Re: outboard engine 1991 suzuki dt65(hp)
Hi chuck357!<br /><br />I have a Suzuki DT65, 1991 also by the way.<br />This is the way I made my outboard ready for the winter:<br />1) I bought a spraycan of "conservation oil" for conservation of engines, that I bought at a gas station.<br />2) I had my boat on trailer when making the outboard ready for the winter.<br />3) Removed the black cover over the carburators (about 8-10 screws to take away so the cover can be removed).<br />4) Attached water muffs on both sides of main water intake and a water garden house attached to the muffs. You can buy muffs in any boat shop. Plenty of water pressure. Start the engine with gear in netral and engine in vertical position.<br />While engine running spray conservation oil into the carburators and let the engine run for some minutes. Disconnect the fuel line and spray oil into the carburators until the engine dies of fuel stavation. Now the internal parts of the engine should have a coat of the oil to protect it from rust etc during winter. Disconnect the water garden house and muffs. With engine still in vertical position let all water flow away. <br />5) Mount the carburator cover like it was before and make sure all screws are there and tightened.<br />6) I also spray whole outboard both under the cover and outside with thin oil ("Penetrating Oil CRC 5-56") that prevent rust. Just a thin film layer. <br />7) I also change gear case oil now, not in spring. Just remember after you emptied old gearcase oil you fill in the lower hole (after screw is removed) until it comes out oil in the upper hole (remove the screw first). To prevent oil from dripping out in lower whole while you take the oil tube away you put the upper screw in first then remove the oil tube and finally put in the lower screw and tighten all screws. You need 650 ml gearcase oil to fill the gearcase with new oil.<br />8) In spring you change to new spark plugs (NKG B8HS with gap of 0.9 mm) after you first have run the engine on old spark plugs until all conservation oil has been burned out so to speak.<br /><br />This is what I do at least and it has worked fine many winters (here in Sweden where I live it is sometimes minus 20-30 C and my outboard handle it just fine with above procedure).<br />The battery I take out of the boat and have it in a garage and charge it full.<br />I do not use old gas in the spring so if you have gas left over just use it in your car now or whatever. Use fresh gas when you use your outboard again next spring/summer.<br /><br />I know above works, but probably there is more you can do to have the outboard even more prepared for the winter, and hope someone can give some additional advice.<br />I do not use my outboard in saltwater so it is maybe some more to think about if you use your engine in saltwater.<br /><br />Good luck!<br />/Bo
