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Old 03 November 2011, 07:33   #1
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Country: UK - Scotland
Town: lendalfoot
Boat name: eileen
Make: flatacraft force 4
Length: 3m +
Engine: yet to come
Join Date: Aug 2011
Posts: 8
50 hp clamshell Blue band Merc

Just picked up an engine that I believe is compatable with my restoration project Flatacraft Force 4. Its been dry stored for 2 years. One thing age has impresed upon me is that if you don't know---ask. What is the correct prceedure to follow BEFORE starting up. I am thinking here of imlellors, crankshaft seals etc. Advice warmly welcome. OLDUN
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Old 03 November 2011, 13:11   #2
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Country: UK - England
Town: bicester
Length: no boat
Engine: outboard only
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replace fuel pump diaphrams (usually there is a kit), any filters, remove,strip clean carburetor/s new sparkplugs replace gear oil, good luck
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Old 04 November 2011, 05:29   #3
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Country: UK - Scotland
Boat name: Wildheart
Make: Humber/Delta Seasafe
Length: 5m +
Engine: Merc 60 Clamshell
MMSI: 235068449
Join Date: Apr 2007
Posts: 4,611
Also worth changing the oil in the grearbox - if it's turned to mayonaise, then the case seal(s) weill probably need replaced or more likely the washers behind the filler / drain screws if the previous owner(s) have re-used the old ones umpteen times.

These engines in the early days were notorious for destroying themselves. One to definetly check is the spark advance. The later models were retared by a few degreees and allowed to rev a bit higher compared to the early models. Having said that, as you have a 50 the spark may already not be at +23 degrees or whatever the number was for the early 60. Have a look into your top cyl through the spark hole with a torch - if the "dam" is eroded near the spark, you proably want a bigger jet in your top carb amongst other things. - Give Alex a call at Mitchell's in Renfrew - he can give chapter & verse on what needs changed. (and is pretty quick at getting spares for older engines)

I suspect I may have a pile of spare O- rings & gaskets for your vntage left over from my rebuild (I got the "complete engine" set, and it came with a couple of subtle variants on a gasket for certain joints) if you find you need one, Let me know, worst case the gasket was never modified and I'll have used it already!


PS Crankcase oil seals are pretty cheap - but if you do them, buy the powerhead gasket set as well, there is no quick or easy way of changing them!
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Old 04 November 2011, 12:36   #4
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Country: UK - Scotland
Town: lendalfoot
Boat name: eileen
Make: flatacraft force 4
Length: 3m +
Engine: yet to come
Join Date: Aug 2011
Posts: 8
Many thanks to uncle al & 9D280 for what looks like sound advice. This is a bit of a last hurrah pluss I am not amoung the financially endowed so I want to get it right. OLDUN
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