first 4 stroke!help please.

hi guys im new to tt and have just brought a 03 yz450f great bike im just going to service it before i ride it and i got the oil and filter from yamaha but have no idea witch bolts to undo to drain old oil out?and will i also need a torque wrentch to tighten up the bolts with?sorry if these questions sound simple but i just dont know.thanks in advance.

Start by downloading a manual here:

http://www.yamaha-motor-europe.com/community/service/manuals.jsp

You should also understand that the motorcycle has a dry sump oiling system, wherein the oil is stored in separate area, the frame in this case, and pumped to the lube points, then picked up and returned to the tank. Thus, the dip stick is located on the left side of the frame near the steering head. The engine must have been run within 10 minutes prior to checking the level, or the oil will have begun to drain back into the crankcases, and your reading will be inaccurate.

Read also:

http://www.thumpertalk.com/forum/showthread.php?p=5221903#post5221903

Simplified oil change procedure:

Do Not remove the oil line or frame screen. You may want to inspect it once, but it's mostly unnecessary.

  1. Start and run the engine for about one minute and shut down.
  2. Turn the front wheel to one side, and remove the drain bolt from the bottom of the square frame down tube. HOLD A PAN UP CLOSE to the drain port! Replace the bolt.
  3. Remove the oil filter cover and replace the filter (or clean it if using stainless mesh. do not reuse brass mesh filters) Replace the cover.
  4. Remove the drain bolt from the crankcase, located on the bottom of the transmission, angled toward the rear. Replace when it finishes draining.
  5. Refill the system at the fill port on the left crankcase cover. Refill with 1.1 liter if you changed the filter, or 1 liter if you didn't :bonk:
  6. Start the engine, run for one minute, shut down and check your oil level.

Torque wrenches should not be necessary if you have a reasonable level of skill and common sense.

You should also read:

http://www.thumpertalk.com/forum/showthread.php?t=575367

and:

http://www.thumpertalk.com/forum/showthread.php?t=634724

...and check out the Common Threads sticky in general.

Be very careful tightening the oil bolts...If they don't have them already I'd recommend using copper washers on them, hand tighten, then just a very small amount more with the wrench...The copper is really soft so if you over tighten a little it will "squish" a bit and feel real tight before you strip anything...

I believe per yamaha spec, you should run the engine for about 3 minutes, not 10 (when checking oil level).

I believe per yamaha spec, you should run the engine for about 3 minutes, not 10 (when checking oil level).
Who said 10?

Three minutes is better than one, but one is adequate for the purpose, and unless you can ride it, or at least blow air over the radiators, you'll overheat it running much longer than one.

thanks heaps to the guys above lots of help! i downloaded the manual and its gona help alot so thanks grayracer513!!!!

have a new oil filter and oil and rubber o rings for oil filter bolts and copper washer so will be in the shed tonight gettin it ready for riding in weekend!cant wait!

and thanks again!

I believe per yamaha spec, you should run the engine for about 3 minutes, not 10 (when checking oil level).

Nah, he was just saying you need to check it within ten minutes after turning it off...not run it for 10 minutes...

Grayracer...that may have been the best reply I've ever seen. Very cool of you...

Grayracer...that may have been the best reply I've ever seen. Very cool of you...

Seemed a bit long winded for a oil changing post.....:bonk::bonk:

Nah, he was just saying you need to check it within ten minutes after turning it off...not run it for 10 minutes...

I see :bonk:

can someone tell me where too put the oil in.... in the frame or in the case???? and also.. should i use gear oil in the case or will 10w30 be fine?

Maybe you could provide a little information about what year/model you have?

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