Scag walk behind with the Kawi fc420v engine. Mine is doing the exact same thing. I also replaced the coil. After i did it ran for about 15 mins and now it wont restart. i checked the kill switch wire to make sure it wasnt frayed. It's not.

Any ideas fellas?
thanks in advance, Wade
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Old 08-28-2005, 10:41 PM
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Restrorob Restrorob is offline
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Quote:
Originally Posted by jeepman_in_mo
I have a Scag walk behind with the Kawi fc420v engine. Mine is doing the exact same thing. I also replaced the coil. After i did it ran for about 15 mins and now it wont restart. i checked the kill switch wire to make sure it wasnt frayed. It's not.

Any ideas fellas?
thanks in advance, Wade
Are you sure it's not sparking ? what did you set the coil to flywheel air gap at ? It should be 0.12 in. If so you may have a bad igniter also.
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some times the man in my mirror isn't so smart...
"Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!
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  #7  
Old 08-29-2005, 08:54 AM
barnard barnard is offline
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Sounds like possibly valve clearance is too tight.Check valve clearances with engine cold.
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  #8  
Old 09-08-2005, 04:26 PM
barnard barnard is offline
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Did you ever find the problem?
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  #9  
Old 09-08-2005, 05:31 PM
MBDiagMan MBDiagMan is online now
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Since you have eliminate the coil it sounds to me like it is running too rich like a stuck choke or messed up float and needle/seat if that carburetor is equipped with one.

Good luck,
Doc
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