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My 2019 Mercury 60 HP 4 stroke is overreving at 6500 - 6700
My 2019 Mercury 60 HP 4 stroke is overreving at 6500 - 6700 rpm. Current prop is a 10.5 x 13 aluminum. What can I do to lower the rpm … read more
Jason
Jason
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Vocational, Technical or Trade School
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I have a new Mercury 25 4 stroke outboard motor. It revs up
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Ted G.
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Motor will run fine, I'll stop and restart and all is good.
Motor will run fine, I'll stop and restart and all is good. After about 3 start attempts, motor will stall and cannot restart. After a few hours motor will restart with same same problem stated above.… read more
Charles
Charles
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I have a 2018 Mercury 150hp 4 stroke that has less than 15
I have a 2018 Mercury 150hp 4 stroke that has less than 15 hours on it. The other day after having it on water for 5 hours it starting shaking tremendously. To the point that I thought it was going to… read more
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Charles
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I have a 2005 mercury 15 HP short shaft salt water engine.
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Charles
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I have a 2003 50 HP Mercury Bigfoot motor on a 20 foot
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Charles
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I have a 6 hp Tohatsu 4 stroke, banged a couple rocks on a
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Tan
Tan
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I have a 2008 167 Cutter sportster with an 2008 Mercury 50
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my 2005 mercury 75 hp 4 stroke run s and revs like a swiss
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Charles
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i have a 2008 or 09 2 stroke, 115 HP yamaha. the owners manual
i have a 2008 or '09 2 stroke, 115 HP yamaha. the owners manual says the rpms should be 4500 - 5500. The dealer says they like to see 5500 - 5800. I've done some reading online about it having a rev l… read more
Jeff G.
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I HAVE A MERCURY 9.9 MLA4ST 1996 SN 0H005430 WITH A PROPELLER
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Jason
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I have a 2006 Mercury 60 hp four stroke outboard. On my last
I have a 2006 Mercury 60 hp four stroke outboard. On my last fishing trip I throttled to WOT and the boat felt really sluggish. It would top out at about 4800-5100 rpm. About a mile down river the rpm… read more
Tan
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hi. I have a mercury 9.9 4 stroke newer. running good on low
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I have a year 2000 Optimax 115 Hp outboard (V6 2.5 liter)
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Jeff G.
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I have a 50 hp 2008 mercury outboard 2 stroke what can I do
I have a 50 hp 2008 mercury outboard 2 stroke what can I do to get more power out of it without blowing it up.Just looking for more top end… read more
Whitecap36
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I have a 2007/2008 Yamaha 200 Hp VMax two stroke. I purchased
I have a 2007/2008 Yamaha 200 Hp VMax two stroke. I purchased it at the coast (sea level) and run it at about 1300m above M.S.L. The throttle respnse is terrible and there is a flat spot on take off t… read more
Jeff G.
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i have a 1991 200 hp mercury outboard that i took the lower
i have a 1991 200 hp mercury outboard that i took the lower unit off to put in a new impellar i cant get the lower unit back on any suggestions how to line up drive shaft so i can bolt it back togethe… read more
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Meet the Experts:

Ted G.

Ted G.

Rigger, Diagnostician

3,111 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

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

Jason

Jason

Marine Mechanic

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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.

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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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