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Reverse jump & grin when put in reverse 90hp mercury outboard

Posted by Steven Scott on

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Gordon Richard MacLean

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  • 253 Answers

This Can Be a Few Problems!
1- Check The Control Cables Are Set In The Neutral Position Correctly
Check And Try Again -If Not
2-Is The Control Box Moving The Lever Fully To Forward And Reverse Positions- If Yes
3- Remove Gearbox ,Remove Bearing carrier ,Remove Prop Shaft,
In The Front Of Prop Shaft There Should Be A Pin With Three Ball Bearings **(Will Give You The Problem You Are Having If Left Out) The Pin Should Not Be Flattened Or Badlly Worn ,
Replace If Worn
The Shift Cam Located Inside Gear Box Right At The Back Should Not Be Cracked Or Chipped ,You Can See It With A Torch Through The Middle Of Forward Gear ,Replace If Damaged.
Re Assemble And Test.

Posted on Mar 17, 2013

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Anonymous

  • 187 Answers

SOURCE: outboard motor idles but will not speed up

You really have to blow out the jets to clear any varnish left over from lay up.

Posted on May 13, 2009

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fordexpert

  • 5692 Answers

SOURCE: it will not go into reverse

You did not tell us if you have a small outboard or if you have remote shift controls. If you do have remote shift controls you can try reversing the cable ends if it is a 2 cable system or disconnect the cable at the engine. By disconnecting the cable at the engine you isolate the problem to the motor. Then you can grab the shift lever manually at the motor and see if it will now go into reverse. Some remote levers lock out reverse if the choke is engaged or if you are new to this boat there may be a button to push on the throttle to allow reverse to engage.

Posted on May 23, 2009

Anonymous

  • 207 Answers

SOURCE: 1999 Mercury Mariner 9.9hp outboard motor

should be on the side with a lever but could you give me more info please

Posted on Jun 27, 2009

Anonymous

  • 1 Answer

SOURCE: i have a 90hp yamaha two stroke, makes a grinding

I had the same thing happen to me this weekend. I tried to slam it in reverse after my dog fell off and it sounds like yours. Have you found anything about the issue?

Posted on Nov 16, 2009

fordexpert

  • 5692 Answers

SOURCE: when i put my mercury 150 into gear it hits really

See if you can turn down the base idle some. Then check your gear lube, sometimes you can get an airpocket and the top end is dry. Last, if still not fixed, see if you can adjust the cables so that the throttle RPM changes after the gears do.

You want a little lag in the throttle so you don't take out a dock when coming onshore.

Posted on Mar 17, 2010

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