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I have 2005 50hp Yamaha 2 stroke. Great running motor, but
Hello, I have 2005 50hp Yamaha 2 stroke. Great running motor, but now will not idle down. The idle is always high even after being run at high speed. This has happened before and I had it serviced with a techcarburetor cleaning. … read more
Charles
Charles
Certified Mercury Tech
5,190 satisfied customers
Are 90's acceptable compression for a 2005 Yamaha 4 stroke
Are 90's acceptable compression for a 2005 Yamaha 4 stroke engine … read more
Charles
Charles
Certified Mercury Tech
5,190 satisfied customers
Are 90's acceptable compression for a 2005 Yamaha 4 stroke
Second opinion] Are 90's acceptable compression for a 2005 Yamaha 4 stroke engine … read more
Jason
Jason
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Vocational, Technical or Trade Scho
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I have a 2004 Yamaha f40 four stroke it won't run at idle
I have a 2004 Yamaha f40 four stroke it won't run at idle but if u work it back and forth it will finally run top speed. the carbs were cleaned and all new needles installed. I have put new plugs new … read more
Jason
Jason
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In neutral boat runs fine I can increase rpms all the way up
in neutral boat runs fine I can increase rpms all the way up idles great all new fuel and filters put boat I gear fine at 15 hundred rpms bogs when trying to increase rpms would start to decrease agai… read more
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Jason
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I have a 2008 Yamaha 90hp four stroke outboard that stalls
I have a 2008 Yamaha 90hp four stroke outboard that stalls at very low speed. It also has difficulty re-starting after I have taken it out fishing. A mechanic replaced the IAC (idle air control valve)… read more
Jason
Jason
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Vocational, Technical or Trade Scho
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I am thinking about buying a 2005 boat with a 2005 yamaha
Hi Jason, I am thinking about buying a 2005 boat with a 2005 yamaha vmax hpdi 250. Would you take a chance on the this motor or go with a four stroke.… read more
Jason
Jason
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I have a 225 four stroke Yamaha 2004 after running at
I have a 225 four stroke Yamaha 2004 after running at cruising at speed say 4000 Rpms when it is returned to idle engine surges Rpms up and down… read more
Jason
Jason
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I have a 2005 F40 four stroke Yamaha outboard and the carbs
I have a 2005 F40 four stroke Yamaha outboard and the carbs constantly clog. I change fuel regularly, put in an additive, run the carbs dry after use. I use the engine so infrequently that the fuel is… read more
Jeff G.
Jeff G.
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Two months ago my 40 hp Yamaha ran like new. Yesterday I took it out and the only way it
Two months ago my 40 hp Yamaha ran like new. Yesterday I took it out and the only way it would even run was to crank it while jacking the throttle and at idle it would keep losing RPM and die. The pri… read more
Jeff G.
Jeff G.
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I have a 2005 Yamaha 50 hp four stroke that was sitting for
I have a 2005 Yamaha 50 hp four stroke that was sitting for 2 years after a service at the Yamaha dealer, got it back home, it started and idled perfect, then shut it down for a few days, now when I s… read more
Charles
Charles
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i have a 2008 yamaha v150tlr 4 stroke carb out board ...when
i have a 2008 yamaha v150tlr 4 stroke carb out board ...when the engine is cold ( after it sets for several days ) the engine starts but will not stay running..it takes several starts before it stays … read more
Jason
Jason
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Vocational, Technical or Trade Scho
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Issue with 2001 Yamaha f50 outboard. Issues starting, idle
Issue with 2001 Yamaha f50 outboard. Issues starting, idle is rough and runs really rough when riding along between 2000 & 3000 RPM, at this speed (2k-3k RPM) it sounds like a cylinder kicks in and ou… read more
Tech Tom
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Working on a 2004 115 yamaha four stroke fuel injected outboard.
Working on a 2004 115 yamaha four stroke fuel injected outboard. Mod # XXXXX It went from runnig just fine one day to lacking power the next as in rpms at 5200 down to 3800. Plugs and fuel filters cha… read more
orcamarine
orcamarine
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Your answer was exactly correct. They finally rebuilt and cleaned
Your answer was exactly correct. They finally rebuilt and cleaned the carbs and it runs great. I have another issue I have a question about. The electric choke that is supposed to work by pushing the … read more
Jason
Jason
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I have a 2008 yamaha two stroke 50 HP. First time leaving the
I have a 2008 yamaha two stroke 50 HP. First time leaving the ramp, the boat runs great with a minor engine cut out @ 2000 rpm. After shutting down the engine, then trying to throttle up again, the en… read more
orcamarine
orcamarine
Proprietor
Vocational, Technical or Trade Scho
7 satisfied customers
My yamaha 2005 115 four stroke started idling rough about 4
My yamaha 2005 115 four stroke started idling rough about 4 weeks ago. Sometimes it would miss while running full throttle. Just last week it cranked fine in the morning, but almost didn't crank after… read more
Whitecap36
Whitecap36
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Vocational, Technical or Trade Scho
1,545 satisfied customers
Hi i recently fitted a 2004 yamaha 250 hp vmax hpdi engine
Hi i recently fitted a 2004 yamaha 250 hp vmax hpdi engine to my boat i bought new digital clocks for it everything is working fine but the high temp alarm and the alarm for the water separator why ar… read more
Jason Forsberg
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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