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I just went through the break in on a new 90 4 stroke. i
I just went through the break in on a new 90 4 stroke. i slowly increased throttle to full throttle and the engine would not go above 5200 rpm. It reached 5300 rpm and was still about 1/4 throttle rem… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
23,069 satisfied customers
Have a new ranger pontoon with 90 hp 2020 4 stroke only
Have a new ranger pontoon with 90 hp 2020 4 stroke only reaches 20 mph and 5200 rpm it's a 20 ft pontoon total length 21 11 … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
23,069 satisfied customers
Have new battery in boat, ran good the other day. Went to
Have new battery in boat, ran good the other day. Went to start it today and the battery was dead. Recharged it and it started. Half way around the lake the voltage dropped to nothing and then it died… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
23,069 satisfied customers
Just bought new 16 ft Apex Quest pontoon with a T 25 yamaha
Just bought new 16 ft Apex Quest pontoon with a T 25 yamaha 4 stroke. Motor shaking captain's console at idle so much my glasses fall off. Dealer says that's normal for that motor? Really? Is this nor… read more
Charles
Charles
Certified Mercury Tech
5,752 satisfied customers
Need some advice on a pontoon boat prop. I have a 2015
Hi! Need some advice on a pontoon boat prop. I have a 2015 sylvan s3 pontoon with a 150 mercury 4 stroke engine. My wot is 4300 with a 3 blade aluminum 15.25 x15 prop. max speed 29 MPH. I know the max… read more
Charles
Charles
Certified Mercury Tech
5,752 satisfied customers
115 HP 4 stroke mercury outboard 5000-5500 rpm, sounds
115 HP 4 stroke mercury outboard 5000-5500 rpm, sounds great, formerly runs @ 38mph top speed, 13' x 19" SS prop, prop hub is intact, new power trim assembly, no extra weight in 17' aluminum v-hull, t… read more
Charles
Charles
Certified Mercury Tech
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I will buy a new boat and engine soon. I have a 1994 Force
I will buy a new boat and engine soon. I have a 1994 Force which performs adequately. The dealer said I would be happy with the Merc. 115 four stroke. I am concerned about starting power to snatch a s… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
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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
11,409 satisfied customers
I have a 2005 115 hp 4 stoke EFI engine. It doesnt seem to
I have a 2005 115 hp 4 stoke EFI engine. It doesn't seem to deliver the performance I think it should. It came to me with a 17" prop and would only tach about 4800 rpms. I changed to a 15 and it gets … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
23,069 satisfied customers
i have 115 mercury four stroke efi 2006 dies out under load
i have 115 mercury four stroke efi 2006 dies out under load at 2400 rpms please help will idel and hold rpms in nutrel on problem under load dies down and shakes had problem four two years changed all… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,730 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 School
23,069 satisfied customers
bought a 2007 starcraft pontoon boat new with a 115 4 stroke,
bought a 2007 starcraft pontoon boat new with a 115 4 stroke, first year we got between 5500 & 5800 rpm's under a load pulling a tube, now we can only get 4900 to 5000 rpms and it runs about 5 mph slo… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
I have a 2001 Mercury 250XL EFI motor on my 26 angler panga
I have a 2001 Mercury 250XL EFI motor on my 26' angler panga boat...I'm running a 19P Rev 4 prop...going out in the morning I'm turning 5800 to 6000 rpm depending on trim setting....on the way back in… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,730 satisfied customers
Prop question I have a 2009 War Eagle 1648 (aluminum semi-v)
Prop question? I have a 2009 War Eagle 1648 (aluminum semi-v) on which I just mounted a 2009 Mercury 25 HP 4 stroke short shaft motor (the transom is 16"). I took the motor out for its initial run and… read more
Jason
Jason
Associate Degree
210 satisfied customers
I have a 2006 115 four stroke mercury on a 30 foot pontoon
I have a 2006 115 four stroke mercury on a 30 foot pontoon boat, I am selling the boat and a potential buyer has asked how many hours on the motor there is not an hour meter on the boat is there one l… read more
John White
John White
Marine Mechanic
Vocational, Technical or Trade Scho
306 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
Having problem with my RPMs falling from 6000, to below 5000
Having problem with my RPM's falling from 6000, to below 5000 wile driving. 2001, 115 Mercury Four Stroke EFI.… read more
Mechman45
Mechman45
Vocational, Technical or Trade School
152 satisfied customers
Hi. I have a 2006 Mercury ( Tohatsu) 25hp 4 Stroke outboard
Hi. I have a 2006 Mercury ( Tohatsu) 25hp 4 Stroke outboard on a 19 foot pontoon boat. The recommended rpm is 5600-6000, I only achieve 5200-5400 with the 10 1/4" by 8"Pitch quick silver prop I have. … read more
Jason Forsberg
Jason Forsberg
Outboard Marine Mechanic
Vocational, Technical or Trade Scho
531 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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