Author Topic: 1977 750K Won't Start  (Read 780 times)

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Offline cphlegar

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1977 750K Won't Start
« on: May 14, 2012, 10:39:26 AM »
No spark from brand new plugs. Ran OK last fall. What are the next few things to check?

Thanks,
Chris in Houston

Offline knowsnothing

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Re: 1977 750K Won't Start
« Reply #1 on: May 14, 2012, 11:30:34 AM »
1. Battery
2. Fuses
3. Loose wire connection
4. Wait until we hear about 1-3
1978 CB750k Green - 811 engine
1978 CB750k Blue - for sale
1974 CB375F Faded Black - had to have that 6th gear
1976 CB400F Red - in many pieces
1973 CB350F TBD - in many pieces

bollingball

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Re: 1977 750K Won't Start
« Reply #2 on: May 14, 2012, 11:58:09 AM »
Check the 15a. main fuse first if it is OK then have your key sw. on. The kill sw. to run And check for 12v at the black/white wire at the coil. That black/white comes from the stop/start sw. or what some call the kill sw.. The kill sw. gets its power from a black wire. All black wires are switched power wires. That is they get hot when the key sw. is in the run or start position. The key sw. gets its power from the red wire coming from the 15a main fuse. If you get this done post back. Please post back even it you fix it so others will know if they have the problem. If all this checks good but it still will not fire post back and we will have to check further. Hope this helps

Ken

Offline cphlegar

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Re: 1977 750K Won't Start
« Reply #3 on: May 14, 2012, 12:20:23 PM »
Thank you. I'll check those and get back.