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  1. 5

    Mercury 500 throttle linkage

    Hi- I'm wondering if my '73 mercury 500 is missing something. I haven't got this engine running yet but cannot see any way in which the gear linkage connects to the carbs'. I can see how you could 'open' the carbs' up by hand by way of the linkage between them but surely that linkage should go...
  2. 5

    mercury 500 '73 - could it do with new plugs?

    Hi - have recently bought '73 mercury 500 and having unsiezed it and got control unit working (with great advice from some of you) - on first attempt to start no joy. There is a spark on on 4 plugs but not that big. I was told by someone that the thunderbolt ignition should produce a significant...
  3. 5

    mercontrol mystery component

    Hi - I wonder if anyone can help. I was taking a 70's mercontrol unit apart this morning and when I gently prised the cam off the control leaver I heard something 'pop' and land on the floor. Its a small metal cylinder 8mm in dia' and 7mm long. I can't for the life of me work out where it fits...
  4. 5

    Mercury 500 siezed

    Hi, I have just bought a '73 Mercury 500 (kindly dated by a memeber of i-boats) I bought it blind from ebay as 'spares or repair' and it was said to be listed as such as the seller hadn't run it for a while and wasn't sure it would start. A friend of mine collected the engine from a long way...
  5. 5

    Mercury 500 age

    Hi, I've just taken delivery of a Mercury 500 4 cylinder and have looked at various serial number websites to date it but no luck. It says made in Belgium and has serial number 9021827. It has blue and chrome decal on 'ribbed' sides and the cover at the back is chrome. Any help would be much...
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