HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
MO_YZ450F

Oil Change Question 04 YZ450F

11 posts in this topic

Okay all, I've been riding bikes for many years and this new 04' bike has got me stumped. Here is the problem. When changing the oil (typical, no oil filter change), I take out the drain plug (bottom of engine), then side bolt (by gear shift lever ), then the manual says to also unscrew the bottom oil filter drain plug. Should I have to do that if I don't want to change the filter?

Part two: After all the oil has drained, I hold down the kill button and kick 5 times, clearing out all oil leftover that didn't drain. Then I put all the screws back in, and fill with 1000ML or 1 Qt. Manual says 1.07 for typical change, 1.17 w/ oil filter change, for a total of 1.27 qts. Anyway, once I fill the bike with 1000ML, I start for 3 minutes. Let cool for 5. Check the dipstick for oil level and as soon as I unscrew the dipstick from the frame, oil starts flowing out!! This makes me believe I have to much oil in the bike, but this can't be!

Please help! Also, I do check for oil pressure and that is fine. Thanks.

Share this post


Link to post
Share on other sites

yeah same thing happened to me ... but i came back from riding 150 miles or so and i checked my oil level and it flowed out of the dipstick hole .. i took some oil out i figured that it was too full ... i wouldnt worry about it

Share this post


Link to post
Share on other sites

if you get it running around normal temp and then try and change the oil it all squirts out form the pressure. Id say warm it up for just a minute the change the oil and see what happens.

Share this post


Link to post
Share on other sites
if you get it running around normal temp and then try and change the oil it all squirts out form the pressure. Id say warm it up for just a minute the change the oil and see what happens.

What pressure? :)

Share this post


Link to post
Share on other sites

I think you forgot to drain the oil from the frame. Unscrew the bolt at the bottem of the tank where the dipstick is... when you fire it up most of the oil is pumped up into the tank

Share this post


Link to post
Share on other sites

The engine was warm when I drained the oil, plus I kickstarted it with the kill switch on 5 times to get it all out. The only plugs (according to the manual) are on pg 3-15 of the manual. 1) oil tank plug (dipstick), 2) Oil filler cap, 3) Drain Bolt with gasket (main plug at bottom of engine), 4) Oil Filter drain bolt, and 5) Drain Bolt with Gasket (under shift lever ).

If all of those are drained, what am I doing wrong? It's been 2 hrs, went back and checked it dead cold, oil still flows out when I take the dipstick out.

Where is this "frame" bolt under the dipstick located? Do I need to remove a plate or anything?

Thanks fellas. :)

Share this post


Link to post
Share on other sites

If you follow the frame right below the head you will see one bolt all by itself. Empty the oil from there, as well as the case drain bolt, every time you change your oil. :)

Share this post


Link to post
Share on other sites

Yep, the last post is correct. You only need to start it for about a minute or less. It doesn't take long at all to pump the oil up to the neck. If you get it to hot you will have the problem of it coming out all over!!! :)

Share this post


Link to post
Share on other sites

Any need to drain the side bolt (under gear shift) and oil filter drain bolt then, if only doing an oil change without filter change? So just those two bolts, or all four? thanks. :)

Share this post


Link to post
Share on other sites

I never remove that one. You'll get a very small additional bit of oil from there, as you will the feed oil line. However, no matter what you do, about 100cc of oil is going to remain in the system anyway, so I don't worry about it as often as I change the oil.

What cracks me up are the guys that insist that the small auxiliary drain and the oil line are absolute necessities, but will skip changing or cleaning the oil filter every other oil change. :)

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0