messing about in boats

Mercury 5hp propeller – on the cheap

Posted in Boat Building & Maintenance by Joseph Moore on September 10, 2010

So, the book price for a new propeller to fit a Mercury 5hp two-stroke is nearly £70. Yes, £70 – for a small propeller! The thing is, the Mercury is basically a rebranded Tohatsu and the list price for an 8″ Tohatsu propeller is £45. Much better.

Still, Extreme Marine are doing them for just over £20. Ideal! Mine arrived yesterday and apart from the colour (white, not black) it’s exactly the same casting and fits perfectly. The only downside is they don’t stock the nut and cotter pin, so I need to order those through a Mercury stockist.


2 Responses

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  1. Wolfgang Bechstein said, on October 4, 2010 at 1:39 am

    Hi, I just dropped in here for the first time today because Dylan Winter of KTL mentioned your blog. I haven’t read everything yet, but I have a small comment on your most recent post. I own a fairly old 5hp Mercury (possibly before they became rebranded Tohatsus), but mine has a spare cotter pin inside (don’t have it before me now and don’t recall exactly where, but I think it’s stuck into a rubber spacer of the fuel line). This looks like a factory arrangement, i.e. not something that the previous owner may have done, so it might be worth checking whether yours has one too.

    Best regards from a guy in Japan sailing a) an Achilles inflatable with a jury rig sail and said Mercury outboard, and b) a 30-year old 21-ft Yamaha fin keeler with an 8hp Yamaha outboard (no spare cotter pin in that one, I believe).

  2. messingaboutinboats said, on October 31, 2010 at 8:08 am

    A bit more to this story: Barnet Marine wanted over a tenner for one nut and cotter pin, so I had a rummage through my box of random nuts and bolts until I found one that fit and secured it with a brass split pin. Did the job just fine. I’d like to replace the nut with a cheap stainless one before too long but I’ve no idea what size or pitch it is. Might have to take the whole engine down to the local hardware store and sit there offering up each size from their huge collection of fixings…

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