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I have a 1978 15 hp tiller. Motor runs fine but yesterday
I have a 1978 johnson 15 hp tiller. Motor runs fine but yesterday developed a big problem. Anything past idle when in gear and the engine starts running like it is cavitating and doesnt get any speed.… read more
Charles
Charles
Certified Mercury Tech
5,519 satisfied customers
T a submerged log today and it stalled engine. 50 hp
Hit a submerged log today and it stalled engine. Johnson 50 hp outboard 1999. Now there is an intermittent clunking sound at idle in neutral. Because of that, I did not try to increase throttle or eng… read more
Charles
Charles
Certified Mercury Tech
5,519 satisfied customers
1981 25 hp model 25tec on a 14' 1950 runabout. 1 - what is
1981 Johnson 25 hp model 25tec on a 14' 1950 wood runabout. 1 - what is the right prop, what is pitch on the standard prop. 2 - what size shear pin does it use, where buy.… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,406 satisfied customers
I have a mercury 3.3 hp 2-stroke outboard. Ihad to replace
I have a mercury 3.3 hp 2-stroke outboard. Ihad to replace the pin on the propeller and ever since, when put in forward gear, the engine works fine at very low RPM. As soon as I give it some trottle, … read more
Jason
Jason
Marine Mechanic
19,966 satisfied customers
I have a few questions I hope you can answer before
I have a few questions I hope you can answer for me before I go in and make repairs. What forces are needed to bend (even slightly) a 2014 Yamaha 90 HP outboard motor? Does Yamaha have a "Sheering Pin… read more
Michael
Michael
master marine technician/charter captain
Vocational, Technical or Trade Scho
256 satisfied customers
I have a 2002 EFI 225on a Triton TR21. While putting the boat
I have a 2002 EFI 225on a Triton TR21. While putting the boat on the trailer it was put in reverse at about 2000 RPM. Now I have no reverse of foward. The prop spins but torque. I'm hopeing it is just… read more
Jason
Jason
Marine Mechanic
19,966 satisfied customers
9.9 yamaha,when cruising in the water engine will rev up high
9.9 yamaha,when cruising in the water engine will rev up high and lose thrust,have to decrease throttle to get it to stop.any ideas?… read more
Jason
Jason
Marine Mechanic
19,966 satisfied customers
I have a 84 mercury 40 hp two stroke outboard. I recently
I have a 84 mercury 40 hp two stroke outboard. I recently replaced the prop that was a 14 pitch prop while testing driving the boat I hit the prop bad enough too have to replace. The prop was original… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,730 satisfied customers
Mercury120 has about 40 hours of running time... everything
Mercury120 has about 40 hours of running time... everything is ok at an idle but when one accelerates the motor sounds like the prop is out of the water and the pontoon will not gain speed… read more
Charles
Charles
Certified Mercury Tech
5,519 satisfied customers
Hi, I have a Terrova I Pilot installed last year. It worked
Hi, I have a Terrova I Pilot installed last year. It worked like a dream. I took my boat out for a shake down cruise yesterday and the prop would not spin. I have no thrust. The motor will turn left a… read more
Charles
Charles
Certified Mercury Tech
5,519 satisfied customers
I have a 1989 Mastercraft Prostar 190 with a Borg Warner 1:1
I have a 1989 Mastercraft Prostar 190 with a Borg Warner 1:1 transmission. I hit ground and while the engine is at idle the drive shaft turns. It doesnt turn fast, but it is moving. Is this normal. Al… read more
Jason
Jason
Marine Mechanic
19,966 satisfied customers
My 2011 15-hp Mercury 4-stroke runs fine at slow speeds, but
My 2011 15-hp Mercury 4-stroke runs fine at slow speeds, but seems to slip out of gear as I accelerate -- the engine makes a high, whining sound and L lose speed. Is there something I can do to addres… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,406 satisfied customers
Folks, I am still at the lake and I just hit something in the
Folks, I am still at the lake and I just hit something in the water. It was a barely noticeable bump but it was there. This happened in a hard turn. I notices the engine was running fine after that fo… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,730 satisfied customers
WE have a starcraft boat. It is an 06 and today it just seemed
WE have a starcraft boat. It is an 06 and today it just seemed like it slipped out of gear. It will go but not very fast at all. Can you tell me what could be wrong with it? It will also go in reverse… read more
Whitecap36
Whitecap36
Service Manager/Technician
Vocational, Technical or Trade Scho
1,556 satisfied customers
hello, i have a 1981 Johnson 25 hp short shaft. the other
hello, i have a 1981 Johnson 25 hp short shaft. the other day i went to take my prop off i noticed a crack in the lower part of my skag so i took it off and got it welded. then i put everything back t… read more
Master Tech
Master Tech
Service Manager/Technician
Vocational, Technical or Trade Scho
1,167 satisfied customers
I have a 2000 9.9 mercury 4 stoke outboard. i was cruising
I have a 2000 9.9 mercury 4 stoke outboard. i was cruising at full throttle and i dont know if i hit some debis or what but the motor all of a sudden lurched forward and the rpm"s seemed to lower then… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,730 satisfied customers
replaced both engines this year and when out on saturday..
replaced both engines this year and when out on saturday.. engines were running at about 3,000 rpm .. boat was moving nicely on plane when all of a sudden one engines rev;s up to 6,ooo rpms and i lose… read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
2,672 satisfied customers
i own a 90 hp yamaha outboard runs perfect but the prop ...
i own a 90 hp yamaha outboard runs perfect but the prop wont engage. friend said it sonds like a sheer pin might have broken.I know nothing about boat engines but have freinds that will help .any idea… read more
JUST-IN-TIME
JUST-IN-TIME
CERTIFIED MARINE/PWC TECHNICIAN
Vocational, Technical or Trade Scho
74 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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