Question about 2003 Yamaha YZ 450 F

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WHERE IS THE FILL PLUG ON A YZ 426

I FOUND A FILL PLUG ON MY YZ 426 THAT I JUST PURCHASED ON THE FRAME BETWEEN THE HANDLE BARS AND GAS TANK AND WAS WONDERING IF THAT WAS FOR THE OIL

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  • Roberta Smith
    Roberta Smith May 11, 2010

    is there a dipstick ?

  • Anonymous Mar 12, 2014

    I need a wiring diagram manual for yz 426 f

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  • 46 Answers

Hi,

Yes, this is where you fil the motor oil.
Don't overfill, this bike uses a dry sump.

Cheers
Jon

Posted on Mar 13, 2009

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2000 yamaha yz426 wont start and gas is leaking out


Hi, Anonymous and the usual suspects are:
1. Enrichner system plugged, not properly functioning or improperly operated.
2. Fuel overflow.
3. Restricted fuel supply.
4. Gas cap and or fuel tank not venting properly.
5. Plugged slow jet or passages.
6. Inlet system air leak.
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.
99 YZ400F Leaking Carb Hard to start YZ 400 426 450
2001 yz426 carb problem need help
Yamaha YZ426F Owner Service Manual
OEM parts for Yamaha
Yamaha YZ450F Owner Manual Page 3

Sep 13, 2012 | 2001 Yamaha YZ 426 F

1 Answer

I have a yamaha 2002 426f that has not been used in 2 years. I drained the oil, When I replaced the oil I could not get any oil to regester I continued to add up to 3 quarts and still could not get any...


The 426 has a dry sump and an oil tank in the frame. You must check the oil level after running the bike, which will scavenge all the oil from the bottom of the engine and fill up the oil tank. Get it warm first and ride it for about 5-10 minutes. Then stop the bike and check the level. It's a pain, but that's the correct way to check the oil.

Feb 18, 2011 | 2002 Yamaha YZ 426 F

1 Answer

How much oil do i put in my 02 426


Hi, here you go:

Oil capacity is the same as the 250.
1.5 ltrs at oil & filter/s change.
700mls to 1ltr without filter change.
This bike has what is called a dry sump. You fill your oil at the filler point that is located in front of the fuel tank on the frame. It uses the front frame tube as a container for the oil & pumps it back & forth to the motor. This bike has two oil filters.A cartridge type one located behind the small round cover held in place with two bolts that is located on the clutch cover.The other filter is a screen attatched to the spiggot which the hose from the frame(front bottom) slides over. Remove the hose(frame front bottom), undo the spiggot that the hose was attatched to,and as you pull it down to remove it you will see the fine wire screen that is attatched to it.
When you remove the oil filler plug(in front of the fuel tank)you'll notice it has a dipstick on it. When you fill the tank the oil level will seem high. Run the bike first(to let the oil circulate) then check the level on the dipstick. It will now be much lower. adjust the level to the correct level & away you go!
I recomend changing the the cartridge oil filter & cleaning the screen every time you change the oil. Use a high quality oil like Motul & change the oil regularly.
Also keep your air filter clean & oiled properly.


Good luck!!
EJ Kudelka

Nov 16, 2010 | 2002 Yamaha YZ 426 F

1 Answer

What is the oil capacity for a 02 yamaha yz426?


Oil capacity is the same as the 250. 1.5 ltrs at oil & filter/s change. 700mls to 1ltr without filter change. This bike has what is called a dry sump. You fill your oil at the filler point that is located in front of the fuel tank on the frame. It uses the front frame tube as a container for the...yz-maniac

Oct 14, 2010 | 2002 Yamaha YZ 426 F

1 Answer

How do you change an fill the oil in this bike


my 450 holds about 1.2 qts or litres, the 426 will be similar, 1 litre without the filter change
but you when you drain it there is another drain on the frame down tube. and to test the level you need to start and idle the bike for a minute , for the oil to pump through and establish a level that you can read on the dip stick .

May 04, 2010 | 2002 Yamaha YZ 426 F

1 Answer

Where is the enginge serial number on yz250 1990-1995


SHOULD EITHER BE ON THE NECK OF THE FRAME WHERE THE HANDLE BARS ATTCH OR UNDER THE FRONT OF THE FRAME JUST BELOW THE PETROL TANK

Oct 07, 2009 | 2003 Yamaha YZ 250

2 Answers

2002 yz 426 clutch fluid


your motorcycle is wet type clutch so you don't have to worry and it is installed at the right side of the motorcycle the left side is the magneto with the coil.

Apr 16, 2009 | 2002 Yamaha YZ 426 F

1 Answer

Yz 426 wont idle, backfires and bogs out


Hello phwolfe,
Did not backfire but , boged out appling fuel. Found it was flooding because
the floats were over filling the chambers. Adjusted float settings (by eye )
problem solved !! Keeping the chambers 1/2 to 3/4 full worked for me.
My Bike is a 1983 Midnight Maxim 653cc. 4 Cylinder. Maybe yours is fuel injected ?

Best of luck !!

Ron



Mar 18, 2009 | 2002 Yamaha YZ 426 F

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