yamaha 50 strip down

[archstanton xr2]

hello,a mate has given me a yamaha 50DE mid 80's i think,its seized up,tho rest of outboard is mint,i took head off and gave the pistons a **** good thrashing with a rubber hammer,nothing moved at all,it is solid,im wondering if it would be viable to strip whole powerhead down? what would be worst case senario cost wise for parts? all 3 pistons look good ,no sign of ring damage,its not autolube,mate said it just slowed down and stopped,should i sell as is for spares or dig deeper and mend it,hope you can advise me,many thanks,nick,hampshire,GB.

 

[butlp]

Re: yamaha 50 strip down

Welcome to the board Nick,<br /><br />If I were you, I’d pull the power head off and split the block and take a look. Its hard to tell what may be seizing the thing. If it’s real bad inside and beyond a rebuild you can always sell the good parts on ebay, what have you got to loose!<br /><br />Ps I had a Yam 55 back in the mid 70’s when I lived in the UK that seized and I ended up selling the parts by advertising in the local paper. With ebay you will reach a much greater customer base.

 

[pine island fred]

Re: yamaha 50 strip down

by all means tear it down and take a look but DO NOT try to remove the 12 or 14 bolts that hold down the exhaust cooling cover. think you will find a one piece pressed together crank shaft. if one of the journals are bad , part it out. regards fred