Changing a coil not so easy..
I had to change a coil on my 2003 300x which should be a simple deal. Well now the new coils are larger in size so to change 1 coil you must remove all 6 coils,wiring harness, and grds. Remove the plate that the coils fit in and enlarge the holes so the new coils will fit. You might as well do all 6 while you are at it. I did notice on a Pro xs that the holes are larger so I do not know what year Merc. started to enlarge the holes. Hope this helps..
You may be installing the WRONG coil....
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
Well Don you were right. WRONG coil. It's all my fault though I should have walked out when I told him I had a 2003 Pro Max 300x and he asked if was a Merc. or Yamaha. All Merc. dealers are not created equal..
Your explanation of your motor is a might confusing...No such thing as a Pro Max 300X. You either have a 300 Pro Max, or a 300X....two different motors.Originally Posted by Gamblerman65
"Better to remain silent and be thought a fool than to speak out and remove all doubt."
Actually the 300X is considered a "Pro Max" as indicated on the cowling...
2006 Gambler 2200DC/250XS
Rick Hallenbeck
I have a Simon built 2003 Pro Max 300x..
A little confusing but two different motors. The X is the beast of the two.
Glad to hear you were able to get to the bottom of that.
As for the "ProMax" stuff... there was some cross-naming that occurred between the totally and utterly different models.
Engine SERIAL number is the only consistently accurate identifier.
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
0t652508..
As Manufactured:
Serial#0T652508
Model# 19308A0AH HIGH PERFORMANCE 300X "L" with NO G/C
20"OS DSH,STD BRKT&TRIM,NO G/C
DOB: 11/22/02
Just call it a "300X" (the only thing "ProMax" about it might be a decal or sticker).
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
Thanks Don..
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