Question about 2004 Yamaha YZ 250 F

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Oil I put the wrong oil in my yz 250 yamaha. i used engine oil instead of 2 stroke fuel oil. it wont start now ?

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  • Anonymous Mar 12, 2014

    how can i cheak the oil in a yz 250 2 stoke

  • Anonymous Mar 19, 2014

    what kind of oil is used in the induction tank on a 72 Yamaha 250

  • Anonymous Mar 20, 2014

    My 1991 yz 250 wont start I have spark to the plug and a new plug but doesent seam like the spark is very strong its got good compression I was rideing it and it just died and didn't have spark so I got rid of the kill switch and now has spark but wont start what could be wrong

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Drain the fuel, locate the float bowl drain screw, lowest screw on the carb and loosen it to drain the carb. replace the fuel with proper pre-mix, replace the spark plug and it should be fine

Posted on Nov 10, 2008

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1 Answer

What oil do I put in my yz 250


Hi, Anonymous for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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Jul 17, 2012 | 2003 Yamaha YZ 250

1 Answer

Drain plug size


Hi, Pollythepant M10x1.25x15.5 for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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May 27, 2012 | 2004 Yamaha YZ 250 F

1 Answer

Where abouts is the gear oil check level bolt on a yamaha yz 250 two stroke?


Hi, Tomasxoniell for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
gear oil check level bolt on yamaha yz 250 Google Search
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Sep 14, 2010 | 2003 Yamaha YZ 250

1 Answer

I would like to know what kind of gear oil to put in my 06 yz 250


Calls for 10w/30. Any brand of mc specific oil will work. ie: Yamalube or Honda GN4 or the more expensive stuff will all work. On the cheaper side, you can use Type F (only) automatic transmision fluid. Just watch the color and change it when it starts getting dark.


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May 12, 2010 | 2004 Yamaha YZ 250 F

2 Answers

2003 Yamaha 125 yz plug fouls pretty quickly. running 32/1 fuel oil ratio, and using NKG plug 2411/B8ES. Do we need to run a hotter plug?


NGK BR9EG is the stock plug for your bike. You are one heat range hotter already. I suggest you go to a BR8EG to keep you in the racing plug style but one range hotter than stock. I question what 2 stroke engine oil you are using. Stick with Yamalube 2 stroke oil and you should be okay. If you are using standard motor oil like you have in the gearbox then the fouling is definitely the oil.

Oct 27, 2009 | 2003 Yamaha YZ 125

1 Answer

Putting wrong transmition oil in yz 125


Nothing significant, don't worry about it. You do NOT want oil marked EC, signifying energy conservation. Such oil will cause the clutch plates to slip and premature clutch wear. If the oil you put in does say EC on the small round type seal simply drain it out and put in the correct oil. Not critical but the sooner the better.

Apr 19, 2009 | 2003 Yamaha YZ 125

2 Answers

Engine oil in yz 250


On Two-strokes you mix the oil and the gas together. If it has an oil pump the bike will do this for you if you fill up the oil tank.

Apr 12, 2009 | 1982 Yamaha XJ 650

2 Answers

Do i have to mix 2 stroke oil on the gas for the 4 stroke bikes or just add regular gas on the tank? if is what is the scale for the mix?


DO NOT mix oil in the gas on your four stroke engine. You will foul the spark plug(s), build up deposits on the valves and head, and make a smokey, smelly mess. A two stroke engine uses the fuel/oil mix to lubricate the engine before being used as fuel. A four stroke engine has a separate lubrication system and does not normally burn any oil. As the name implies, a two stroke engine works in two strokes. The first stroke is downward, where the fuel/oil mix and air are drawn into the cylinder. The momentum from the crankshaft counterbalance or force from the other cylinder(s) drive the piston back up compressing the mix, and the spark plug sparks at or slightly before the top of the stroke. The rapid combustion of the fuel/oil/air mix drives the piston down, which is the power stroke, and then the cycle starts all over again. A four stroke engine has an intake stroke down taking in the fuel/air mix, a compression stroke up, a power stroke down as the fuel/air mix is ignited at or before the top of the stroke, and a exhaust stroke up before starting all over again. A four stroke is much cleaner and more reliable than a two stroke, but it is heavier and has less torque. A two stroke engine is much lighter and has more torque, but takes more maintenance.

Feb 28, 2009 | 2003 Yamaha YZ 250 F

2 Answers

Oil out of tail pipe


Hi,
This is not uncommon.
Things to check first would be your fuel mixture. You might be running a bit rich. You should be using a mix of 3.5 percent synthetic oil.
Being a 2 stroke, the tail pipe cartridge needs replacing from time to time, as it does collect oil with time. If the bike is a bit noisey change the packing.
Always remember that there is oil in fuel used on 2 strokes.
Lastly check the type of oil you are using. Mineral oil does tend to be a bit messy as the mixture requires around 5 percent oil.
Most off road stores now keep good LOW SMOKE oils such as Motrex.
Stick to good synthetic oils !
Cheers
Jon

Feb 16, 2009 | 2003 Yamaha YZ 250

1 Answer

I put high octane fuel in my gillerra moped / two stroke . Now it wont start?


Do you have to mix oil and gas or is there a separate tank for oil?

Dec 07, 2008 | 2004 Yamaha YZ 250 F

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