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Old 12 September 2008, 11:27   #1
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Yam 2.5 gear oil screws

Hi.

Sorry maybe a daft question but first time SIB and out board owner.

Got this ouboard recently with an 8 - 9 foot SIB, maiden voyage is set for Sunday, so I thought I would top up the levels and ensure all is well.

Oil no problem, no need to drain as looks fine and OB is only had about 10 hours use from new 2 years ago, brought locally from a chap and engine looks spotless.

Thought I would replace the gear oil but cannot undo the screws, I am quite strong but no joy.

So I am thinking in 10 or so hours of use the levels should be ok as i am dying to get out on sunday, should it be OK?

Cheers

Putty
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Old 12 September 2008, 11:52   #2
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If it's only got 10 hours of use and there's no residue round them or the prop they should be fine.

You'll need careful use of an impact driver with the correct bit to get the screws out.
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Old 12 September 2008, 13:35   #3
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Quote:
Originally Posted by Putty View Post
Hi.

Oil no problem, no need to drain as looks fine and OB is only had about 10 hours use from new 2 years ago, brought locally from a chap and engine looks spotless. Thought I would replace the gear oil but cannot undo the screws. So I am thinking in 10 or so hours of use the levels should be ok as i am dying to get out on sunday, should it be OK?

Cheers
Putty
If possible change 2 year, 10 hour used old gear oil, new engines requires firts oil change after first 10 hours engine use, remove both oil screws, sometimes you'll find very small/fine amounts of metal fillings/particles in the exiting old oil, this is normal first 10 hours gear wear, after draining completely used oil, pump some new oil on upper oil screw while rotating the propeller with hand, so to wash complete gear case interior, when oil has finished exiting lower screw, replace for a good quality gear oil 80-90 grade or a multigrade 80/90. This is a factory recommendation, but up to you if you would like to go change it or not, oil is cheap, first screw removal, the hard issue.

Yes, it's always very difficult in any brand engine to remove first time leg oil screws from brand new, get a big, thick, large screwdriver to fit properly the screw upper cut/notch to screwdriver, or use a impact driver as Nos recommends, if none available, take engine to shop to have screws loose with appropriate tools, practice oil change by yourself. Engine must be in a vertical position for correct draining oil out and topping new oil level in.

Happy Sibbing
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Old 13 September 2008, 09:26   #4
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Thanks Guys, appreciate your help.

Got her going last night in a tub of water.

Going for a spn tomorrow as planned.

Going to take it to a place (unknown as yet) and get someone who knows what they are doing with the right tooling to do the oil for me, and prob an oil change too. I have all the stuff just need the man with the tools.

Cheers

Putty
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Old 15 September 2008, 03:58   #5
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Might try hitting the screws with a generous amount of spray freeze (can get it at a good electronics shop. If you can't find it, get a compressed gas duster, like for keyboards, and turn it upside-down.) That should slightly contract the metal in the screws, which may loosen things up.

jky
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Old 15 September 2008, 19:41   #6
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Thanks for the tip there Jyasaki.

Spookily enough I brought a can of it for my tennis elbow and banged up foot the other day.

I will have a go.

cheers

Putty
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Old 16 September 2008, 11:40   #7
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No problem. Good luck.


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