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I have a 2012 merc 50hp 4 stroke that will only go to 5000
I have a 2012 merc 50hp 4 stroke that will only go to 5000 rpm on start up then will lose power after a couple of minutes down to 4200rpms. … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
18,730 satisfied customers
Yamaha 115 HP Four Stroke. Engine devlopes only 5200 RPM's
Yamaha 115 HP Four Stroke. Engine devlopes only 5200 RPM's at full throttle with top speed under 30 mph. Prior to problem Engine hit 6000 RPM's and would do 50 - 55 mph at full throttle. I put in a ga… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
18,730 satisfied customers
I have a 07 merc 50 hp Efi 4 stroke, on a boat I just
I have a 07 merc 50 hp Efi 4 stroke, on a boat I just purchased That I'm told only has 35 hrs on it, the boat had been winterized at a shop then sat for a full season of no use, the owner then sent it… read more
Charles
Charles
Certified Mercury Tech
5,113 satisfied customers
I'm pat we have a sea ray 205 with a mercruiser 5.0 mpi
Hi I'm pat we have a sea ray 205 with a mercruiser 5.0 mpi has no power down the boat doesn't over heat runs smooth and when gets up too speed it's fine… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
18,730 satisfied customers
I just bought a 2003 glastron 21 foot bow rider with a 5.7
I just bought a 2003 glastron 21 foot bow rider with a 5.7 merc inboard and a bravo 1 outdrive. what would be the best prop for this boat. It had a 5.0 which has been replaced with a 5.7 EFI.… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
I have twin 60 hp mercury outboards on the back of a Twin Vee
I have twin 60 hp mercury outboards on the back of a Twin Vee 20 foot cat. I currently have four blade propellers stamped 48-878614.13p. The engines are NOT BIGFOOT MODEL. What size is the best three … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
I have a 2001 Bass Pro Targa 17 Tracker with a 90hp four stroke
I have a 2001 Bass Pro Targa 17 Tracker with a 90hp four stroke mercury outboard. The propeller delivered with the boat is a 13.25 X 17. Boat weight approximately 2618 pounds. I cruise at 35mph @ 4,00… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
I have a 50 hp four stroke suzuki outboard. It has a 12 pitch
I have a 50 hp four stroke suzuki outboard. It has a 12 pitch prop that at wot will turn just over 6000 rpm's. The last time out the wot was only about 5400 rpm's and with out changing the throttle th… read more
orcamarine
orcamarine
Proprietor
Vocational, Technical or Trade Scho
7 satisfied customers
i have a 1985 evinrude 140vro , im tryin to size a prop for
i have a 1985 evinrude 140vro , im tryin to size a prop for it.... do you know what the max recomended rpm's are for this motor? thanx Glen… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
i hsave a 96 crest 18 ft pontoon with a 70 hp johnson. the
i hsave a 96 crest 18 ft pontoon with a 70 hp johnson. the helm is located at the rear. the boat is rated 1900 lbs/75hp . when i am towing a tube, the majority of the outboard shaft is under water and… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
18,730 satisfied customers
I have a 1990 Sea Ray that i purchased used this year. It has
I have a 1990 Sea Ray that i purchased used this year. It has a 150 Merc Outboard. The boat is a little sluggisg getting skiers out of the hole. The propeller has three blades. Would a blabe with four… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
18,730 satisfied customers
I have a 16 ft. aluminum Legend fishing boat (side console).
I have a 16 ft. aluminum Legend fishing boat (side console). The hull Weight is 640 lbs. Maximum capacity is 1,220 lbs. The outboard engine is 25 HP EFI 4-Stroke. The engine's full throttle RPM range … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
18,730 satisfied customers
Dont understand pitch on a prop, what pitch will give me the
Don't understand pitch on a prop, what pitch will give me the best speed, and which for the best torc?… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
We use twin 3 # 250 HP outboard engines to run our ferry made
We use twin 3 # XXXXX HP outboard engines to run our ferry made of Aluminum with the following dimensions: Lenght 50 feet Width 15 feet Draft 1 foot Weight 8 tons We tend to lose the pinion, forward g… read more
Noel Schembri
Noel Schembri
Marine mechanic
Diploma
1,762 satisfied customers
I own a 60 HP Suzuki pushing a 71229 40HP Outboard Jet. Unlike
I own a 60 HP Suzuki pushing a 71229 40HP Outboard Jet. Unlike props a jet output is directly related to the RPM of the Motor. At full throttle I am turning 5,000 RPM. I have noticed other identical b… read more
Jason
Jason
Associate Degree
210 satisfied customers
Why would you drop 6 to 8 miles per hour after replaceing the
Why would you drop 6 to 8 miles per hour after replaceing the seales in the out drive? Have a 26' Formula Bow Rider with 405 Engin.… read more
capt ron 1959
capt ron 1959
Owner/Marine Mechanic
Vocational, Technical or Trade Scho
348 satisfied customers
we have a 2004 bennington pontoon with a mercruiser 115 hp
we have a 2004 bennington pontoon with a mercruiser 115 hp efi outboard. today we notcied the tach was reading 6000 rpm (i really don't think the motor was reving @ 6000) and it ran more like a speed … read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
hi larry . my question is i have my 50 hp mercury 2009 done
hi larry . my question is i have my 50 hp mercury 2009 done 3 hours only fixed on my light boat 550 lbs only and am getting max 4000 rpm and on the engine spesifiction shows 5500-6000 rpm so is it (th… read more
Steve Sr.
Steve Sr.
No Title
High School or GED
79 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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