Hi. I have a Sevylor Fishmaster 325 inflatable raft. I do not have the instructions. I am trying to figure out the inflation valves. The 2 Boston valves i understand. But the is another valve on the outside edge that i do not understand how to inflate, or even if i should. Bill in Oregon

Have you considered contacting the manufacturer and having a talk to them. Given this is such a popular boat, I suspect if you just googled it, you would get lots of hits with advice on how to do what you want to do.

Nothing helps. Get a polypro kayak that doesn't need inflation!!!!

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Hello here some information for you. Try them. I hope it help you.
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try "Iboats.com" they have lots of that stuff. Also "Marine engines", If none of those have anything- check with the big chain stores as much of that stuff was carried by Sears, Wal-mart, or Target. They will often carry the manuales on their web site.

Sevylor sells a patch kit, as well as a spray that is kind of like a silicone that works well on pinholes. Go the website: http://www.sevylor.com/Spare-Parts-Kit-P1898C45.aspx - more parts under accessories on the site.

You wouldn't have a copy of the manual for your boat, would you? I can't seem to find one - even called Sevylor and I couldn't get one!

Too late with this reply, but hope it helps someone else like us. I had the same problem, then discovered the boat manual and found the cap is called a Boston valve; in this case 2cm (diameter). I cannibalised a smaller boat of ours for one (valve the same size), and you may get one cheaply by doing the same from a cheap boat at a car boot sale. Otherwise search eBay or Amazon for "Boston valve" or "Boston screw"; not cheap, but still a lot cheaper than a new boat.

up front under the spray shield on the sides of the main side tubes, you will see them pump yhe floor first and that will open the sides to get at the valves. mine are black Boston valves ,

I don't think it would do well at all, Ive taken my Fishhunter 360 in larger lakes with waves and came close to tipping quite a few times with all the gear, motor,etc. Try an inflatable with a v-hull if the oceans your thing!

Use Sevylor Seam Seal...liquid gold it will fix it try www.twister.com.au they sell it!