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2015 mercury command thrust 90 hp slipping. I installed new
2015 mercury command thrust 90 hp slipping. I installed new prop hub and after half throttle it slips to 6000 rpm when before this started it maxed out at 5200 rpm. Tried another prop hub and same iss… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
Looks like my son spun the hub or hubs on my mercruiser
Hello looks like my son spun the hub or hubs on my mercruiser duo-prop bravo drive. the boat is a 1999 Sea Ray with stainless steel duo-prop … read more
Noel Schembri
Noel Schembri
Marine mechanic
Diploma
2,715 satisfied customers
I bought a 2016 Marathon Grumman 20 foot pontoon boat. The
I bought a 2016 Marathon Grumman 20 foot pontoon boat. The model is a journey 2085. It has a 75 HP evinrude E Teck outboard. While driving it the prop fell off.I guess the previous owner didn't believ… read more
Charles
Charles
Certified Mercury Tech
5,752 satisfied customers
I own a 90 hr 4 cycle outboard driving a 21 ft pontoon boat
I own a 90 hr 4 cycle outboard driving a 21 ft pontoon boat (both bought new). It is about 8 yrs old. This past weekend while boating I was running at about 3600 rpm when suddenly the prop began slipp… read more
Charles
Charles
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I have a 2000 Suntracker 22ft Regency Pontoon Boat with a 3.0
I have a 2000 Suntracker 22ft Regency Pontoon Boat with a 3.0 I/O. It runs great, there are a few nicks in the prop and I wanted to know the best prop to use for replacement. We do waterski behind the… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
New 40 HP Mercury 3 cyl 4 stroke (replacing 40 HP Mariner 2
New 40 HP Mercury 3 cyl 4 stroke (replacing 40 HP Mariner 2 stroke) on pontoon. Having bad harmonic engine noise. Usually over 2800 rpm. Dealer has tried a solid hub prop ilo of the sliding hub, small… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,730 satisfied customers
New to a Pontoon> What size and pitch prop should I use for
New to a Pontoon> What size and pitch prop should I use for a 2003 Mercury ELPTO 50 HP motor? It's a 2002 Crest II 22' pontoon. Thanks… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
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
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
Our motor is Mercury 2005 40 horse 1B181613 (Used on
Our motor is: Mercury 2005 40 horse 1B181613 (Used on a pontoon boat) The motor revs up fine, but it doesn't seem to go unless you are in low or medium speed. It seems to be slipping in high speed. Do… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
I have a 50 HP Mercury engine on my pontoon. I was going down
I have a 50 HP Mercury engine on my pontoon. I was going down the lake ok when all of a sudden it just slowed down. I checked some things and then retried it. It will start up and it will go into gear… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
I was told my computer went out on my Mercury 60 HP Bigfoot
I was told my computer went out on my Mercury 60 HP Bigfoot motor. This is a authorized dealer. They told me it would be $5000 dollars but it is covered under warranty. Do you see this very often? Als… read more
davesoutboard
davesoutboard
owner
Associate Degree
1,570 satisfied customers
Merc 50 HP on a 19ft Bentley 2007 Pontoon. Prop spin problem.
Merc 50 HP on a 19ft Bentley 2007 Pontoon. Prop spin problem. Replaced Prop 6 momths ago due to Prop spin. Used boat a couple of times did not hit anything however Prop spun again. So replaced Prop ag… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
Hello. My engine runs fine, propeller spins but can only do
Hello. My engine runs fine, propeller spins but can only do 3-5 mph. If you try to push faster, prop rpm jumps to 5,000-6,000 with no increase in boat speed. It is a 50 hp Yamaha motor.… read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
2,672 satisfied customers
I have a 20 ft pontoon boat that came with a 40 hp mercury/force.
I have a 20 ft pontoon boat that came with a 40 hp mercury/force. I swapt the motor with a 120 hp elpt mercury/force with a 21 pitch prop. Its a dog. What is the right prop?… read more
capt ron 1959
capt ron 1959
Owner/Marine Mechanic
Vocational, Technical or Trade Scho
348 satisfied customers
I have a 48hp Evenrude on a 22 pontoon boat. The motor runs
I have a 48hp Evenrude on a 22' pontoon boat. The motor runs fine most of the time but when running at approx. 5,000 rpm every few minutes the boat will shudder. I can't tell if it is an electrical pr… read more
davesoutboard
davesoutboard
owner
Associate Degree
1,570 satisfied customers
Had Hub slip replaced prop 2 months ago. Boat ran great.
Had "Hub slip" replaced prop 2 months ago. Boat ran great. Now two months later I go out RPM's race Hub Slip again? Drop RPM's everything is good. 50 HP Mercury 2007. I bought a standard prop not stai… read more
Dominick
Dominick
Marine Mechanic
Vocational, Technical or Trade Scho
1,009 satisfied customers
My 9.9 HP Mercury outboard 1998 runs at low RPM but as ...
My 9.9 HP Mercury outboard 1998 runs at low RPM but as soon as revved up the motor will increase RPM but the boat will not accelerate ?… read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
2,672 satisfied customers
I have a 90 HP Mercury outboard motor on a 24 ft pontoon ...
I have a 90 HP Mercury outboard motor on a 24 ft pontoon boat. We have not used the boat very often. It used to run very weel and would go fast. Now after sitting for awhile it only runs about half as… read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
2,672 satisfied customers
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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

22,043 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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