Powerful, light, nimble and compact, boaters know that its proven reliability is unmatched for everything from pontoons to flats boats to deep-V hulls. That record of performance spawned a remarkable family line that continues with the F and F Whether your rigging is digital or mechanical, the entire lineup is compatible with your control preference.
Now, the F, F and F are available with either digital or mechanical controls. It also streamlines design, giving the F class-leading power-to-weight and making the F nearly 30 pounds lighter than its closest 1. Four valves per cylinder maximizes combustion efficiency in a way that no two stroke can, delivering the utmost in clean, quiet power and performance. A 10mm Offset Crankshaft allows for larger intake volume design. Four tuned intake tubes boost torque in low and mid-speed ranges for quick acceleration.
The Composite Intake Manifold is a lightweight, compact design, making these engines very versatile. Long Tube Intake Tracks are tuned to increase airflow, boosting low-end and midrange torque.
This means a more powerful hole shot and increased acceleration. Even with all this responsive power, an air silencer box and surge tank reduce air intake noise and air turbulence for smoother operation.
With up to amp alternators, our In-Line Fours provide plenty of power for a range of electronics, which comes handy, now that they're all compatible with digital controls. Extended Trim Range delivers better acceleration-to-plane and top-end speed. A Freshwater Flush Device allows you to flush the engine without running it, for added convenience and extended engine life. Yamaha's Shift Dampener System greatly reduces the noise commonly associated with shifting gears. Using a special design and components, much of the force of shifting is absorbed, resulting in far quieter and smoother operation.
The lightest DOHC outboard in its class, this I-4 is the perfect, lightweight hp solution for small- to medium-size boats. The F is 30 pounds lighter than its closest 1. All Jet model weights include the jet pump assembly weight estimated. I-4 Four Strokes Digital: hp, hp, hp. Owners Manuals. View the hp.
Compatible controls for every platform Now, the F, F and F are available with either digital or mechanical controls. Impressive Power-to-Weight. Optimum Power. Two-Stroke Performance from a Four Stroke.
Two-Stroke Performance from a Four Stroke Four valves per cylinder maximizes combustion efficiency in a way that no two stroke can, delivering the utmost in clean, quiet power and performance.
Quick Acceleration. Quick Acceleration A 10mm Offset Crankshaft allows for larger intake volume design. Powerful Hole Shot.Fish Here. Forum FAQ. New Forum Posts. Yamaha f I-4 pros and cons. View previous topic :: View next topic.
Looking at getting a pair of these. Anyone have any experience with them? I have the v6 version. My good friend purchased a 23 with the i4. After running it. Idles rough. Smooth mid range and top end. Good torque and power at the mid to upper rpms. Fuel economy seems good, but he's light on the throttle anyway. Servicing was easy as the v. Hope this helps. I just put one on my triton So far I'm impressed.
Quiet and great on gas so far. Plenty of power. I only have 5 hours on it tho. Mine is quiet at idle also. A F clone. I've put hours three thousand on a pair of F's. Oil changed every hrs,gear oil twice a year, fuel filter hrs,changed spark plugs once but don't it was needed.
I repowered my 21' Seacraft with one in the spring of and have around hrs or so on it. My MPG jumped from around 2. My top end is about the same but surprisingly the hole shot and mid range is better now than with the Merc. I have had no problems and the hr service I did myself and was easy to do.Yamaha exhaust kit install. F200 F225 F250
You do need to use the Reliance SDS prop or you will have prop chatter at idle. As far as quietness at idle the V-6 Yamahas at our Marina are definitely quieter than mine. I have been very happy and glad I made the decision to repower with this engine.
Thanks for the replies guys, sounds like the engines are liked moreso than not. I found a dealer with a pair of demo engines on his boat and will get to run them this weekend. Go to the Hull Truth forums and do a search.Page of 94 Go. Page 24 - Power trim and tilt switches twin binna Page 25 - Tilt support lever for power trim and ti Page 26 - Water separator Page 27 - Overheat warning indicator digital type Quick Links.
See also: Ower's Manual. Table of Contents. Yamaha FD Owner's Manual 81 pages. Edition LIT 69J A thorough understanding of these simple instructions will help you obtain maximum enjoyment from your new Yamaha. Page 5 Filling fuel Page 6 Table of contents Consumer information Page 7: General Information Record your outboard motor serial number in the spaces provided to assist you in ordering spare parts from your Yamaha dealer or for reference in case your outboard motor is sto- len.
Outboard motor serial number location See below for a description of your particular label. EMU Safety information Before mounting or operating the outboard motor, read this entire manual. Page Important Labels If necessary, verify the necessary replacement proce- dure with the dealer. Never illegally discard dump the product. Yamaha recommends consulting the deal- er on discarding the product. Be informed about boating safety. Additional publications and information can be obtained The wrong type of propeller could cause the boat to go in an unexpected direction, which could lead to an accident.
