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  1. J

    Access to reverse lock on 1980 20HP merc

    Dear All, <br /><br />I have a 20HP Merc Blueband from 79-80. <br /><br />The reverse lock link rod has either snapped or jumped out of the cam. How do I get to the system so that I can either repair or replace it. <br /><br />Can I get to the reverse lock cam by removing the engine from the...
  2. J

    Help Please - How to connect shift cable at engine

    Dear All, <br /><br />Can anybody give a picture or diagram of how the shift cable attachs to the shift lever on a 20HP 1980 Merc (S/No 5731713). <br /><br />I am sure I have the right parts but I cannot work out how the cable can fix in place without fouling itself. <br /><br /><br />Any help...
  3. J

    Control cables - how to attach to a 20HP 1980 Merc

    Dear All, <br /><br />I have a 20HP Merc S/No. 5731713 which I am trying to convert to remote throttle/shift<br /><br />I have some merc cables and the correct parts for the internal attachments but the cable will not connect to the shift lever without fouling itself<br /><br />Doe anyone have...
  4. J

    20 HP 1980 merc - Reverse Lock via saddle

    Dear All, <br /><br /><br />In a previous post i asked whether you could get at the reverse lock system on this o/b without having to remove the lower leg. <br /><br />S/No 5731713, 1980/81 20 HP Merc Blueband<br /><br />After looking at the diagrams on the mercruiserparts.com web pages it would...
  5. J

    Reverse Lock on 20HP merc

    Dear All, <br /><br />Further to a previous post some time ago, the reverse lock on this merc (S/No 5731713 - 1980/81 20HP) does not function. <br /><br />My question is - how do I get at the part to repair it. <br /><br />Basically, when you move the engine into reverse a cam rotates on the...
  6. J

    20 HP Merc Remote Throttle/Shift attachments

    Dear All, <br /><br />I have a 20HP Merc 1980/81 S/No 5731713. <br /><br />I am trying to fit the remote throttle and gear shift system from another 20HP merc bought for spares, this engine is exactly the same, only about 11 serial numbers apart. <br /><br />I have the assembly for the throttle...
  7. J

    Throttle linkage 20HP Mercury 1980-81

    Dear All, <br /><br />Following a previous post regarding the lack of power on this engine (S/No. 5731713) at WOT, does anybody know how the throttle linkage on the engine should perform.<br /><br />I asked previously about the low RPM I had found when trying the engine for the first time. It...
  8. J

    Reverse lock system on 1980 20 HP Mercury

    Dear All, <br /><br />I have a 20HP merc, S/No 5731713. <br /><br />The reverse lock system does not work, however, on looking at the system, everything appears to be present but the link rod is not connected to the cam arrangement. The seloc manual is useless for this as it does not seem to...
  9. J

    No power from 20HP Merc at full throttle

    Dear All, <br /><br />I have just installed a 1981 blueband thunderbolt Mercury 20HP onto my boat (12 foot)<br /><br />The engine runs well at idle and will rev thru the range in neutral, however, when I put it in forward gear the engine will not rev above about 1500 to 2000 and will only power...
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