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    yamaha 150prov

    my boat mech. 3 years ago gapped my plugs (he said a bigger gap) and it runs great but I have put new plugs in and was wondering what the largest gap could be for a 1988 150 PROV<br /> thanks
  2. O

    need help -yamaha 150prov

    looking for help on replacing impeller(water pump)<br /> helpfull if i could get instructions on this matter ,if someone out here has a manual , which gear should the shifter be in to drop the lower unit ,neutral or forward???? or maybe reverse ??, i have the lower unit breakdown of parts but...
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