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    Can F40 4-stroke be run when fully tilted?

    Is there any lubrication issues if trying to run this engine when fully tilted? I'm wondering if it would be ok to flush the motor using the muffs while it is running, as I would have to tilt it right up as I keep it at a marina. I flush every go with the hose attachment but have gathered that...
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    Yam F40 Revs fluctuate when running.

    Today I was cruising at 4800 revs and noticed that the revs would drop momentarily to 4700 then back up again. Is it normal for the revs of a motor to fluctuate when running? Maybe due to a current in the water or something?<br />It does the same at 5100 dropping to 5000. It does it just...
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    Steering Friction Screw on Mariner 5hp

    Hi<br /><br />I tightened up the steering friction screw on my 1999 Mariner 5hp. This was to keep it straight when tilted up out of use. My buddy moved the engine from side to side and now the motor steering is loose. Tightening the screw has no effect. <br /><br />Is it easy to fix this?<br...
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    Yamaha Maintenance Shedules

    I was looking at the service chart in my F40 owners manual. It states an amount in engine hours and also in months/year do do inspections. <br /><br />For example, 100 hrs (6 months) 'Inspection/replacement of fuel filter'<br />Does this imply if your usage is low in hours then go with the 6...
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    Strange prop damage.

    Sorry if this is a really dumb question<br /><br />My Yam F40 4 stroke is almost new with 17 hours recorded. After my last trip I noticed a small ding on one of the prop blades. Right on the leading edge. I looked again today and I see a ding about the same size, right beside the last one. The...
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    Idle issue on 2004 Yamaha F40?

    I had my 2004 F40 (15 hours run) idling at a steady 800 revs on the flush muffs in my yard a few weeks ago. The engine always starts without having to lift the fast idle lever.<br /><br />I went for a run yesterday and after cruising for 45 mins or so I brought the engine to a very slow speed...
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    What about a Rigid Inflatable?

    I've noticed that no one posting on iboats has a R.I.B aka Rigid Inflatable. These are selling by the truck load in the UK. Every season there are more and more of them in my marina.<br /><br />They are touted as being unbelievably versatile, excellent sea boats, great at carrying loads, etc...
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    Question for nautijohn on Smart Tabs

    I have just read with interest a previous post about Smart tabs. I was interested in a hydro- foil but it looks like these are the way to go. They sound like an awesome piece of kit at a good price.<br /><br />Are they available in the UK?<br /><br />My boat is a 17ft semi-planing fishing boat...
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    Question for nautijohn on Smart Tabs

    I have just read with interest a previous post about Smart tabs. I was interested in a hydro- foil but it looks like these are the way to go. They sound like an awesome piece of kit at a good price.<br /><br />Are they available in the UK?<br /><br />My boat is a 17ft semi-planing fishing boat...
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    How do I flush my Mariner 5-hp 2stroke?

    This motor is approximately 1999. I have it as a kicker on my 17ft fishing boat. I got a 2004 Yamaha 40 4-stroke with a flushing attachment which works really well. It is really starting to bug me that I can't flush my kicker without taking it home. The boat is kept in a marina. The water...
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    Amp rating of crimp terminals?

    I bought some red and blue insulated crimp terminals from a non marine electrical supplier. (Maplins in the UK).<br /><br />My idea was that I needed red for my positive connections and black for my negative. As there was no black I figured blue must be negative. The kid in the shop said that...
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    Connecting Cobra DSC VHF to Navman 5500 Plotter

    Hi<br /><br />I connected up these 2 items as it states in the manual. I connected the red wire of the GPS cable from the radio to the white interface wire of the Navman plotter and then connected the black wire from the radio on to my negative bus bar at my switch panel.<br /><br />When I get a...
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    Help with basic electrical setup.

    I'm in the process of adding some equipment to my 17ft outboard powered fishing boat, eg fixed VHF radio, Chart plotter, bilge pump, fish finder. My equipment has fuse ratings as low as 1 amp for the plotter and up to 10 amp for the VHF. I am currently running with 1 battery. <br /><br />I have...
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    What size hole for Yam digital Tach?

    I'm about to flush mount the multi function tach that I got with my F40 Yam 4 stroke. I was wondering what size of hole I need to drill to fit it.<br /><br />Thanks<br /><br />Andy
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    4 Hours for basic Yam F40 service??

    I collected my Yamaha F40 4 stroke today after an annual service. I was charged for 4 hours labour to do the following work by my Yamaha Dealer.<br /><br />Change Gear oil<br />Change Engine oil & Filter<br />Change Spark plugs<br />Remove prop and grease shaft<br />Flush carbs and clean out...
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