Question about 2003 Yamaha YZ 125

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What oil should i have in yz 125 2 stroke

I have a yz 125 2001 model what oil should i have in the clutxch and transmition?

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  • RYANDUNDAS1 Apr 20, 2009

    okay thank you
    what is the diffrence between transmition oil and motor oil? where do each oils go?
    what oil should i put in the oil cap on my bike?

    Ryan Dundas

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The clutch and gearbox share the same oil. The oil for the motor is 10w40. Stick with the major brands; Pennzoil, Quaker State, Mobil, Yamalube or Shell.

Posted on Apr 19, 2009

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Alot of the motor oils for cars have additives that if used in mororcycle clutches will cause the clutch to slip. DO NOT USE OIL that is NOT recommended for cars. Maxima, golden spectro, amsoil, Yamalube, are fine....Stay away from the penzoil and such

Posted on May 05, 2009

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I used a car oil in my 2002 CR125R and it was not wet-clutch compatible and my clutch plates stuck together, the clutch was fine, just each plate needed to be cleaned before reinstalling.

Maxima is a great motorcycle oil, they make a special line for 2-strokes called MTL they have 75W, 80W, 85W it's a Great product.

Posted on Jul 28, 2009

  • Linda Edwards
    Linda Edwards May 25, 2015

    Where do I get the maxims oil and how to much do I put in a 2003 yz125 2 stroke

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1 Answer

I dont know what oil to buy for my yz 125 03 model what oil should i get?


Mix to 32:1 and jet to get the plug to burn chocolate brown...
Golden spectro is good
Maxima
Belray
Yamaha makes an oil that's not bad
Honda oil also is good
Klotz
(All of these are specific two stroke mix oil)

May 20, 2011 | 2003 Yamaha YZ 125

1 Answer

How much motor oil should go in a yamaha yz 125 from 2001


Hi, Ballinbllr5 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.
2002 yz125 How much Oil Yamaha 2 Stroke
2000 YZ 125 Transmission Oil Change Tips
YAMAHA YZ125 Owner Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Apr 14, 2010 | 2004 Yamaha YZ 125

1 Answer

What kind of oil do i need to mix in a 2002 yz 125?


You have a 2 stroke dirt bike, off road only, without oil injection. Get a gallon of 2 stroke oil, get the mix from the owners manual or the dealer, should be about 1 pint per tank? Or 4 oz per gallon. It might be more. Don't try to get away with burning motor oil in there, it won't work, it will overheat the engine and could do some damage. Hope this helps.

Apr 03, 2010 | 2003 Yamaha YZ 125

1 Answer

What is the ratios of oil to gas?


32 to 1 equals 4 ounces two stroke engine oil per one gallon of gas. Be sure to use two stroke engine oil and not motor oil.10w40 motor oil is for the gearbox.

Dec 19, 2009 | 2003 Yamaha YZ 125

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

What oil for yz 125?


I would use maxima mt 75w gear oil in all 2-stroke trans.

May 01, 2009 | 2003 Yamaha YZ 125

1 Answer

Oil for yz 125


yes that will work BUT,i have a 03 660 raptor and all i use and recommend is yamahlube.

Apr 26, 2009 | 2003 Yamaha YZ 125

2 Answers

Diffrences betweein oils


your bike does not use tranny oil.only motor oil.your gears are lubricated by your motor oil as well as your clutch.it works by a sump system.I use yamahlube for my bike.

Apr 20, 2009 | 2003 Yamaha YZ 125

2 Answers

Puting wrong oil in transmition


The problem did not start untill the 10w30 Honda transmission oil went in. It isn't the 10w30 thats the problem. It's the TRANSMISSION oil as opposed to MOTOR oil. There is a difference. As I said before, the swelling may or may not go away.

Best wishes Ryan :)

Apr 19, 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

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