20 Most Recent Yamaha 12V Air Pump Questions & Answers

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I need the spark plug gap for a 2001 Yamaha 115hp

For a 2001 Yamaha F115 4 stroke use NGK Plugs LFR6A-11 gapped between 0.039 and 0.043
7/10/2018 9:51:49 PM • Yamaha 12V Air... • Answered on Jul 10, 2018
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5answers

I have a 2002 Yamaha FX140 Waverunner.Fuel problem or electronic?

you have fouled spark plugs change them all fixed all the newq yamaha sare doing it it is the in thing to do
5/8/2018 12:28:02 AM • Yamaha 12V Air... • Answered on May 08, 2018
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I have a 1999 yamaha

You must try to crank it by hand ,remove spark plugs so there will be little compression and then try to turn the motor it should turn without to much force this will indicate the motor has not seized when hooking up a jump start do not connect both leads directly to the battery ! the red + lead should connect to the red+ on both batteries but the neg lead - should not go to the battery post but to a ground usually directly to the metal engine cover or you can damage the battery !
11/25/2017 11:37:11 AM • Yamaha 12V Air... • Answered on Nov 25, 2017
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2answers

Have 1997 yamaha gp1200...starts and idles

indicates that a component in the ignition circuit is overheating internally and failing could be a coil or cdi unit or any sensors if fitted
6/21/2017 4:26:54 AM • Yamaha 12V Air... • Answered on Jun 21, 2017
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Cavataion with my 800 yamaha waverunner will not

check hull type as a freshwater hull and a sea hull are different as sea water has a higher level of buoncy .Although i doubt if you will encounter a freshwater hull but it is a thing to think about and check.Main cause though could be lack of engine power for whater reason .
4/24/2017 7:11:11 AM • Yamaha 12V Air... • Answered on Apr 24, 2017
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1996 yamaha waveraider 700 Thermo Switch Assy what dose it do?

Yamaha 60E-82560-A1-00 Thermo Switch ASSEMBLY ...

? 2:22 www.youtube.com/watch?v=n2DMKPy8mys Jul 15, 2013 - Uploaded by PartsPak6 Buy Yamaha 60E-82560-A1-00 Thermo Switch ASSEMBLY at: http://www.PartsPak.com/ProductCart/pc ...
7/28/2015 11:55:04 PM • Yamaha 12V Air... • Answered on Jul 28, 2015
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Why does yamaha waverunner fx cruiser ho not run in lake but will run hooked to water hose

Sounds like you have a bad stator. It may be producing enough spark to start the motor, but under a load (as in the water) it simply can not supply the amount of spark needed. Sometimes when a stator is tested on a ohms meter it may test good, but still be defective do to the load it will come in contact with when put in the water.
7/28/2015 11:22:27 PM • Yamaha 12V Air... • Answered on Jul 28, 2015
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1997 waverunner 760 will run fast for 50yd then die fuelline & filter full of gas

does this happen repeatedly or just sometimes? check the one way vale and the line its attached too on top of the fuel tank then make sure theres no water in the fuel filter, if there is water in the filter it should be visible and kind of look like a bottle of salad dressing or oil and vinegar before its been shaking up.
6/22/2015 5:29:13 AM • Yamaha 12V Air... • Answered on Jun 22, 2015
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No fuel to carbs waverunner yamaha XL760

I have one as well. Same problem and it got worse until I had to prime the carb to run. Fix is simple. 2 carb kits off eBay. Approx $30 ea new. Takes about 2.5 hours to do. I have never done before so I thought it was easy. What happens is the carbs have rubber diaphragms in them that act as a fuel pump. My old ones were really thin and worn. The new ones thicker and better. Put it back together and viola. It starts on it's own. I checked all forums about shut offs and external primers, pop pressure etc. Just rebuild your carbs. You'll be fine.
6/24/2014 5:26:23 PM • Yamaha 12V Air... • Answered on Jun 24, 2014
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How to install check valve in Mikuni carb

Which check valve are u referring to? On the metering plate under the main diaphragm or the fuel pump side? The metering plate valve is held in with a plate and single screw the other side is held in with rubber grommets.
6/24/2014 5:16:50 PM • Yamaha 12V Air... • Answered on Jun 24, 2014
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Rear seat removal, fx yamaha jet ski, latch will not release the seat

As bad as this sounds its the only way. Grab yourself a 2x4 and a nice size prybar.Lay 2x4 across the back grab handle as to not damage it then put prybar directly under seat latch and pop it up.
6/24/2014 12:38:20 PM • Yamaha 12V Air... • Answered on Jun 24, 2014
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What is the thread on coupler to midshaft left or Right? this is on a yamaha waverunner 1200xl limited

Counter clockwise, it has normal right handed threads. The only part with left handed threads is the pump/impeller shaft.
5/31/2014 6:48:01 AM • Yamaha 12V Air... • Answered on May 31, 2014
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I have a Yamaha boat Exciter 1999 with two engine

I have a 1998 Exciter with the same problem and the engine was replaced last year. Any answers yet?
Tom
9/26/2013 5:18:46 PM • Yamaha 12V Air... • Answered on Sep 26, 2013
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