My first post here, glad I found this place!
Heres the link to the sticky with the manual: https://www.raptorforum.com/index.php?topic=4.0
Also, to the guy who asked what hardware is needed - this is for my 2002 raptor which I think they are all the same:
You will need a 5mm allen wrench to take the skid plate bolts out.
You'll want a 3/8 inch drive ratchet with a 14 mm socket for the oil reservoir and a 17mm socket for the crankcase drain. Althought I found a 17mm open ended wrench was much easier for taking this drain plug out.
You might need an oil filter wrench to get the filter off if yours is really tight.
Your going to NEED a long skinny funnel to pour the oil into the reservior as its in a very invonvenient place. I would say the funnel should be at least 1 foot long, one of those funnels with a hose coming off the end would work perfect as you could feed the hose in there.
Oh and don't forget an oil pan =)
I also found that the reservior will OVERFLOW at exactly 2 quarts of oil if you do not start the engine after putting about a quart in.. you need to put about 1.25 quarts in and then replace the filler cap and let the engine run for 30 seconds or so to suck some of that oil up. I also found that if you do overflow the reservoir, and then try to start the engine without the filler cap on, it will shoot oil out like a geyser ... what I mess I made..
I also wanted to respond to the one persons comment about staying away from automotive oils - I just want to say this is pretty much an urban legend and there is no proof that automotive oils damage wet clutches due to "friction modifiers". This is widely debated over many forums but one thing you will never see is solid proof that running automotive oils will cause problems with wet clutches. This rumor is pretty common in the motorcycle world too but I have seen it to be false with my own vehicles, as have many others I've communicated with.
Just thought I'd throw that in there, if anyone was too scared by the hype to run regular (and much cheaper) oils - I choose not to pay $10 a quart for super duper ATV/motorcycle specific oils until I see some scientific proof about this rumor.