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Old 23 October 2008, 13:46   #1
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How much oil & where to buy spark plugs?

I want to change the G/box oil on my 50hp. Mercury Brown band, Four cylinder Two stroke. how much oil will I need? Also I want to change the plugs. I have done a search on this forum and it seems the plugs I need are NGK BPZ8H-N-10, (I think) But my local motor shop does not stock them. So can any one tell me where to buy them. Many thanks, Colin.
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Old 23 October 2008, 14:54   #2
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Originally Posted by Mercury View Post
I want to change the G/box oil on my 50hp. Mercury Brown band, Four cylinder Two stroke. how much oil will I need? Also I want to change the plugs. I have done a search on this forum and it seems the plugs I need are NGK BPZ8H-N-10, (I think) But my local motor shop does not stock them. So can any one tell me where to buy them. Many thanks, Colin.
Champion RA8HC suits the Big Foot four cylinder, not sure if yours is an extended version of the lighter block?

Gearbox oil is likely to be about 750ml, but a liter should do you.
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Old 23 October 2008, 16:12   #3
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Quote:
Originally Posted by Mercury View Post
I want to change the G/box oil on my 50hp. Mercury Brown band, Four cylinder Two stroke. how much oil will I need? Also I want to change the plugs. I have done a search on this forum and it seems the plugs I need are NGK BPZ8H-N-10, (I think) But my local motor shop does not stock them. So can any one tell me where to buy them. Many thanks, Colin.
Errm...no, your plugs should be NGK BUHZW for a Brown band 4 cyl 50 if you're using surface gaps (which is what runs best in those motors). If you want a set of 4 drop me a PM.

You'll need 2 tubes if you're using tubes, or a litre if you buy the pump (far easier but a lot more money)
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