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2003 mercury optimax 200hp outboard Engine Serial #:
2003 mercury optimax 200hp outboard Engine Serial #: ot794763, psi Guage at idle between 20 and 30 psi, is this normal? Water/pee is very strong and no warn siren. The only other problem is my trim Gu… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
17,310 satisfied customers
I have a 2002 Merc 225 Optimax with Smartcraft V 2.21. I had
I have a 2002 Merc 225 Optimax with Smartcraft V 2.21. I had to replace the trim sensor and need to recalibrate the trim settings so the guage reads correctly. Nothing in my Smartcraft owners manual i… read more
Charles
Charles
Certified Mercury Tech
5,156 satisfied customers
I have a 2005 225 optimax with 1 smartcraft Tachometer. It
I have a 2005 225 optimax with 1 smartcraft Tachometer. It has no speedometer. I am trying to get it to show me the fuel remaining but it keeps coming up with error message. Do I need the speedometer … read more
Charles
Charles
Certified Mercury Tech
5,156 satisfied customers
I have a 2005 225 optimax and it has 1 smartcraft Tachometer
Hi. I have a 2005 225 optimax and it has 1 smartcraft Tachometer and no speedometer. It is a version 7 gauge. Everything works fine apart from I can not get the fuel remaining working. It will tell me… read more
Charles
Charles
Certified Mercury Tech
5,156 satisfied customers
I have a mercury 225, on the lake I get 4 short beeps? 225
I have a mercury 225, on the lake I get 4 short beeps? … read more
Charles
Charles
Certified Mercury Tech
5,156 satisfied customers
Does my 1999 2 stroke Mercury Optimax 225 hp outboard motor
Does my 1999 2 stroke Mercury Optimax 225 hp outboard motor have a Fuel Filter under the cowling, and if so, where is it and can I replace it myself? Each Spring I change the fuel filter / water separ… read more
Charles
Charles
Certified Mercury Tech
5,156 satisfied customers
Got two 2007 Mercury optimax 225s. When they reach 2500 rpms
Hi Charles. Got two 2007 Mercury optimax 225s. When they reach 2500 rpms alarm goes off and govenor kicks in. This happens for both the same way. Any ideas what's going on?… read more
Charles
Charles
Certified Mercury Tech
5,156 satisfied customers
I have a 2003 135 hp Optimax ser # ***** Recently a Smartcraft
I have a 2003 135 hp Optimax ser # ***** Recently a Smartcraft (ver 3.04) gauge and CAN harness (Part # *****) were added. The correct end of the CAn is pluged into the motor. The Smartcraft gauge, up… read more
Charles
Charles
Certified Mercury Tech
5,156 satisfied customers
I have a Fountain 29 foot open fish. Currently it has a pair
I have a Fountain 29 foot open fish. Currently it has a pair of Mercury 225 OffShore out boards. I'm thinking about changing them out for a pair of low hours 2010 225 Optimax engines. What i would lik… read more
Charles
Charles
Certified Mercury Tech
5,156 satisfied customers
Have a fountain 38 lx with triple 275 Verados with 225 hrs.
Have a fountain 38 lx with triple 275 Verados with 225 hrs. The oil preasure on one at operating temp and 4000 rpm has fallen to 45lbs the others 2 are at 55 to 60 pounds .Oil levels are fine and ther… read more
Joe
Joe
Owner Kingsland Auto & Marine Services
Vocational, Technical or Trade Scho
1,385 satisfied customers
Hello, I have 3 mercury 225 optimax on a 38 foot fountain.
Hello, I have 3 mercury 225 optimax on a 38 foot fountain. I purchased the boat not long ago and basically I can't go out one time in the ocean without endless beeps and alarms going off. I have the m… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
17,310 satisfied customers
I have a 2002 225 optimax. Ran very good this summer in the
I have a 2002 225 optimax. Ran very good this summer in the keys. I have on my lake now. Has only about 1/2 power. I replaced the water separater filter upon the suggestion of a mechanic/ friend with … read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
I have a 2003 Mercury 140HP Saltwater Series - 2 stroke. I
I have a 2003 Mercury 140HP Saltwater Series - 2 stroke. I also have a Navman 8120 plotter that is smartcraft compatible. Problem is I don't think this motor provides smartcraft...doesn't appear to an… read more
Whitecap36
Whitecap36
Service Manager/Technician
Vocational, Technical or Trade Scho
1,545 satisfied customers
do i have to use smartcraft gauges or can i use analog on my
do i have to use smartcraft gauges or can i use analog on my bassboat with a 2003 225 optimax and if so i need a wiring schematic controls to motor to gauges… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
17,310 satisfied customers
I have a Mercury optimax(NNN) NNN-NNNNwhich at idle smartcraft
I have a Mercury optimax(NNN) NNN-NNNNwhich at idle smartcraft shows .2 psi water pressure and 5000RPM around 12. Have changed water pump,poppet valve and seals ,water pressure sensor and checked t st… read more
Jeremy R.
Jeremy R.
MarineTechnician
9,020 satisfied customers
I have a a 2003 Mercury Optimax 225 Hp. The motor starts and
I have a a 2003 Mercury Optimax 225 Hp. The motor starts and idles great. However, when I get to 4,000 RPM and try to go faster the motor starts to stumble and miss. I have a little water in the tank,… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,729 satisfied customers
I have got a 2004, 225 optimax, about 2 weeks ago an alarm
I have got a 2004, 225 optimax, about 2 weeks ago an alarm indicated that water had got in the fuel system. the boat has an inline fuel filter/water separator prior to the motor which i checked and di… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,729 satisfied customers
was given mercury sc 1000 monitor-79-879896-k2,also rpm x 100
was given mercury sc 1000 monitor-79-879896-k2,also rpm x 100 mercury79-859 067 cannot find any product manual on these guages,have no idea what they do or work thank you lorne murray p,s. tried inter… read more
John White
John White
Marine Mechanic
Vocational, Technical or Trade Scho
306 satisfied customers
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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