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Rebuilt a carb on a 25hp f252012 4 stroke yamaha and did not
hi, rebuilt a carb on a 25hp f252012 4 stroke yamaha and did not count how far the pilot screw was inserted motor is running rough at idle bogs when giving it throttle. i have a service manual and it … read more
Jason
Jason
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Vocational, Technical or Trade Scho
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I have a Yamaha c40tlrx with an idling problem. New fuel
I have a Yamaha c40tlrx with an idling problem. New fuel pump, plugs, cleaned carbs. Compression 120-125 all cylinders … read more
Charles
Charles
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2000 Yamaha f100 four stroke. I've owned it since 2005. I've
2000 Yamaha f100 four stroke. I've owned it since 2005. I've pulled the carbs and cleaned them. Idles nicely and runs great above 3500 rpm but doesn't accelerate smoothly. I replaced the little 10 mic… read more
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I have a 1998 Eviinrude 4 stroke outboard. The engine idles
I have a 1998 Eviinrude 4 stroke outboard. The engine idles fine, but when I accelerate, the engine back fires thorugh the carb. I've gone through the carb and it looks fine. What do I need to do to s… read more
Noel Schembri
Noel Schembri
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I have a Mercury 3,5 HP 4stroke that I purchased about 4 years
I have a Mercury 3,5 HP 4stroke that I purchased about 4 years ago. The motor runs fine up to about 1/4 throttle and then gets quite rough as the RPM's are increased. I installed a new spark plug, com… read more
Jason
Jason
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Vocational, Technical or Trade Scho
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Hello, I have a 2006 Yamaha 25 HP 2 stroke outboard. Motor
Hello, I have a 2006 Yamaha 25 HP 2 stroke outboard. Motor has less than 65 hours on it. Problem is the motor will backfire at idle or low speeds. When at idle, the backfiring is enough to make the mo… read more
Jason
Jason
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Hi have a problem with my 25hp yamaha 1996,it seems to have
Hi have a problem with my 25hp yamaha 1996,it seems to have a miss when idleing,when i put it under load it splutters and will slowly die,runs okay at half to thre quarter power… read more
Jeremy R.
Jeremy R.
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I have a 1991 25hp evinrude outboard motor . A shade tree mechanic
I have a 1991 25hp evinrude outboard motor . A shade tree mechanic ran a compression test.The lower piston was 100 lbs , the upper 115. He said the motor would need to be rebuilt. The cost would be $2… read more
Charles
Charles
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Hi. No idle issue on a 1987 Yamy 2 cyl. ,2 stroke. Just installed
Hi. No idle issue on a 1987 Yamy 2 cyl. ,2 stroke. Just installed the Yamaha carb kit, same issue, NO idle. I do see a "wet" fuel line on the fuel pump "in". Replacing all fuel lines this afternoon. T… read more
James
James
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I have a 60 hp mercury elpto 2 stroke. It is missing, especially
I have a 60 hp mercury elpto 2 stroke. It is missing, especially in idle. It also seems to "sneeze" when the rpms drop and smoke comes out from just under the cowling. The rpms will drop for just a mo… read more
Jeff G.
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I have a 2004 johnson /bobardier 15 hp 4 stroke motor. . I
I have a 2004 johnson /bobardier 15 hp 4 stroke motor. . I accidentally sank it, hydroed it and immediately cleaned out it started but ran rough . i took it to a certified mechanic and they said they … read more
Jeff G.
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I Have a 2001 Yamaha Fourstroke 25hp that runs well at top
I Have a 2001 Yamaha Fourstroke 25hp that runs well at top speed, but coughs and sputters at low speeds. Changing the spark plugs and fuel filter had no effect. I use Yamaha ring free additive, and a … read more
Whitecap36
Whitecap36
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My 1994 90 HP yamaha 3 cylinder runs great at low speed but
My 1994 90 HP yamaha 3 cylinder runs great at low speed but when I throttle up it starts to bog then it almost quits until I throttle back then it runs fine. I took apart the carbs and cleaned them, c… read more
Jeff G.
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My 9.9 Yamaha is cutting out when I put into gear.However if
My 9.9 Yamaha is cutting out when I put into gear.However if I put fingers over carb intake and bring more fuel in, it keeps going.The petrol pump seems ok and pilot screw is out 3 turns as per manual… read more
Tan
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I have 2006 Model Yamaha 50Hp (3 cyl), which starts well and
I have 2006 Model Yamaha 50Hp (3 cyl), which starts well and runs well at normal and full speed. However at idle (warm or cold) the Motor has a bad miss then backfires and then choke's. This has gotte… read more
Scott Martin
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Hi i own a 2006 yamaha 25hp 4 stroke outboard it is a base
Hi i own a 2006 yamaha 25hp 4 stroke outboard it is a base model with no electric start or tilt trim. i bought it second hand with the prior owner stating it had about 180hours use. I have just comple… read more
Whitecap36
Whitecap36
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Hello, working on a carb cleaning for my 2003 F40TLRB, took
Hello, working on a carb cleaning for my 2003 F40TLRB, took it apart because of rough idle and stalling even after synching carbs. My pilot jets and main jets had some gunk on them, needle valves look… read more
ROCKET
ROCKET
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my 25hp yamaha starts just fine but when you go above an idle
my 25hp yamaha starts just fine but when you go above an idle it spitters back fires through the intake put in gear and increas throtle it still sputers but not as bad i have replaced the carb with a … read more
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