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| 6HP Seahorse electrical ? |
| Author |
Message |
    
Dale M
Visitor
| | Posted on Friday, May 02, 2008 - 08:56 pm: | 
|
I have a 6 HP Seahorse Model 6R75-R, so I suspect its a 1975 motor. One of the cylinders seems to cut out at lower RPM's. When you rev it, it'll come back. Seems like it looses spark on a cylinder. Put new plugs in it and same result. Any electrical checks I can do to see if I have something going bad??
Thanks,
Dale |
ikia
Visitor
| | Posted on Friday, May 02, 2008 - 09:06 pm: |
|
Pull the flywheel, remove coils and inspect for cracks / burn thru and grounding to magplate.Very. very common fault.One simple test is to REDUCE plug gap to 0.020" to see if running improves.The other test is spark output --- A good coil can jump a gap of 1/4" or more. |
Dale M
Visitor
| | Posted on Friday, May 02, 2008 - 09:20 pm: |
|
Thanks ikia. I'll do checks tomorow. |
Dale M
Visitor
| | Posted on Monday, May 05, 2008 - 11:51 am: |
|
Well, it runs much better at low RPM with pluggs gapped around 0.020" vs around 0.030", which is where I found them.
If this indicates a weak coil, but motor runs OK with them gapped tighter - is there a problem running it like this till coil(s) die?? ANy other way to validate a bad coil or at least disquish between good / bad, like a resistance check or something?
Thanks for the input.
Dale |
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