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Old 28 January 2013, 17:11   #1
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Engine servicing advice

Evening all,

I am planning on servicing my Yam 85AET myself once the weather gets a bit warmer. So I', planning to get a kit with new plugs, fuel filter, impellor, and gearbox oil. I'm reasonably adept with the spanners, I used to do the more basic fettling on my bikes ok, so it can't be THAT much more difficult.

My main question is about the oil change: i know I need to pump it in from the bottom and the instructional vids I have seen on YouTube seem to involve a sort of pump attachment which goes on the oil bottle and a tube with a screw fitting on the end to attach to the lower drain hole. But I can't see these for sale at either of the places online that I've seen service kits on sale. Where would I get one?

As far as I can see, again from vids on YouTube, the impellor change should be reasonably simple once you get the lower gearbox off the leg. Are there any common n00b pitfalls I should look out for.

Cheers,

Dan
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Old 28 January 2013, 17:56   #2
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Originally Posted by Clamchowder View Post
Are there any common n00b pitfalls I should look out for.
Don't know your engine, so maybe it doesn't do it, but when you put the lower unit back on, getting the shift shaft rotated a bit so you end up with the gearbox in a different setting (ie forward, neutral or reverse) from the one the gear lever is in. Which gives you an engine that will only run in forward, or backwards, but not both

Don't ask me how I found out about that one....
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Old 28 January 2013, 18:18   #3
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Quote:
Originally Posted by Clamchowder View Post
My main question is about the oil change: i know I need to pump it in from the bottom and the instructional vids I have seen on YouTube seem to involve a sort of pump attachment which goes on the oil bottle and a tube with a screw fitting on the end to attach to the lower drain hole. But I can't see these for sale at either of the places online that I've seen service kits on sale. Where would I get one?
Listed just for you ;-)

outboard motor - service lower gear casing - gear oil with pump - Quicksilver | eBay
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Old 29 January 2013, 08:34   #4
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Some tips :

Should grease slightly upper splinned shaft when assembling back, align water pipe for good insertion, rotate flywheel if shaft doesn't want to pop inside crank. Impeller rotates CW, don't forget to attach shaft key.

Although the oil pump works very good, it' s kind of messy, manufacturer should have included a plug to close connector's end and avoid unwanted oil spills. Be aware that the standard connector delivered doesn't fit all engines tails, so probably will need to buy an extra connector that screws on standard one to fit yours.

Happy Boating
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Old 29 January 2013, 10:09   #5
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Originally Posted by diesel do View Post
That won't fit the Yam-the threads are wrong. I have both pumps here.

This one will...

Yamaha Yamalube Outboard Gear Oil Pump For 1L Package | eBay

Make sure you use new fibre washers, and if you get the new type of fibre washers (red outside, black line round the rim) retighten them after a couple of hours as they compress slowly. I've had to redo a few that have leaked water in becuase they came loose. It doesn't happen if you retighten them after a settling period.

When you drop the leg, look out for a bit of plastic that may drop out-it keeps the shift rod in alignment. It'll just push back in. Don't buy the 'service kit' either-it's a damn sight cheaper to buy the plugs separately on Ebay or from a bike shop. They should be BR8HS-10 plugs in it.
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Old 29 January 2013, 10:23   #6
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Thanks for all the advice guys. Need to get it all done before Easter as I'm hoping to head up to Lomond again.

The service kits includes 1ltr of gear oil. Does that sound about right?
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Old 29 January 2013, 10:28   #7
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Quote:
Originally Posted by Clamchowder View Post

The service kits includes 1ltr of gear oil. Does that sound about right?
A litre will give you plenty spare afterwards, maybe enough for a 2nd change.
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Old 30 January 2013, 18:29   #8
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Hi.

I generally use Key Parts for all my service bits and they supply a Serria adapter that fits the Yam drain thread. This screws onto the standard Merc thread and its soon all in.

What I have found is that the oil goes in much easier if its warm. Just keep it inside before you use it.

All the other advice you have been given is very sound.

Servicing the Yam is really very straighforward, I service our club 115 and I guess its much the same.

Davej
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Old 31 January 2013, 06:45   #9
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Hi

Just in case you need help whilst you are up in loch lomond here is my number

Dave
0759 563 8185
ps a list of everything we do in a service is on our website if you need a check list as to what you should do.
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Old 31 January 2013, 10:06   #10
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Thanks for all the advise. Kind of looking forward to getting stuck in now.

A lot of these kits don't include a new Woodruff key with the impeller. Is it necessary every time?

PS Thanks for that Dave. Dunno if you're aware but your website doesn't seem to want to load?

Actually it does load in the end, it's just reeeeaaaalllyyy slow!
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