Question about 2003 Yamaha YZ 250

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I need to add oil to my front forks on my 03 yz250 do i take the bleeder screw out to do this or do i have to disassemble the forks

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  • Yamaha Master
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You unscrew the large caps at the top

Posted on Apr 24, 2010

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How to fill forks 2001 yz250 yamaha


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1 Answer

2003 HD sportster - forks don't leak, bottoms out when front brakes applied


You may not have enough oil in the front forks or you may been a heavier viscosity of oil. I'm sorry but I don't have the oil capacity for your "Low Sportster". All I have is for "Hugger" models. They take 10.7oz. "wet" and 12.1 "dry". The difference between "wet" and "dry" is that if you simply drain and refill the front forks, it's call a "wet" oil change. If you disassemble and clean the forks of all oil inside, it's called a "dry" oil change. Contact the service department of your local shop and ask them how much oil goes in the front fork. To change the oil, there is usually a small screw in the trailing side of the lower fork slider down near the axle. Take these out and the oil will drain to a certain degree. Hold the brake while working the forks up and down with your weight to get all the oil that draining will get out of them. If you want all the oil out, you'll have to disassemble the fork tube. I would not do this if the seals are not leaking. Replace the screws in the sliders and then remove the top cap from one tube at the time and refill the tube with the specified amount of oil. Sometimes, the top caps can be difficult to get back in due to the pressure of the large spring in the front fork tubes. You may need a tool to compress the sping. I'm not sure on the "Low" model. I've always managed to the top caps back in without any special tool but I've never done a "Low" model bike. Harley uses what they call their "Type E" fork oil. I do not know what the viscosity of this oil is so I always use PJ-1 30 weight fork oil for most applications. Use only fork oil as any other oil may have a tendency to foam thereby negating any dampening action of the forks. If this doesn't solve your problem, you may want to check into changing the springs in the front forks. Progressive Suspension and others make kits for this.

Good Luck
Steve

Sep 13, 2011 | 2006 Harley Davidson XL 1200 L Sporster...

1 Answer

My 2002 fxd front forks are soft and come close to bottoming out. Does the fluid need to be changed? if so how and how much?


Yes your fluid may need to be changed if you want a more firm front end. I don't know what type of fluid you have in the forks now but what you need to do is to go with a thicker oil. In my '94 FXDWG, I went to PJ1 30 weight oil. Since I don't have a book on your late model bike, I can't tell you how much oil to put into each tube. There is a "wet" and a "dry" quantity to add when you've drained them. If you simply drain the oil and refill the fork tubes, use the "wet" quantity of oil. If you disassemble and clean the tubes out, use the "dry" quantity when you refill.

To drain the oil, look on the trailing side of the fork sliders. You'll see a screw or a set screw in the slider. Take this plug out and some of the oil will simply flow out. To get all of it out, hold the front brake and push down on the handlebars. Now, oil will spray everywhere so don't do this job in your living room. Once you get the oil out of both tubes, reinstall the plugs and refill the tubes one at the time by removing the top cap out of the tube and pouring the prescribed amount of oil into each fork tube. Ride the bike and see if the front suspension is too soft, too firm, or just right. Remember, the heavier the viscosity of the oil, the more firm the front suspension is. If you can't get it right, you might want to consider changing the springs in the fork tubes.

Good Luck
Steve

May 04, 2011 | 2002 Harley Davidson FXD Dyna Super Glide

1 Answer

How do u fill the down tubes on a hoda shadow


First of all do not add oil to your front forks with out draining them first. If you over fill your forks with oil you will damage your forks. To change your oil in your forks, first center stand the bike and lift the front wheel by putting a jack under the motor. Remove the front wheel and axle and put a pie tin under the fork tube. Reach up into the bottom of the fork tube with a hex key and loosen the screw but do not remove. Now take the air pressure cross over tube off, this will allow you to unscrew the fork tops( On some bikes you may have to put a towel on the tank and unbolt the handle bars to get them out of the way.). Pull the screws out of the bottom of the forks and gently pull down the oil should come out now. If you need new fork seals take the lower tubes off and replace(You may need to take off the fender and hang the calipers with wires.). Turn the lowers over and dump out the oil and reinstall fork lowers. Snug up screws and sealing washers on the bottom of forks you can not tighten till you put on fork tops. Now pour in measured amount of oil, again do not over fill. Put on fork tops and air crossover tube. Now tighten screws on bottom of fork. Finish reassembling bike.

Jul 14, 2010 | 1989 Honda VT 1100 C Shadow

1 Answer

I need to know if i can add fork oil to my 03 yz250 without disassembling the forks


Yes. Unscrew the fork caps one at a time and push the front end down just enough to get a turkey baster or syringe to the inside. Unless you've lost alot of fluid, just add in 10cc increments. If you get too much in them, the forks will get really stiff.

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May 21, 2010 | 2003 Yamaha YZ 250

1 Answer

Does my 93 1100 shadow have oil air in forks and if oil how to add


First of all don't add oil, change it. to drain your oil you need to remove the air tube, remove the front wheel, loosen the allen screw on the bottom of the fork, unscrew the fork top, then remove the fork tube, and turn it over to drain(be careful internal parts of fork will come out)remove parts clean and inspect. Reassemble in reverse order,snug up the screw on bottom, fill top with correct oil qty,cap top, tighten bottom and finish reassembly.

Apr 21, 2010 | 1993 Honda VT 1100 C Shadow

1 Answer

My front forks are noisy do they need oil? how do I check? how do I add oil?


normally they do need oil to operate but how noisy it is depends now.All front fork system has a spring mechanism in it and they do make a bit of noise when working.I suggest you open the top of the fork and check inside carefully if there is any oil with a dipstick or a long piece of metal rod.Else you will need to disassemble the whole forks.Hope this helps and please leave a rating.Thank you.

Jun 28, 2009 | 2006 Honda VT 750 Shadow

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