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Oct
The loose flywheel issue could lead to major powerhead failure. Replaced impeller but still overheat alarm after running 5 min at 50.
Though wed still suggest using a fuel additive like Formula X2 if your gas is likely to sit for more than a few weeks at a time.
25 hp yamaha outboard problems. Yamaha 25 HP 4 stroke problem the bulletin is for applications sspecific to what you mention. There is a relief hole on the exhaust tube that was found to be the culprit this hole was moved higher and baffled. You may even get it under warranty.
Cant hurt to ask. Yamaha 25 hp outboard. I have a 2001 25 hp yamaha model 25MSHZ.
Last winter I burned up the pump housing so I tore into the lower unit to replace the pump. The telltale has great discharge before I changed the pump it did not. Now however I have a new problem and I am having trouble fixing it.
I know your post is a few months old now but Im wondering if you were able to solve your problem. I also have a 25 HP Yamaha outboard with I think the same problems. Mine is year 2000 and came to me second hand.
At fisrt it would not start unless I held my hand over the air intake to choke it then after a long warm-up it would idle. It is believed that premature engine failure and related issues are linked to a manufacturing or design defect in the coating of the exhaust components. Allegedly this defect allows hot gases to corrode the exhaust passages which in turn can lead to holes in the passages and can eventually cause a loss of horsepower smoking and engine failure.
Since the system is pressurized and the fuel isnt exposed to the air you can forget about all the most common ethanol problems like gunky clogged carburetors. Though wed still suggest using a fuel additive like Formula X2 if your gas is likely to sit for more than a few weeks at a time. 1998 yamaha 25 hp two stroke Not rated yet I believe Im getting water in the lower unit.
Drain lube appears to be cloudy and lighter colored than the original lube when left in a clear container. I have a 25 hp Yamaha 2 stroke that will not idle. I start it and quickly shift into gear and give it throttle.
Runs fine at speed. When I let off throttle it stalls. Can you give me any more details about your issue.
Check the fuel lines connecting the outboard motor to the fuel tank. If any breaks or leakages are found immediately stop use of the outboard motor and take it to the shop for repairs. If gummy or watery fuel is found have the fuel tank drained by a Yamaha dealer to remove any contaminated gasoline.
A problem in the fuel compression or ignition systems can cause poor starting loss of power or other problems. This basic troubleshooting and possible remedies and covers all Yamaha outboard motors. Therefore some items may not apply to your model.
If any more questions please consult your Yamaha dealer or the experienced service shops. For other uses see outboard wont start carburetor At some point in time that Yamaha motor mounted on the stern of your boat is not going to turn on and begin to work. An outboard engine that will not start is defined as.
Engine cranks but wont start engine wont crank over at all starting the engine is difficult. Recurrent overheat problem on yamaha 25 hp 4 stroke. Replaced impeller but still overheat alarm after running 5 min at 50.
If I hook up water hose to. Yamaha Outboard 25 HP - Yamaha Outboard Forums. Personally I would avoid the 350s.
The issues are real and although they have supposedly been fixed in later models Yamaha had to extend warranty and promise to replace flywheels as necessary and some folks had to have that done several times. The loose flywheel issue could lead to major powerhead failure. Our 432-cc 25-hp portable outboard sports a new streamlined portable design and class-leading power-to-weight.
In fact its the lightest 25-hp outboard on the watertwo-stroke or four-stroke. While its streamlined design is 25 percent lighter it still packs exciting features like battery-less EFI. How to Replace a Water Pump on a 25 hp Yamaha Outboard - YouTube.
Watch our Yamaha Outboard Fuel Pump Issues video above in which we guide you through an outboards fuel system to troubleshoot possible issues that may be causing fuel pump problems. Although were using a Yamaha 250HP motor as an example the fuel system will be very similar on any modern outboard regardless of brand or model. Yamaha Four-Stroke Outboard Motor Corrosion Defect Complaint.
The complaint for this lawsuit alleges that Yamaha Motor Corporation USAYamaha fraudulently sold a line of four stroke outboard motors after it became aware that the engine design had a safety defect that caused component parts to prematurely corrode in violation of California Consumer and Unfair Competition. Mariner Yamaha 4 HP outboard Starting Problems. 25 Jul 2012 1 A.
Joined 4 Mar 2012 Messages 127 Location Fareham Hants. Hi I have a 4HP 1980s vintage Mariner outboard Yam built 6E0 engine earlier shear pin. 2007 25 hp Yamaha 4-Stroke Start Issues 07-11-2019 1206 PM.
F25MLHF Use and Maintenance. Located in Nova Scotia Canada. The outboard is used about once every week or two from April through October.
The outboard typically starts well when cold and soon after turning off. To start the motor I open the vent on the gas tank. Fish004 New Member.
I recently purchased a 16 foot aluminum boat this spring with a newer 25 hp suzuki 4 stroke tiller engine. I have only had it out about 5 hours so far due to being busy. Today I had it out on the lake and it ran perfect all day started first pull and everything.
After being out trolling for two hours I drove it in at full speed. This legendary twin cylinder 4-stroke portable is now around 25 lighter. Open the throttle of our.
Add to Wish List. 2019 Yamaha 25 HP F25LC Outboard Motor. Yamaha F25LC Four Stroke Horsepower.
Motor May Experience Sputtering Or Powe Loss Issues. Some of the Mercury 25 HP 4 stroke motor users have complained that the motor sometimes sputters or constantly loses more power than usual. This particular issue occurs when they take out their outboard to use after several months of not using.