You should give the right-of-way to any vessels shown in white area you are the Give-Way vessel. Page 13 vessels, the operator should sound a pro- longed blast on the whistle 4 to 6 seconds.
If another vessel is around the bend, it too should sound the whistle. Even if no reply is heard, however, the vessel should still pro- ceed around the bend with caution.The new Yamaha F is an outstanding development in high capacity outboard engines. Rocky Balboa shed kilos by running up and down stairs. Yamaha has found weight reduction by changing from V6 format Fc to an ultra-modern and technically advanced inline 4.
The power to weight ratio is exceptional and this engine lends itself favourably to those owners restricted by transom weight, but wanting more grunt. This outboard engine offers boat owners the possibility to fit a new outboard engine to an incredibly wide range of boats.
Two versions of the new F will be available.
The FF, with a regular mechanical shift and throttle, and the FG, with an electronically-controlled, drive-by-wire shift and throttle. The sea trials were held in magnificent conditions in and around Wynyard. The sea conditions were calm with the obligatory mm of confused nor, nor wester. The high tide on the Inglis River allowed us to do some very accurate calm water testing.
Of course the Yamaha F was no exception and the whisper quiet idle is an industry standard with this class of outboard. Gear shifting and transitioning between forwards and reverse was effortless and smooth. Once clear of the pontoon and general wharf area we popped up on the plane and cruised down towards the ski area at a lazy nine knots. The F was sipping at the in-floor tank at a leisurely rate of 10L per hour.
On finding some clear water free of others we dropped the hammer and it is here you can see the variable cam timing come to the party. Bigger 4-stroke engines have been plagued by sluggishness to get off the bottom and into their strong mid-range.
The variable nature of the timing allows the best of both worlds. Specific engine tuning for bottom end punch allows an awesome bridge to the fantastic midrange attained by cc of engine displacement. As revs climb the cam timing electrickery-magic does its thing and we level out to allow a cruising speed of 24 knots at a fuel consumption of 22L per hour.
The mirror calm waters of the test site would allowed us to trim the new F right out and attain an impressive maximum speed. This is of course irrelevant as we all know that in reality, given changing sea conditions, we never get the opportunity to, want or need to run our boats at wide open throttle.Page of 82 Go. Page 23 - Power trim and tilt switches twin binna Page 24 - Tilt support lever for power trim and ti Page 52 - Flushing power unit Page 53 - Cleaning the outboard motor Page 54 - Maintenance chart Page 55 - Maintenance chart additional Page 56 - Greasing Page 57 - Checking fuel system Page 58 - Inspecting fuel filter Page 59 - Changing engine oil Page 60 Page 61 - Checking wiring and connectors Page 62 - Checking power trim and tilt system Page 63 - Removing the propeller Page 64 - Changing gear oil Page 65 - Inspecting and replacing anode s Page 66 - Checking battery for electric start mod Quick Links.
Download this manual See also: Ower's Manual. Table of Contents. Yamaha F Owner's Manual 94 pages. Yamaha FD Owner's Manual 81 pages. Outboard motor fb; lfb; fb; lfb pages. Outboard motor fc; lfc; fc; lfc pages. Edition LIT 69J If there is any To the owner question concerning this manual, please con- Thank you for choosing a Yamaha outboard sult your Yamaha dealer.
Page 5 Table of contents Operating engine Page 6 Table of contents Consumer information Page 7: General Information Record your outboard motor serial number in the spaces provided to assist you in ordering spare parts from your Yamaha dealer or for reference in case your outboard motor is sto- len.
Key number Page 9: Safety Information General information the rated horsepower capacity of the boat.Number 66 meaning
If the rated horsepower capacity of the boat is unknown, consult the dealer or boat man- ufacturer. Do not modify the outboard.
Modifications could make the motor unfit or unsafe to use. Incorrect propeller selection and incorrect use may not only cause engine damage, but also adversely affect fuel consumption. Page Important Labels Never illegally discard dump the product. Keep hands, hair, and clothes away from Yamaha recommends consulting the deal- flywheel and other rotating parts while er on discarding the product.
These Label counter rotation models rules determine which vessel has the right-of- EWM way, and what each vessel should do. Page 13 General information vessels, the operator should sound a pro- proceeding from open water into port, and longed blast on the whistle 4 to 6 seconds.
I-4 Four Strokes
If black buoys are to port left side. When navi- another vessel is around the bend, it too gating out of port, your position with respect to should sound the whistle.Gayatri mantra download mp3 songs
Yamaha does not recommended gasohol containing methanol because it can cause fuel system damage or engine performance problems. Page Battery Requirement Yamaha outboard motors are fitted with pro- pellers chosen to perform well over a range of applications, but there may be uses where a propeller with a different pitch would be more appropriate. Page Start-in-gear Protection For instructions on propeller removal and in- stallation, see page Owners of some Yamaha outboards are incensed at having to pay thousands to repair their relatively low-hour engines.
