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Old 16 March 2012, 15:02   #1
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Leg removal

I am trying to remove the leg on my mercury 9.9 2 stroke to inspect/replace the impeller.
One of the bolts is not coming out!
There all thread locked on and I can undo 2 of the three as the third is rounded of.
I've tried spanner, pliers, mole grips and it wont budge.
A socket will grip it but I can't get the drive part on the socket as there isn't enough room.
So my question is, any ideas of how to get it off?
And also where to get replacements bolts?
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Old 16 March 2012, 16:44   #2
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Hi Lockieboi,

I've come across this many times, on all sorts of applications and there's no one definate answer I'm afraid!!

Good pics, have you tried tightening it first? sometimes this works and is the first thing I try, then backwards and forwards, get some penetrating fluid on there. If it shears off, that might be a blessing!! We use a stud and bolt extractor made by Irwin which grips the head of the bolt even if it's rounded off and allows you to at least put a bigger spanner on it.

If it comes down to it you might have to cut the head off with a hacksaw, remove the lower unit and deal with the thread on the bench, hence the head shearing off would probably be a blessing!!

Good luck
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Old 16 March 2012, 16:47   #3
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http://www.screwfix.com/p/irwin-5-pi...FQITfAodi1gbKA

This is an example of the tool i'm talking about
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Old 16 March 2012, 17:12   #4
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Thanks for you reply.
Not sure that tool will work as I can't get a ratchet in there as there's not enough room.
Will have another play tomorrow I think.
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Old 16 March 2012, 17:15   #5
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you could always grind the head off the remove the rest of the bolt shaft with mole grips once the leg is off
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Old 16 March 2012, 17:34   #6
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Shame you're not nearer to me. I have a set of short stubby sockets (with the hex inside not splined). Add to that they are 3/8th drive so the ratchet would fit in the gap. That's the sort of thing you need to try
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Old 16 March 2012, 17:52   #7
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Quote:
Originally Posted by Fenlander
Shame you're not nearer to me. I have a set of short stubby sockets (with the hex inside not splined). Add to that they are 3/8th drive so the ratchet would fit in the gap. That's the sort of thing you need to try
Thanks, maybe I need to go tool shopping!
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Old 16 March 2012, 20:13   #8
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Get a socket on it & then a pair of stillsons on the outside of the socket.
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Old 17 March 2012, 03:34   #9
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You don't have to use a ratchet with those Irwin things as they have a hex on them for using a spanner!

Pikeydave's idea is a goodun if the head is still hex and not too rounded off.
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Old 17 March 2012, 05:08   #10
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Stilsons?
I did try a socket and tried to turn it with a pair of Grips but it's to tight and the grips just slip.

Didn't realise they need a spanner not a ratchet they seem like a good idea.
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