I'm going to guess or Can't go wrong with either the 3. Many of the commerical guys love with the 3. It's been my experience that motors that get to 1,hrs - 2,hrs require mid-section bushing replacement as slop from use is evident. Ideally the fewer the hours over 5,, the better piece of mind one has.
Limited error codes can be reset and overheats can not be reset is ideal. I have had a few guys recently repower from Fs 3. Ironically, the props from the 3. Those 4. As for motors off the Grady, if the Grady was a 33' Express, I might have some concern since those motor generally were close to 5, RPM at cruise with some pretty flat wheels. Last edited: Aug 16, ShadBurke said:. The islander I'm not concerned with, the motors with such low hours but the , a twelve hundred pounds larger with 's is a concern.
One of the local six pack charter guys running a Parker Pilothouse 25' DV that weight in at 9,lbs runs Fs and have close to 5, hrs on the powerheads.
Lowers start to go after 4, hrs Fuel efficiency decline isn't as significant when loaded down when compared to the Fs for what that's worth. Hope that helps. Yamaha told me that there was a corrosion issue with the pre engines and the ones on the grady are but I'm told there is an easy way to check. It was one of the first ones out of the factory.
The exhaust did have to be replaced but I am lucky and know how to do it. When you remove the lower unit to change the water pump impeller, just look up inside and it is pretty obvious if there is a corrosion issue. I lived with mine as long as possible and when the overheat alarm started to come on after long periods of idling, I knew it was time. My understanding that the after don't have as many issues as the model year.
Nov 18, 16 ST. I cannot attest to the truth of this, but one of the things that the commercial guys say is that these engines lifespan can be measured in hours and in years.
You see engines with ridiculous hours on them, but they have been used darn near every day and taken care if. Vigilant32 BightPatrol. Nov 9, 1, 1, Name G Boat 2. Seems like the 4 strokes are also very reliable. Yamaha makes a great outboard. Sep 2, 2 0 56 Santa Rosa Name matt peake Boat 25 foot pursuit. I can tell you that going wrong with a Yamaha F or F is not that hard to do.
I had a with less than hours and it rotted from the inside out through the exhaust channel. I contacted Yamaha and they were amazed to hear of a rust problem on one of their motors. I was amazed they had never heard about it because once I started looking into the problem on this website and "thehulltruth.
I contacted Yamaha once again and was told this is very rare and they would not assist with parts or labor That was in , I've heard they got sued and suddenly their eye sight improved and now they will at least help a little. I currently have a FB that always had an issue with the center cylinder on the starboard side, the spark plugs would foul and the engine would run rough and the cooling system never really pissed out a lot of water through the water vent.
But I still want you to show us how the Direct Injected 2 strokes are doomed. IIRC, the tag of my boat says its a boat, im pretty sure the motor is the original Johnson 85HP, and its still running Maintenance every year with lower oil change and gaskets, keep gas tank full during winter with stabilizer, take off prop and grease spline for storage, fog carbs or plugs and turn engine flywheel manually, run propylene glycol antifreeze purple stuff for F thru it for storage, flush motor with clear water after each outing, --its 0 degree F.
I change NGK plugs often and impeller every years. Lubricate electrical, and metal linkages under cowl, wipe down outside of motor housing. I stick with Mercury products-oil, gear oil, etc. Original engine. Still has great compression in all cylinders. Tighten engine bolts.
Do most myself. Hope this helps. I can now reply about my Evinrude 28 SPL cheap version of a 30 hp. The 9. I bought both brand new. Only parts were TONS of spark plugs fouling every week some years Champion Technical support told me to go 2 steps hotter in the plugs I now troll almost all day every safe weather day.
Same 2 plugs trolling since start of this summer in N Y. Engine damage is a given for close to WOT runs. The 28 SPL loves the L86C plugs so much that idle is increased by the self cleaning burning over 1 month of running.
I sold my previous boat last year that had a Yamaha 70 HP. It was still running strong and well when I turned it and the boat over to the new owner.
Can't say with any certainty how long this one will go for but with proper maintenance and a little TLC, I'm hoping at least twice as long as the warranty. I'm still running a 10 hp Evinrude on my john boat. I purchased it new in about I keep saying I need a newer motor but the old one keeps starting.
I just got tired of having those green Seahorse motors. The varnished cork floats were good for a few decades before slowly flooding the engine. Cute in the boonies. You can post now and register later. If you have an account, sign in now to post with your account.
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Reply to this topic Start new topic. Prev 1 2 Next Page 1 of 2. Recommended Posts. With basic care and maintenance, modern outboards can go for thousands of hours. Is that even possible? Can an outboard motor run for 1,plus hours, like a big, slow-turning diesel can? I made a few calls to test my hypothesis. One person I spoke with, a charter fishing captain from eastern Long Island, has almost 6, hours on his Yamaha four-stroke. This is a guy who puts so many hours on his engines, he buys his two-stroke oil by the gallon drum.
The E-TEC G2s are all digital, but he wanted to keep his existing steering and controls; the mechanical Yamahas let him do that. All of these guys do two things to extend the lives of their motors: They keep up with regular maintenance, and they wage a constant war against corrosion.
Outboards, diesels and inboards are more likely to succumb to corrosion than to overuse—but corrosion is easy to defeat. Keep it at bay, and a modern outboard motor should keep cranking for thousands of hours of operation.
And when it comes to boats, as Capt. Everything you need to know—everything you can do without being a trained outboard mechanic—is in there, and the most important pages deal with routine maintenance schedules, as specified by the manufacturer. Follow these schedules religiously. Typically, this means changing the lower-unit lube every hours or at lay-up , and on a four-stroke, the crankcase oil, too. You can suck out the crankcase oil through the dipstick tube but changing the lower-unit lube means hauling the boat.
Some manufacturers, like Yamaha, suggest changing the water-pump impeller at the same interval, which means dropping the lower unit as well. Service the thermostat at the same time; overheating shortens the life of any engine.
Evinrude E-TECs have a longer service interval than other outboards: five years or hours for the latest G2 engines. Being two-stroke engines, they have no crankcase oil to change, and have fewer moving parts than four-strokes; that means fewer parts that need maintenance, and fewer parts to fail.
In the past, common maintenance items such as spark plugs, water pumps, lower-unit lube and fuel filters were replaced on a yearly basis, even if they did not need it, she said. Water pumps, for example, can last for hundreds of hours unless they suck in a lot of sand or other debris. Ultimately, the proper care of the outboard—meaning service, replace when necessary, lubricate when recommended—extends the life of the motor. And, she added, outboards that are used more frequently are known to last longer.
E-TECs are sophisticated, with digital steering and controls and other interesting high-tech capabilities: For example, they can be winterized via the electronic control panel.
Funny thing about that motor—it only had two speeds, idle and wide-open. Some external filters can be drained, others have spin-off canisters that are replaced; some, like those from Mercury, have water sensors that warn you when the filter needs attention. Even veteran DIYers find the need to call in the pros on some jobs. There are a couple of other things to keep in mind. Other motors get the filter replaced every hours.
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