Question about 2004 Yamaha YZ 250

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What is the correct torque settings for a yz250 2004 model barrel

And the torque settings to bolt down the head thanks

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Hi, Lachlan_mill 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.
torque specs for YZ250 Yamaha 2 Stroke
YAMAHA YZ250 LC Owner Service Manual
OEM parts for Yamaha

Posted on Jul 26, 2016

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Posted on Jan 02, 2017

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SOURCE: Need torque wrench settings for cylinder head bolts

try here

hope this helps

Posted on Jan 04, 2009

  • 1512 Answers

SOURCE: head bolt torque

Hi bengriffith1
You can download a copy of the engine manual from here
It has all the info you need. Any problems with the download just let me know
regards robotek

Posted on Apr 02, 2009

  • 314 Answers

SOURCE: what are the torque wrench settings for a cylinder

Get in touch with your local yam dealer ,and speak to a mechanic ,they may be able to help ,or get hold of a workshop manual .

Posted on Mar 13, 2010

  • 9 Answers

SOURCE: torque specs.

Check manuals here:

Posted on Aug 02, 2010

  • 27 Answers

SOURCE: i have tw125 what are

I hope it helps

Posted on Apr 21, 2011

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The correct practice when doing head work is to remove any build up at that base of the holes and to run a thread tap down to ensure that the thread is clean all the way to the bottom. Blow out the holes with compressed air. In you case leave the head off and screw in each bolt all the way by hand and measure the distance between the head of the bolt and the block surface . IT should be much smaller than the width of the head by say 1/4". If it is then the bolts will allow enough compression of any sort of gasket used . A point of interest here is that this engine uses a torque setting until all the bolts are set and then the final torque is obtained by angular setting of the head of the stud/bolt. Use the correct tensioning sequence as this is vital to set the head properly..

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An easy way to guide yourself in the proper sequence is to make a cheat sheet of sorts. Take the headgasket and piece of cardboard about the same size. Using the headgasket as a template, mark each of the bolt holes on the cardboard with a sharpee marker, pencil or pen. Also outline the headgasket and mark the top of your drawing. Now starting from the center bolt as number 1, move either to the right or left, up or down to the next bolt hole and mark that as number 2. Now move to the bolt hole diagonally across from number 2, past Number 1 and mark it as number 3. Continue this sequence of moving diagonally back and forth across the headgasket outline until all of the bolt holes are marked with a number. What you are trying to do is start at the center of the head tightening it down in steps of about 15 foot pounds moving out from the center.

I have built a lot of these engines over the years and they are very forgiving of the head torquing sequence. As long as you start at the center and move out left and right, up and down alternating back and forth, you will have no problems. As a final check once you are done, check the torque on each head bolt to make sure you have not missed one. This does not have to be done in any sequence and you will then be sure that you have it completed properly. Good luck.

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1 Answer

What are the torque specifications for the heads on sporster

You didn't say what year model. Sometimes the heading at the top of these postings are not correct.

For an Evo Sportster, the head bolts must be torqued in a particular sequence. The head bolts are labeled #1, 2, 3, & 4 in the drawings, not literally. The front head bolts are numbered differently from the rear as well.

You torque the bolts in three steps. The first step, you torque the bolts to 7-9 foot pounds. Then you torque them to 12-14 foot pounds. And finally, you mark each bolt and pull it down an additional 1/4 turn. You must torque the bolts in the following sequence.

On the front head, the #1 bolt is the front bolt on the left side of the cylinder head, then the #2 bolt is the left rear bolt, #3 bolt is the right front, and #4 bolt is the right rear as viewed from the top of the head.

On the rear head, the #1 bolt is the bolt at the left rear, #2 bolt is the bolt at left front, #3 bolt is the bolt at right rear, and #4 bolt is the bolt at right front as viewed from the top.

Do not forget to put the O-rings on the dowels when you put the head gasket on and oil the threads of the studs. Make sure you put a new cylinder base gasket on the bottom of each cylinder as well. Once the torque has been taken off the cylinders, the base gaskets will leak unless they are replaced.

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