Thought this was a Suzuki but I am told that it is a Tohatsu. Tried the Mercury Forum with no result. Perhaps this forum will work. I need the resistance numbers for the Coil, Stator coil and the trigger coil.
Can anyone help.
Thanks Sea Rider.
I am assuming that the ignition coil test value is for the primary. Is there a reading for across the secondaries. I have a Suzuki manual which shows what looks like a similar twin ignition coil and has a measurement between the two secondaries. I can do a pull start DVA test, if my arm holds up. Do you have those readings.
Need to clarify which motor are we talking about. There's a great CC/HP difference compaing a 9.8 against a 9.9, both are different horses. The mentioned electrical parameters corresponds to a 2 stroke Tohatsu 9.9 model. Forgot to state the Ignition's Coil secundary reading which is : 4.1-6.1 Kh.
Electrical Components Outputs :
CD Unit Output (Cranking) 198-220 DVA
Exciter Coil Output (Cranking) 100DVA min
Pulser Coil Output (Cranking) 4.75-5.0 DVA
depending on model, not all 9.9 use Pulser Coils.
Don't troubleshoot with electrical components excerpted from other brands motors, doesn't matter if being same HP, each brand/HP has its unique electrical parameters..
I greatly appreciate everyone's help on this problem. I used the specs provided but nothing seemed to tally. I pressed the issue of trying to find a manual for the 9.9 Merc and finally found one through a friend who is a Merc dealer. The manual is an official merc product, but in my opinion a very inadequate one. It shows only resistance checks, no voltage checks. The resistances in the manual do not match those provided here, which is not unexpected.
Proves the point about not cross matching.
Thanks again guys.
If it's an 07 Merc 9.9, it's really a Tohatsu 9.8 with slightly different carb, and possibly slightly different shift coupled to throttle. What is the actual symptom? There is an exciter and pulser as well as a siamese ign coil. You can check the exciter and pulser for both DVA and ohms. There also ohm tests for the CD, but your analog ohm meter MUST be below 9v (3v is OK) or you may cook the CD. Tohatsu has a great Factory service manual for it, also available in Nissan version; same price:
Covers 8A3 & 9.8A3 4-stroke models Part #: 003-21056-1 List Price (MSRP): $41.67