Recent content by PartyBarge

Can you tell if the noise is mostly exhaust or mechanical? Assuming you've checked the oil levels, it's possible to reduce mechanical noise with fresh oil in the motor AND lower unit. Use the best marine oil from Merc or Yamaha, no skimping. Use the highest viscosity allowed by the manufacture...

"K" prop generally refers to the most basic Yamaha prop, it's actually a hub size. That said, you may be wasting too much HP just beating up the water (aka high slippage with a base-line prop). Your satisfaction is likely to increase with a prop specifically recommended for a pontoon drag...

The rocker switch for our docking lights failed and I was able to swap the wires to an installed, but unused ACC rocker. I looked briefly, but was not able to find a replacement for the failed switch.

Dealers here (upstate SC) are still loaded with inventory and using lots of overflow space. Price adjustment has only just started. The value of my potential trade in might decline, but not much compared to newer markdowns. I will be doing some looking soon.

Welcome to the forum. You'll like it here. To answer the question, need more info. Maybe, starting with what is your objective for the new prop? The weight of your pontoon (aka trim level, tube configuration) is a player as well as current WOT RPM and specs on current prop. Without all of that...

Check the kill switch where the kill lanyard connects. Operate it and put it in the run position. Check that the battery switch, if you have one is in the correct position.

If your prop has a pressed-in hub that is slipping, it won't last long. Stay below the slip point to prolong the use. Has the boat run a better speed with that load previously? Where was the 400 pounds, if only in the back, that could be the problem. How are you checking the speed? boat speedo...

Good to read that you are doing the homework. Make no mistake the video link I included is only one depicting MANY issues with Lithium in any consumer or commercial product (don't over look the problems Boeing had with B787 battery fires/overheats). Have another look at the source for more info...

No doubt you've seen the large number of fires/explosions with the more common type of Li batteries in EV's, EV cycles, home power storage and toys. That said, you have selected the safer chemistry of the LiFePo. Be sure that installation is done by knowledgeable pros and ALL charging systems...

There is a very similar comparison for the 115. The 115 rating is to cover any RPM in the desired RPM range. At peak power, at least some 115's have produced 125. Which, of course, supports rigging the boat to best performance for the particular individual use....meaning prop selection.

A note to all: some places have a limit on the footprint of docks. In our case that limit is 1000 sq-ft total for walkway+dock+any other fixed structure. Our single 24' slip dock with one FloatAir lift is near that limit. Anyway, check local regulations, if any....

Don't expect any reduction in sound from that one, maybe there is something more substantial? Also, that one appears to be secured with ball ties. Those certainly have some usefulness, just don't expect too much from them.

Power loss should be more like 3%/1000' Or, in your case, maybe 10-12%. Your low RPM indicates a larger loss. Are you confident the tach is correct? What speed are you getting (GPS would be best). Do you see any black residue in the exhaust? Could be you need some new spark plugs and fresh gas...

Wow, you need to cross reference the year of your power package with when Merc discovered and fixed the fuel cooler issue (and if your motor has one). Also although the fuel filter is likely prior to the cooler, have you checked it for debris/ water ? (Assume that has been done, just covering...

Sounds like damage inside too. Look for pieces of the motor hood in the air intake and/or damage to the air intake manifold. Our cowl controls and directs air to the intake manifold (as well as muffles sound). A clean, high quality, fix should be very possible and is an opportune time to custom...