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Check the engine oil levels next. If its still not starting youll want to consult a professional to inspect the electrical system.
I put about 100 hours a year on it for four years.
Yamaha 70 hp 4 stroke problems. 24 May 2019. Hi all could anyone explain why the following could be happening. I recently bought a 17 foot Boston Whaler Montauk with a 70hp 4 stroke Yamaha outboard.
The outboard is in fine condition with low hours and starts and performs perfectly until the other day when I took the kids fishing and idled. New yamaha 70 hp 4 stroke problem I dont know why they changed the prop or lowered the motor. They told me that is the set up they always used on that boat.
If was thought the boat was cavatating. The boat runs very well when it is not having the problem. Yamaha 70 hp 4 stroke F70 cold start in 1 key crankEthonal gas kills these outboard motor gaskets etc.
Even the external fuel line gets eaten alive after j. Alarm from console at neutral from 70 hp four stroke. I get a loud beeping alarm from the console when the engine is in neutral.
Its not overheating because it starts straight away with a cold start too. At the same moment I shift in gear forward or reverse the alarm stops. Oil level checked and ok.
With a motor at the high end of the HP range for the boat the cruise speed will be higher than it would be with a less powerful motor. So with the relatively light 15 and a 70 classic 2-stroke or newer 4-stroke the boat is going to get its best mileage which is the definition of cruise speed right running fast and flat just scooting along. When its completely charged reinstall the battery and cables.
Remember to connect the positive first and the negative second. Once thats done you can try the Yamaha outboards starter again. If its still not starting youll want to consult a professional to inspect the electrical system.
I have 2013 70 HP Yamaha 4 stroke has 10 hrs on itFuel injected. 1 week ago started fine run for 45 minutes ideled through shallow water trimed to about 25 degrees motor killed took about 40 minutes to start. After starting ran fine.
Took out again this week started and ran fine same situation ideling with some trim killed and would not start. I kind of think the 70-115 HP bracket is long over due for some light weight models some are OK at certain HP but others weigh heaps people replacing the old Yamaha 90 and the OMC V4s are being sadly done over for suitable replacement choice some of the old 115 repowers went to the Suzuki 140 because of the weight but those with say an old 3 cylinder. It has been alleged that the companys first-generation F-Series four-stroke outboard motors model years 2000 2005 contain a serious defect that allows the exhaust passages to corrode and pit severely ultimately resulting in.
Wow 10 micron and fuel water separator under cowlings with 2019 YAMAHA 70 hp. I poured the fuel into a clear container and didnt find any water but did find a lot of small solid rock from the gas i got from gas station. I cleaned dried and vacuumed my tank before i filled new gas to be used it for my new outboard.
The Yamaha outboard forum marine engines will help you find answers to Yamaha outboard problems 4 stroke Yamaha outboard problems 4 stroke Yamaha 40 hp 4 stroke problems Yamaha 200 outboard problems Yamaha 4 stroke outboard problems Yamaha 50 hp 4 stroke problems Yamaha 60 hp 4 stroke problems and Yamaha 70 hp 2 stroke problems plus a lot. Oct 4 2015. Have a 1997 70 HP Yamaha 2 stroke.
Have replaced impeller checked thermostat is opening pulled bottom leg off and had hose stuffed up water intake pipe and water seems to be getting up into cylinder head water jacket. Have removed cylinder head and exhaust covers and cleaned out all of the salt. Check the engine oil levels next.
Ensure that the outboard motor is in an upright and level position. Then remove the oil filler cap and the connected dipstick from the oil tank. Wipe the dipstick with a cloth reinsert it fully then remove it and check the oil mark on the side of the dipstick.
Yamaha F70A specs. PRICE 10400 long shaft RRP. TYPE Four-cylinder four-stroke 16-valve EFI outboard motor.
RATED BHPMHP 6970 at 5800. RPM RANGE 5300 to 6300. BORE X STROKE 65 x 75mm.
WEIGHT 119kg dry long shaft. 121kg dry extra-long shaft OEDA stars 3 Brake horsepowerMetric horsepower. Yamaha 70 hp 4 stroke F70 hole shot - from zero to hero - YouTube.
Yamaha 70 hp 4 stroke F70 hole shot from zero to hero1. Lensko - Lets Go. The Yamaha 70 is in this weight class and would provide 10 more HP.
But honestly the for the extra cost for the yamaha you wont noticeably gain any HP Torque or reliability. The f70 was redesigned over 5 years ago and is light for its class considering a 2 stroke yamaha 70 is 228lbs and the f70 is 257lbs. Hi All Have recently just purchased my first motor boat had a small yacht previously a Quintrex Freedom Sport 480 with a 2 stroke 70hp Yamaha bought new November 2005.
Just had my 1st 10hour service and been informed of the following problem. They advised I have a lot of corrosion around the cylinder block and spark plugs which is unusual for such a. So even though Yamaha is the topmost outboard engine manufacturer Suzuki is the winner here.
When you run the engine at about 3500 rpm Yamaha will make noticeable noise as most engines do. As you increase the rpm the engine will make even louder noise. At idle condition Yamaha makes noise to some extent as well.
I bought a Yamaha 100-HP four-cycle outboard motor when they first came out and put it on my 16. It got between 45- and 6-MPG depending on load and conditions. I got it serviced every year and it ran like a top.
I put about 100 hours a year on it for four years. I sold the boat three years ago and have stayed in touch with the. Learn from the experts how to check the oil in a Yamaha Four Stroke Outboard.
Checking and changing the oil on your motor will help performance and efficienc. Simply select your outboards make year HP and model and pick the OEM parts you need for your engine. For example on the Yamaha 250HP LF250TXR outboard parts page click on Fuel 1 to find the primary fuel filter.
Click on Fuel Injection Pump 1 to find the fuel pump. And click on Fuel Injection Pump 2 to find the secondary fuel filter. 70 HP 4 stroke EFI Yamaha.
Tue Jul 13 2010 1259 pm Location. Yamaha F70 or T60. 3 Post by rancherlee Wed Aug 01 2012 801 pm Both have the same displacement and lower unit take the T60 OR make the jump to the F75 for a bigger block.
On a standard pontoon I find the lowest rated HP of a. If you removed the large green and blue wires from the relay and applied power ground to them then you did indeed directly test the motor. And if it did not then run the motor is the problem.
And btw the trim gauge and its indicating sensor are completely separate from the trimtilt mechanism - so thats.