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Old 08-02-2010, 12:29 PM   #1 (permalink)
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Default how much motor oil when refilling

hey i have a yfz40 i'm changing the oil in it. how much motor oil is needed when refilling? what weight oil is good to go with? also ive read some threads on oil and seen some using royal purple max cycle. whats a good oil to go with all the threads ive seen everyone gave different answers.
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Old 08-02-2010, 12:56 PM   #2 (permalink)
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first of all thats why your supposed to look at your owners manual tells u everything, 1.85 L with change of filter, 10W40 or 20W50 if its real warm where u are, i run only amsoil, whatever oil you get make sure its wet clutch compatible
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Old 08-02-2010, 01:03 PM   #3 (permalink)
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I run Amsoil also. With a filter change (which you should always replace) I have always dumped a total of 2 qts in without any problems.
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Old 08-02-2010, 01:12 PM   #4 (permalink)
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Main thing with oil is to change oil frequently. More often than the owner's manual says. 2 qts is ok with filter change. Be sure to put quarter of a quart in engine crank case, rest in oil reservoir. 10-40 good all round. 20-50 if you race. Wet clutch compatible.
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Old 08-02-2010, 02:39 PM   #5 (permalink)
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Originally Posted by iam_canadian22 View Post
first of all thats why your supposed to look at your owners manual tells u everything, 1.85 L with change of filter, 10W40 or 20W50 if its real warm where u are, i run only amsoil, whatever oil you get make sure its wet clutch compatible
because some people don't get a owners manual when buying a used quad. is there a oil pump in the motor that circulates the oil through the reservoir? or is it fed by the pressure from the hose on top of the res tank?
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Old 08-02-2010, 06:43 PM   #6 (permalink)
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There is an oil pump.
And if you bought a quad that is under 2006, you might want to look in to doing an oil mod. Or checking out the J&T racing, sponsor section on this web-site, they bore your case cover put in a squirter and a high velocity pump, that comes standart after 06. Prevents your bike from blowing up in... j/k.
Acording to the manual you put 0.33 in the crank case. And 1.55 in the oil reservoir. It's ok if you do a little more.
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Old 08-02-2010, 07:12 PM   #7 (permalink)
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how bad is the oiling system in the 04-05 450's? is it really that bad that you should do this oil modification? or is it just something that you should do if the motors already torn down?
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Old 08-02-2010, 07:38 PM   #8 (permalink)
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how bad is the oiling system in the 04-05 450's? is it really that bad that you should do this oil modification? or is it just something that you should do if the motors already torn down?
you dont have to tear the motor down, just pull the right side case cover off, and the older engines arent THAT bad, there are thousands that live a long healthy life and never have an issue, but the cost of upgrading the oil system is very cheap compared to the cost of a rebuild because the wrist pin seizes, its simple, and easy insurance.
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Old 08-02-2010, 07:43 PM   #9 (permalink)
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ive done some checking up on the j&t oil upgrade looks like you could just buy the 07 on up side case right then you don't have to do any milling or drilling to anything just have to replace the oil pump right? what about aftermarket side cases ive been looking into getting an aftermarket anodized clutch case or polished case does any of them have this upgrade done to them or would you need to do the mod on these cases also?
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Old 08-02-2010, 08:20 PM   #10 (permalink)
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the after market anodized covers are just the clutch cover, not the whole side case cover, you can buy an 07 + cover, but i think its much more money then just doing the upgrade from J&T.
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Old 08-02-2010, 09:31 PM   #11 (permalink)
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does anyone make the whole cover aftermarket? or are theey all just the clutch cover only? also does anyone know off hand who makes a anodized purple clutch cover i see ones in red blue black but no purple ones
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Old 08-03-2010, 07:45 AM   #12 (permalink)
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Originally Posted by ladygaggag View Post
because some people don't get a owners manual when buying a used quad. is there a oil pump in the motor that circulates the oil through the reservoir? or is it fed by the pressure from the hose on top of the res tank?
ya my bad thought of that after, as far as oil mod i have a couple buddies that havent done it on earlier years with alot of hard hours and no problems, and my 07 that comes with all the updated oil system had many rod bearing issues, just to show,but if it was me id still do the mod from jt, just more piece of mind
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Old 08-03-2010, 07:48 AM   #13 (permalink)
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no one makes an aftermarket case cover, just the clutch cover for "bling" effect,

as for purple... i havent seen one, but you can take any old billet cover and have it anodized yourself if you want it purple, save up all your parts and have them all done together the same color.
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Old 08-03-2010, 09:09 AM   #14 (permalink)
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Quote:
Originally Posted by ladygaggag View Post
how bad is the oiling system in the 04-05 450's? is it really that bad that you should do this oil modification? or is it just something that you should do if the motors already torn down?
Just to clarify, the 04-06 have the same oil system, the upgrade with higher volume oil pump and piston squirter was 07 and up. I built my motor last winter and had J&T do the oil mod, they done excellent work. The cost of a new 07 side case is around $390 plus the new oil pump, if I remember right J&T is about 1/2 that.
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Old 08-03-2010, 09:36 PM   #15 (permalink)
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no one makes an aftermarket case cover, just the clutch cover for "bling" effect,

as for purple... i havent seen one, but you can take any old billet cover and have it anodized yourself if you want it purple, save up all your parts and have them all done together the same color.

how easy is this to do and what all is involved? ive seen the kits before but didnt give it much thought into doing it myself. i figured i'd get alot better results sending the parts away to get anodized or buying ones already done.
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Old 08-03-2010, 09:40 PM   #16 (permalink)
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Just to clarify, the 04-06 have the same oil system, the upgrade with higher volume oil pump and piston squirter was 07 and up. I built my motor last winter and had J&T do the oil mod, they done excellent work. The cost of a new 07 side case is around $390 plus the new oil pump, if I remember right J&T is about 1/2 that.
thanks for clearing that up for me i may eventually needed to know that incase i bought a later style case. only if its for a good deal though i may try to do this myself since i still have to take out the clutch and all to replace the oil pump. all that is needed to do this mod is a oil slinger o ring and the high volume oil pump right? also a new cover gasket when putting back together.
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Old 08-03-2010, 10:20 PM   #17 (permalink)
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how easy is this to do and what all is involved? ive seen the kits before but didnt give it much thought into doing it myself. i figured i'd get alot better results sending the parts away to get anodized or buying ones already done.
i meant send them out, you can powder coat yourself with a kit and an oven, but anodizing requires a few chemicals, some electricity, and dye, etc. i wouldnt try it...
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Old 01-31-2011, 03:27 PM   #18 (permalink)
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Oil change simplified: (I use Klotz Mx4 10w40)

Amount is 54oz total = 44oz in the oil tank and 10oz in crankcase.
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Old 02-01-2011, 10:28 PM   #19 (permalink)
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goto maxmekker dot com to get a digital copy of the service manual.
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Old 02-04-2011, 03:31 PM   #20 (permalink)
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Originally Posted by leveldrummer View Post
you dont have to tear the motor down, just pull the right side case cover off, and the older engines arent THAT bad, there are thousands that live a long healthy life and never have an issue, but the cost of upgrading the oil system is very cheap compared to the cost of a rebuild because the wrist pin seizes, its simple, and easy insurance.
Ditto, prob would of never done it but I found out about the mod after it was to late. I did many upgrade mods during my build but still spent $1700. It is well worth the $200.
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