Fork oil change, how much oil?



9 replies to this topic
  • finglan

Posted August 02, 2001 - 04:03 AM

#1

I am going to change my fork oil. How much oil do I need to buy? I weigh 250lbs. ( remember muscle weighs more than fat! ) and have stiffer springs in the forks but they are still soft when jumping. What weight oil should I use. The manual has a min. oil height, what is the max height I can go.

  • Scott_F

Posted August 02, 2001 - 05:22 AM

#2

The range is 80-150mm. Start around 100 and add as required. You could try a 7 or 10 weight cartridge oil.

  • finglan

Posted August 02, 2001 - 05:28 AM

#3

How much oil will I need to buy?

  • MOmilkman

Posted August 02, 2001 - 06:55 AM

#4

2 quarts should cover both legs easily.

------------------
Darin in Missouri - 1999 WR400F
Enduro Heaven - Ozark Mountain TrailRiders

  • MN_Kevin

Posted August 02, 2001 - 07:01 AM

#5

I BELIEVE 500cc's per leg put my 99 @ minimum level (whatever the capacity is of a RATIO RIGHT). I used PJ1 2.5 weight, and I need to raise my level (I weigh 170#).

According to MXA, 5 wt should be the minimum viscosity to ensure proper lubrication of the fork internals. Kayaba 01 IS 5 wt.

------------------
'99 WZ/YR (you choose!) with ALL YZ mods, de-octopused, DSP Doug Henry airbox w/ velocity stack, FMF PowerBomb header, Stroker SX-1 silencer, SS front brake line, OEM YZ tank, IMS YZ seat.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • finglan

Posted August 03, 2001 - 03:54 AM

#6

I changed the oil last night. I followed the directions to the letter. It took less than 1qt. for both forks w/a height of 90mm. Does that sound right. Seems like it should have held more than that.

  • MN_Kevin

Posted August 03, 2001 - 06:07 AM

#7

Finglan,
Priming the cartridge with oil is critical for attaining the proper oil height. I tore my forks apart and thoroughly cleaned them prior to adding oil. If you did not fully dissasemble your forks, then yes, you may bo OK on oil level...

  • finglan

Posted August 03, 2001 - 08:21 AM

#8

No I didn't disassemble them but I did pump the tubes to get as much of the old oil out as possible. I filled the tubes, pulled the dampener rod up and down a dozen times, and extended the outer tube all the way up and put it back down. I then pumped the outer tube about 7" several times to get the air out. I pushed the the dampener rod all the way down and then set my oil level at 90mm w/my turkey baster.

  • Russ_P

Posted August 03, 2001 - 02:29 PM

#9

Hey Finglan,
That muscle you speak of that weighs so much? Would that be the hangous overthebeltous? Sorry man I just couldn't resist. :D You just opened yourself up for that one! I hope you forget this shot by the time we get together again, (that may be a while now)! Serously if it wasn't for the big guy I would still be stuck in a rock field somewhere in the Aleghenny National Forest. Thanks for bailing me out of that one. :)
Russ

------------------
'00 WR 400
Western Fab Insert, YZ timed, airbox lid removed, YZ throttle stop, Michelin S12's, UFO YZ plastic,Mobile 1.

  • finglan

Posted August 06, 2001 - 05:43 AM

#10

Russ,

You forget I have the added weight of a full head of hair! Give me a buzz if you want to ride in Swain. They have been going down about every Sunday now to get ready for the Sept. 9th race. It is a 5 mile loop much tighter than Allegheny, hence slower. Lots of smaller rocks but less roots. Good place to get used to the rocks. I finally put new meat on the rims.




 
x

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.