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Case Tractors Discussion Forum
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Case 430 Timing

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Dave F.

05-03-2005 09:59:36




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I have an 430 with an gas engine, at times it doesn't want to start & at times it will back fire while starting, I put new points,condenser ,wires, plugs in. point gap at 0.20 I think the timing is advanced, can you use an timing light to set timing? also what should the timing be set at? Thanks Dave F.




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jack McCormick

05-16-2005 19:17:45




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 Re: Case 430 Timing in reply to Dave F., 05-03-2005 09:59:36  
Since you are dealing with the electrical system,
Can you tell me this... does the positive terminal of the battery go to the starter or does it go to the frame. Is a Case 430 a negative or positive ground. I am replacing the battery on a 430 and I don't want to mess it up.
Thank you



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Dave F.

05-17-2005 07:47:57




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 Re: Case 430 Timing in reply to jack McCormick, 05-16-2005 19:17:45  
Jack, My 430 is wired negative ground, although my wiring is pretty ratty. ( next project) it still charges ok, at least the Gen lite goes out. hope this helps Dave F.



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Roger (Mi)

05-04-2005 13:00:14




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 Re: Case 430 Timing in reply to Dave F., 05-03-2005 09:59:36  
Static timing (not running) is as Tom said. Put the flywheel timing mark at 5 degrees ATDC, attach a continuity tester to the points and ground, loosen the distributor, turn it in the opposite direction of the rotor direction until the points open and there is a loss of continuity. It's a good way of setting initial timing. Most (myself included) will want to use a timing light. The timing is too far advanced if the motor kicks back as you try to start it. If it dosent's, then too far advanced is not a starting issue. Too far retarded can cause a starting problem, so you need to get the timing correct. Don't rule out a bad condenser. A lean gas mixture can cause a motor to backfire during starting, and so can sticky intake valves. By the "process of elimination", you should discover the problem. Good luck.

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Tom (Ks)

05-03-2005 18:34:55




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 Re: Case 430 Timing in reply to Dave F., 05-03-2005 09:59:36  
My tech manual tells me to run the engine at 1750rpm and set the timing at 5 degrees after top dead center (ATDC) or 6 degrees before TDC at 2000rpm. This does not sound right to me but you can try it. Most engines I have worked on set at about 5 BTDC at idle and about 25 BTDC at wide open.



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