Search results

  1. Alumarine

    2021 mercury 4 stroke 115 not turning over

    If you're asking would not following the written break in procedure explain your starting issue? The answer is no. Like others have said it could be a low battery. fyi cranking and turning over mean the same thing which is the motor is rotating and trying to start. It does not mean the motor...
  2. Alumarine

    Speed of a 21ft Mariner

    I'm not a prop expert but that works out to 8% slip which I think is good. If you went to the 21 at 5400 with 8% slip you would only improve speed by 1mph.
  3. Alumarine

    Speed of a 21ft Mariner

    Nice boat! To answer your speed question you can use a prop calculator. You need your gps speed, rev's and gear ratio. If you provide those someone here can help you out.
  4. Alumarine

    Mercruiser 3.0 squeal keeping engine from starting

    You can put a socket on the alternator nut and rotate the motor. You will probably have to put tension on the belt with your hand to stop it from slipping.
  5. Alumarine

    Carb or worse?

    Have you tried pouring a couple of ounces of good gas down the carb and see if it fires?
  6. Alumarine

    Shorelandr VIN location?

    My experience with several older shorlandr trailers makes me think they were stupid enough to only put the vin on a sticker that gets rubbed off.
  7. Alumarine

    Connect Battery

    I'm guessing it's an older used boat? Hard to say why. Are you sure the black part is part of the cover and not paint? Still best to trace the wire(s) if you're not sure.
  8. Alumarine

    Where to mount my transducer?

    Something like this is handy so you can move the transducer around without drilling new holes. https://www.iboats.com/shop/rig-rite-12-lx4-w-horizontal-transducer-mounting-plate-gray.html
  9. Alumarine

    How can I raise my 1977 1150 Mercury because I want to add oil to the power/trim unit

    The manual tilt valve is on the bottom of the pump. Turn it fully clockwise to tilt the motor up.
  10. Alumarine

    Atwood surge coupler welded on Prestige trailer

    I did the same but drilled holes and bolted the new one on.
  11. Alumarine

    1974 Starcraft 18' runabout w/3.0 140HP 4-cyl. *So many Questions*

    1. There's a removable block on the port side of the front motor mount that allows you to change the belt. No need to block or jack it. It's a 10 minute job. As nola mike said put a spare in there as well. As far as trim tabs go, I use them on my 18 footer and others do as well.
  12. Alumarine

    Connect Battery

    Welcome, you're going to have to follow it and see what it does. I might check all of them.
  13. Alumarine

    Nautius Smart Trim Tabs

    These work better for correcting a constant list. If people move around the tabs will have to be adjusted manually which is not practical on the water. I installed them on my Sylvan to correct a list caused by having my fuel tank and kicker on the port side. It worked very well for that. I...
  14. Alumarine

    Safe to tow with bow not resting on front roller?

    Definitely tighten it up before towing 500 miles. As racerone said you should be able to do it on land. As far as reversing the strap, it will take 5 minutes to find out.
  15. Alumarine

    1980 mercury 50hp carby

    I had plastic grates on mine but ran it without them. Some fuel can leak out of the carbs if you pump the bulb too much. As long as that's the only time it leaks it should be fine.
  16. Alumarine

    85 four winns santara prop

    Are you sure your tach is ok? 25 mph at 2000rpm doesn't seem right. Did you check that speed with a gps?
  17. Alumarine

    1990 mercruiser 3.0 harmonic balancer coming off

    The pulley above it doesn't have bearings but what it attaches to might. I think it's the water pump. You have to find out why it's wobbling. You can get the balancer from an auto parts store. You can try GM #'s 03826280 or 3826280 or 03826292 and see if those match up.
  18. Alumarine

    1990 mercruiser 3.0 harmonic balancer coming off

    Was it the outer part that was out of alignment or the part on the crankshaft? In either case they don't tend to cause trouble when they're ok.
  19. Alumarine

    1990 mercruiser 3.0 harmonic balancer coming off

    Are you sure it's coming off the snout or is it the outer part of the balancer that is separating from the rubber part? As Bondo said it's pressed on and you will need a harmonic balancer puller to remove it.
  20. Alumarine

    trying to find the model for a 1975? 18' open bow

    I thought they were rated for a 140?
Top