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I have a 2000 Hewes Bonefisher 18 powered by a 1999 Yamaha
I have a 2000 Hewes Bonefisher 18 powered by a 1999 Yamaha 130. WOT is 4700 rpm and hole shot is poor. Thinking it is the prop which is a 3 blade SS 13.25x19. The prop is probably ten years old, decen… read more
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I have a 2003 Mercury 115 4 stroke. When you get planed and running down the river the po
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1996 smoker craft stiletto 16ft 1996hp mercury 90hp 2 cycle
1996 smoker craft stiletto 16ft 1996hp mercury 90hp 2 cycle 13in propeller best choice of degrees… read more
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I have a 2005 Sailfish 236 with a 2005 Yamaha 250 HPDI running
I have a 2005 Sailfish 236 with a 2005 Yamaha 250 HPDI running the original prop with about 300 hours on it. Performance has always been satisfactory however it seems time to replace the original prop… read more
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I have a 1987 Bayliner Ciera Sunbridge 22ft new to me with
I have a 1987 Bayliner Ciera Sunbridge 22ft new to me with a 4 cilinder volvo inboard motor it seems to run well with 2 on board I get a little over 4500 RPMs with 4 I get about 3500 RPMs could it be … read more
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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
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I have a 40hp autolube yamaha two stroke (about 5 years old)
I have a 40hp autolube yamaha two stroke (about 5 years old) on a 4.2m boat. At the coast it runs fine but here in JHB on high altitude it feels week. What can I do to get more power. (I use it to pul… read more
Jeff G.
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I had purchased a used pontoon boat ( 20) last year with a
I had purchased a used pontoon boat ( 20') last year with a 50 h.p. 2 cycle 4 cyl. mercury for power. I sometimes thought it seemed as though i was running a lot of RPM and not much speed. How do i de… read more
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I have a Caravelle 242LS that I just bought from Texas, A fresh
I have a Caravelle 242LS that I just bought from Texas, A fresh water boat. I live in NJ so it will have a difrent life. The boat has a Volvo Penta Gi-e and runs like a champ except for the prop. It h… read more
James
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I have a 19 foot aluminum G3 Jon boat with a 115 Yamaha 4 stroke
I have a 19 foot aluminum G3 Jon boat with a 115 Yamaha 4 stroke motor. I have three batteries: 1 starting and 2 trolling motor (24volt system). I cannot get rid of a porpoising action at all speeds. … read more
K. Kergan
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I have a2008 Glastron 175 with a mercruiser 3.0 alfa1, 2.0
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I have a 2007/2008 Yamaha 200 Hp VMax two stroke. I purchased
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hello i have a 1984 19 fibrglass boat with a mercruiser 140
hello i have a 1984 19" fibrglass boat with a mercruiser 140 i use the boat within my state at various altitudes i put a 16x19 prop on at 5000 ft it runs great i was told to use a 17p for higher altit… read more
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I have a 115 hp Yamaha out board (2007 model)... I have to
I have a 115 hp Yamaha out board (2007 model)... I have to get a new propeller and the one I have does not have any numbers that help me idenify the type of propeller and the pitch. Can anyone help me… read more
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My daughter has a 93 Mastercraft Prostar 205 with a Ford 351
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My 26 center console was factory rigged with twin 200 Yamaha
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I have a 24 ft pontoon boat with a 2005 90 hp outboard ,the
I have a 24 ft pontoon boat with a 2005 90 hp outboard ,the engine cavitates alot some times at 3500 rpm somtimes higher ,cruising at 3000 to 3500 for no reason at all the rpms start climbing. the eng… read more
Dominick
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What size prop should be use on a 90 hp. yamaha on an 18 ft.
What size prop should be use on a 90 hp. yamaha on an 18 ft. aluminum Xpress flats 18cc for speed and preformance. What prop usually comes with the 90 hp yamaha ?… read more
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Meet the Experts:

Dominick

Dominick

Marine Mechanic

1,009 satisfied customers

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

Ted G.

Ted G.

Rigger, Diagnostician

704 satisfied customers

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

John White

John White

Marine Mechanic

306 satisfied customers

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

Jason

Jason

Marine Mechanic

18,508 satisfied customers

Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

MerCruiser Certified Technician

11,264 satisfied customers

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

Jeff G.

Jeff G.

Marine Mechanic

4,729 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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