Question about Sport & Outdoor - Others

2 Answers

I have a 1987 mercury 9.9 outboard drive problems

I have a 1987 mercury 9.9 outboard on a 12' boat. As I was towing my not-so-good sailor/daughter's sailboat to shore with it, I increased throttle speed a bit and the engine revved high with no power to the propeller. Got it to shore OK after that at lower speed. Next time I used it the engine started & ran fine, reverse worked fine but at above 1/3 throttle I get high revs but no power to the prop again. Below one third throttle the prop can push the boat. The lower housing grease seems fine (except for some red spots in it and the prop did not seem loose when I pulled on it by hand.Have not put a wrench to the prop yet. Thanks

  • r.

Posted by on

2 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

The inside of the prop has a rubber between the prop itself and the inside splines to act as a shock absorber,say if you were to hit a rock. that rubber had spun out and the splines are turning inside the prop. the prop is screwed. seen it 100 times before.

Posted on Apr 23, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

We were on the way to the lake when we lost a tire on the boat trailer got that fixed and got on the water the boat seemed to run fine when suddenly we felt a **** like we hit something now the engine wont stay running but engine will run out of water in neutral

Posted on Jul 03, 2011

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer


Outboard or I/O what HP?
Look for the model and S/N on the motor
Then trace it that way it's easyer.
If you give me the numbers i'll look up in my book to see if I can find it

Aug 10, 2010 | Sport & Outdoor - Others

1 Answer

2005 Mercury 50hp 2-stroke outboard motor very sluggish when accelerating, stalled twice when trying to exceed 50% throttle capacity. Last time I used my boat was about two months ago, so I don't think bad...

The carberator is gravity fed and there is propbably gunk in it, when you give it more throttle, it needs more gas but can't get it. Then a build up of gas in the float bowl occurs and nothing works right. It has happened to me and its aggravating, do a complete rebuild on the carb or just replace it and you will be happier quicker.

Hope this helps, Coachtheune

Oct 26, 2009 | Sport & Outdoor - Others

1 Answer

We have a 1967 2 strok mercury 65 outboard motor. wont start cold

Wow.It sounds like some people I know.Late starters.Don,t get out of bed 'till 10 am.With all you have written, a check on the operation of the choke (cold start) would be worth looking at.As you crank the motor,squeeze the fuel bulb at the same time and see if that also may help.Hope this helps

Aug 29, 2009 | Sport & Outdoor - Others

1 Answer

Smoking outboard

Sounds like your running a bit rich. Try leaning down your air/fuel ratio.

Aug 23, 2009 | Sport & Outdoor - Others

2 Answers

Should twin outboard motors be installed evenly or should one be slightly higher than the other? I recently bought a 26 foot Sea Hawk with twin Honda 150s. I noticed that one motor seems to be about an...

Twin outboards should be mounted at the same level. One should be standard rotation and one should be counterrotation. The propellers should be the same pitch and size but opposite rotation.

Just check which hole on the motor mount that the top mounting bolt goes through. Should be the same one on both motors.

You may want to call the manufacture of the boat and see it there was something unique about that boat that required mounting them that way. You will need the serial number from the hull of your boat when you call.

Jul 26, 2009 | Sport & Outdoor - Others

2 Answers

Mercury 4 hp outboard engine wont go into gear

The lower gears arent hard to change, if your in there might as well get all of them there are only a few. the lshift lever does nothing but move the gears forward and back to engage forward and reverse, just pay extra attention to keep it water tight when done. A dealer should have the assembly chart for easy fix

Apr 15, 2009 | Sport & Outdoor - Others

1 Answer

Mercury 20Hp impeller/water pump location

It is located inside the lower unit housing. They are fairly easy to replace. Most Mercury authorized service stations will charge around $120 for this task.


Mar 26, 2009 | Sport & Outdoor - Others

Not finding what you are looking for?
Sport & Outdoor - Others Logo

Related Topics:

474 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sport & Outdoor - Others Experts


Level 3 Expert

63581 Answers


Level 3 Expert

98771 Answers

Brad Brown

Level 3 Expert

13732 Answers

Are you a Sport and Outdoor - Other Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides