Sorry im on my other work place...ok
https://cimg2.ibsrv.net/gimg/www.off...7c789ebb07.jpg
This is my work place...american engines are my hobby

Allso i noticed that when i turn the distributer the engine won't pick up rpm...ill have to check my timing but the problem is thet ewerithing is rosted and i can't see advance....i only see three litle teeth and a big one...and 0 on my crank pully
https://cimg0.ibsrv.net/gimg/www.off...e486b5db97.jpg
My boat
https://cimg8.ibsrv.net/gimg/www.off...e0cffcd115.jpg
My boat

If your timing tab looks exactly like this, thrse are the btdc #’s vs indentions
Don’t pay attention to that 6 poiting at timing tab. That’s a reference to just the timing tab itself for that page in the manual.

https://cimg0.ibsrv.net/gimg/www.off...859032193.jpeg

Yes that is it...the big gap is 0 so i put mine betwene 8-12...but i felt it when rpm started to raise...the other engine does not have that but it von't response when i turn the distributer...no rpm raise

Hy crew...can sombody tell me what are the proper spark plugs heat value for mercruiser 7.4 n/a

MR43T for most of them. So, #43’s for acdelco plugs. If using NGK plugs, many people use #6 heat range.

SB you are the best:ernaehrung004:we youse ngk...ill look at it tomorow...we run on 95 oktane fuell..does that make a differenc

just run 87 if you have it no need for 95, use the extra cash for beer...........:D

sorry european law sez only 95....and 100...

Fuel
 

We don’t measure fuel # the same in Europe as in US. US87 (Mon) and Euro95 (Ron) are nearly the same. Ron, Mon, Pon,
In Europe we usually measure in Ron and in US you measure in Mon.

//Peter