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How do I change thermostat on 2018 115 prods 4 stroke. 300
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Ted G.
Ted G.
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Vocational, Technical or Trade Scho
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I have a 2002 mercury marine 225 optimax 0T580526. This unit
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Ted G.
Ted G.
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Noel Schembri
Noel Schembri
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I have a 1999 mercury optimax 200 hp, my serial # sticker on
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Jason
Jason
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Charles
Charles
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5,752 satisfied customers
150 mercury 2 stroke serial 0G814787 overheating at idle.
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Charles
Charles
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Charles
Charles
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, my name is***** am having trouble removing the lower
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Tan
Tan
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I am replacing the air compressor on a 2004 mercury optimax
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Charles
Charles
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I have a Mercury Optimax 150 motor and use the flush valve
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Jeff G.
Jeff G.
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Vocational, Technical or Trade Scho
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Have 88 5.7 OMC. Pulled from lake to clean after 4 years in
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Jeremy R.
Jeremy R.
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When I flushed the cooling system of my Mercury outboard (2007
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Noel Schembri
Noel Schembri
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Mercury 150 hp Optimax I have a 150 HP Optimax ( year 2000
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Jeff G.
Jeff G.
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I have a 15 HP Mercury 2 stroke o/b Idles real bad must
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Jeff G.
Jeff G.
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I have changed the water pump impeller, everything looks OK
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Jeremy R.
Jeremy R.
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2005 Volvo/Penta (Gas) 5.0GXi/5.0L (305) V8 (GM) 270 hours
2005 Volvo/Penta (Gas) 5.0GXi/5.0L (305) V8 (GM) 270 hours started over heating Replaced, risers, manifolds, thermostat housing and thermostat, impeller and housing just incase,still over heating took… read more
capt ron 1959
capt ron 1959
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I have a 115 hp mercury I put ear muffs on to test motor and
I have a 115 hp mercury I put ear muffs on to test motor and get ready for the water exhaust was comming out from above but no water stream. what do I check now and can you show me a digram of how to … read more
Mechman45
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I have recently lenghtened my 2000 Optimax 225 from an xl
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Larry B.
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Meet the Experts:

Ted G.

Ted G.

Rigger, Diagnostician

2,678 satisfied customers

40 years boating, Safe boating instruct., Offshore Race promoter, Failure Analysis, Expert Witness

Dominick

Dominick

Marine Mechanic

1,009 satisfied customers

25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified

John White

John White

Marine Mechanic

306 satisfied customers

11 years experience working on outboards, inboards, sterndrives & pwcs

Jason

Jason

Marine Mechanic

23,059 satisfied customers

Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

MerCruiser Certified Technician

11,409 satisfied customers

40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.

Jeff G.

Jeff G.

Marine Mechanic

4,730 satisfied customers

42 years experience, Certified Master Technician, All Major Outboards, Sterndrives, Hi-Performance

Captain Dave

Captain Dave

Marine Mechanic

2,672 satisfied customers

USCG Licensed Captain, 20+ Years Boating, Fishing, Maintenance and Repair Experience

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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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