Recently, the BoatUS Consumer Protection Bureau has been made aware of dozens of reports regarding serious corrosion problems in Yamaha outboards, specifically tofirst-generation F models. Over time — the issue usually surfaces after to hours of use — the engine's exhaust gases appear to corrode the exhaust tube and sometimes the engine's oil pan, which is in the same area.
In some cases, he says, the oil dipstick can be blown out of the engine from the exhaust-gas pressure.
To date, six BoatUS members have reported to us that they've experienced this problem, and we've received similar reports from three other marine surveyors, on both coasts, who have examined this problem firsthand on other boats. In addition, Internet chat rooms and forums describe the experiences of many other owners who have similar problems with their Yamaha Fs; one owner, who reported that both his engines failed after only hours, compared the problem to "a youngster needing a hip replacement.
For its part, Yamaha duly repaired engines that failed during the warranty period. But because most recreational boat owners use their outboard engines less than hours per year, a three-year warranty means that many engines begin failing a year or two after the warranty expires. According to Yamaha, no service bulletins were issued about this corrosion problem, though it appears the company has created a parts kit specifically to address fixing it.
BoatUS member Steve Oetegenn from San Diego, California, was about to close the sale of his foot Seaswirl with twin Yamaha s, but during the final sea trial, the starboard engine began to smoke and the buyer walked. His engines had only hours of use. The frustrating part, says Oetegenn, is that if Yamaha had previously informed the technician of the potential problem, the engines could have been inspected for corrosion during a prior annual maintenance while still under warranty and perhaps been repaired, rather than ruined.
The worst part? Oetegenn had purchased an extended warranty for both engines, and it had expired only months before the engine failed.Shou wu chih amazon
Oetegenn wrote two letters to Yamaha to request assistance, and received a letter that said, because his engine was out of warranty, the company was unable to help. He now will have to spend thousands of dollars in repairs, just so he can sell his boat.
Other owners who followed Yamaha's maintenance procedures are also angry. In some cases, their dealers first tried to fault the owners by telling them that the corrosion stemmed from the owner's failure to flush the engine after every use.
But according to Paul Logue, a marine surveyor in Scituate, Massachusetts, who's inspected three ruined Yamaha F engines, that argument evaporates because the corrosion happens internally where no cooling water is present.
Many of the affected engines became damaged shortly after E10 was introduced. The design of a dry exhaust, he says, should take into account the hot exhaust gases from burned gasoline and its potential to corrode the metal.Theranos logo
A coating to withstand the gases is basic and not expensive or high tech, he adds. Indeed, the new replacement kit from Yamaha has parts with a different coating that seems to be effective. BoatUS contacted Yamaha by phone and letter to discuss this problem. In a response letter to BoatUS, the company sidestepped the corrosion issue and wrote, "The outboards you mention have been out of warranty for quite some time.
We would like to remind our customers that the best way to prevent the issues encountered is to flush the motor after every use with plenty of fresh water. From tomax horsepower ratings grew from around 3 to HP. In that jumped to HP.
Metal parts underwater are subjected to two types of corrosion: galvanic and stray current corrosion. While it's often possible to have the dry exhaust inspected by dropping the drive leg no more time-consuming or expensive than getting access to change the water pumpsometimes the damage can only be discovered with a special tool called a borescope that's snaked up inside, and even then the technician has to know what to look for.
If damage is found early enough, it may be possible to replace only the damaged exhaust pieces. If the corrosion is too advanced, engine replacement may be the only option. Join Today! To Magazine Home Page.Login or Sign Up.
Yamaha F exhaust corrosion. Posts Latest Activity. Page of 1. Filtered by:. Previous template Next. Yamaha F exhaust corrosionPM. My wife just bought me a boat for Christmas that came equipped with twin Yamaha F's. After doing an extensive engine testimonial search I stumbled across a common problem for these motors. They have an exhaust corrosion problem. Are all F series motors affected or the problem is more isolated to owner abuse? I have also found the kit to repair this problem and was wondering if the kit came complete with all the necessary hardware to successful "update" the problem.
Tags: None. Comment Post Cancel. Or, just the speedy sleeve and a new oil pump seal if you feel the pump is in good condition. The kit does not include these parts, but given that it is a 9 year old motor it might be prudent to install them when the motor is opened up. I would also remove both thermostats and check the bores into which they reside, for the presence of corrosion. YDS is simply a tool. I found the issue at key on engine off. Also since I have it all apart is there anything you guys suggest me to replace?
Is that just over for the whole exhaust stack?? I literally have a heart attack when I look at how cheap the parts are in comparison to NZ's. Last edited by greasyshaft ;AM. Also since my motor is 12 yrs old I will also be replacing the oil pump. Yes No. OK Cancel.
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