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Old 23 March 2014, 06:04   #1
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50 Yamaha

The restoration is gathering pace!! Next stop clearcote!!
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Old 23 March 2014, 06:55   #2
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very nice
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Old 23 March 2014, 08:21   #3
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Nice job.
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Old 23 March 2014, 09:00   #4
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Looking good.


Just finished one myself, lid away getting new decals.

Genuine 60 just with the mariner yoke.
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Old 23 March 2014, 09:40   #5
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A proper workshop, that's cheating!
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Old 23 March 2014, 09:45   #6
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A1an,

Just a tip. Sometimes those shocks can be ineffective after lots of use. They allow the engine to tip up when slowing down.

If you get an adjustable angle grinder disk key off eBay for a fiver, they work perfectly. Then refill with SAE 30 hydraulic oil, about eight quid on eBay. You will stiffen them back up and they will last years more.
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Old 23 March 2014, 10:43   #7
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Quote:
Originally Posted by RIB-Teccie View Post
The restoration is gathering pace!! Next stop clearcote!!
Looks great, would love to build an engine up if knew how , looks same colour ral as my 90 yam
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Old 23 March 2014, 12:23   #8
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Originally Posted by RIB-Teccie View Post
A1an,

Just a tip. Sometimes those shocks can be ineffective after lots of use. They allow the engine to tip up when slowing down.

If you get an adjustable angle grinder disk key off eBay for a fiver, they work perfectly. Then refill with SAE 30 hydraulic oil, about eight quid on eBay. You will stiffen them back up and they will last years more.
That's a handy tip.

In the photo of the lid can you see the yellow drum sitting on the floor?

That's SAE30!
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Old 24 March 2014, 10:57   #9
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Here is a tale of woe. Whoever bought the 50 Yam (presumably from new) didn't use marine two stroke oil. They also premixed on top of relying on the oil injection.

How do I know.

1. Oil in the carbs (should have been none) and it had rotted all the plugs and seals into a black sticky mush.

2. The oil burned rather than correctly lubricating the engine. Deposits half way down the pistons.

3. The factory honing marks are still visible on the bores. Engine must be under 50 hours or less.

4. The deposits were around what you would expect at 500 hours.

5. The oil hardened the crank seals and caused them to fail.

The oil was red and had a strange smell, possibly chainsaw or moped oil.

If you want to cost yourself a fortune and have your engine last 5 minutes, that's the way to go.

Also, it had not been flushed through with fresh water, huge salt deposits round the thermostat.

Fortunately, this is fixable, but it could just have easily been beyond repair. All for the price of a good outboard two stroke and a bit of knowledge.
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Old 24 March 2014, 11:43   #10
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Good Work. I got one in the garage I need to get on.... *Sigh*
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