There are plenty of videos about this topic on TH-cam- yours is the best by a long shot even being 9 years old! This is the only one that explains how the weep hole works or why both seals go the way they do.
Thanks for the vid, I didn't remember what whay the waterpumpseal had to go. Now I know. I personally use a plastic hamer, or a hardwooden block with a steel hamer, working close to sensitive parts like a casecover, bearings, hubs, ... If you miss one hit, it can be an expensive one. It also helps to tab bearings perpendicular into there plase, rather than slantwise. Thanks for sharing!
Always a good idea to coat your seals with a tiny bit of grease,assembly lube or oil to avoid premature failure next time , keeps you from ripping the inner lip of the seal re-installing the impeller shaft also.
Tikkikoira can i reuse the seals if they are a week old? my bike was in a workshop to fix the water leaking. and now it is leaking again becouse they dont changed the shaft becouse the tought it was ok for some time.
Hey, I have a 2011 yz450. I knew better but I made the mistake of switching to fully synthetic oil, now it's slowly leaking oil out of the weep hole (5 engine hours later). Apparently that's were coolant was released also but it was never enough to be concerned. I'm hoping i can switch back to traditional oil which I imagine is thicker. I don't think the seal is bad since it wasn't an issue before. I could, but really don't want to take on this project so let's just say I never change the seals, how long before bigger issues occur? Bc I still need a chance to run traditional oil & see if leak goes away. I'm not due for an oil change until 5-10more hours. 1. Fix immediately? 2. Fix 5hrs later @ next oil change? 3. Fix once leak continues w/ traditional oil?
BEWARE: Newer YZ's are different. The water impeller shaft is all one piece and does not come apart. I learned that the hard way by trying to twist it and I broke some fins off of it. I finally realized it is all one piece and there is a tiny circle clip that you need to pop off the stem and then you can take a few more small pieces off the stem and it will slide out the front.
when i pulled the cover off a copper washer fell down from inside of the cover. After searching the part diagram from yamaha f yfz 450 there is no such part. Obviously its not the empellar it something else . Any help would appreciated since i do not want to reinstall everything back together and not have this copper washer somewhere that is needed
I removed the case half to redo the water pump seal and I accidentally tore a rubber gasket where the oil goes in or out. The is a metal ball where this rubber seal is. Anybody know how to remove and replace that seal?
+Preston Lee Changed the seal last week finally. They have some springs in them and it had worn through and put massive grooves in the shaft, too big for emery cloth... 160 quid for new parts, the impeller was black and brown... time to sell it, can't be dealing with that sort of maintenance, it was fun while it lasted.
There are plenty of videos about this topic on TH-cam- yours is the best by a long shot even being 9 years old!
This is the only one that explains how the weep hole works or why both seals go the way they do.
I've watched a couple videos on changing the water pump seals. This is by far the best. Thanks for taking the time to help those of us less educated!!
Thanks for the vid, I didn't remember what whay the waterpumpseal had to go. Now I know. I personally use a plastic hamer, or a hardwooden block with a steel hamer, working close to sensitive parts like a casecover, bearings, hubs, ...
If you miss one hit, it can be an expensive one. It also helps to tab bearings perpendicular into there plase, rather than slantwise. Thanks for sharing!
Always a good idea to coat your seals with a tiny bit of grease,assembly lube or oil to avoid premature failure next time , keeps you from ripping the inner lip of the seal re-installing the impeller shaft also.
I was wondering about that. thanks
Thanks for the detailed info. A little bit different for the 2016 YZ450FX. Circlip instead of a nut on the impeller shaft.
Great video. Alot of people put those two seals backwards=trouble.
Tikkikoira can i reuse the seals if they are a week old?
my bike was in a workshop to fix the water leaking. and now it is leaking again becouse they dont changed the shaft becouse the tought it was ok for some time.
absolutely one of the best tutorials i have ever seen
Very helpful thanks a million! I would not hammer a bearing like that though. I would use a socket and a rubber mallet.
Exactly what I was gonna say.
Awesome your from Monson , Im from Wales.. great video
Hey, I have a 2011 yz450. I knew better but I made the mistake of switching to fully synthetic oil, now it's slowly leaking oil out of the weep hole (5 engine hours later). Apparently that's were coolant was released also but it was never enough to be concerned. I'm hoping i can switch back to traditional oil which I imagine is thicker. I don't think the seal is bad since it wasn't an issue before. I could, but really don't want to take on this project so let's just say I never change the seals, how long before bigger issues occur? Bc I still need a chance to run traditional oil & see if leak goes away. I'm not due for an oil change until 5-10more hours.
1. Fix immediately?
2. Fix 5hrs later @ next oil change?
3. Fix once leak continues w/ traditional oil?
Great video and thanks for sharing it!
Easy to follow video thank you
I'm looking at this job now for my WR250R. I wonder how similar the job on that is?
BEWARE: Newer YZ's are different. The water impeller shaft is all one piece and does not come apart. I learned that the hard way by trying to twist it and I broke some fins off of it. I finally realized it is all one piece and there is a tiny circle clip that you need to pop off the stem and then you can take a few more small pieces off the stem and it will slide out the front.
So i dont need to take the crankcase cover off
@@clase230 I can't remember.
Thank you so much, my dumb ass tried to pick the seals out with pliers...
Great video, thanks alot!
I appreciate this so much
Thanks bro gonna be replacing mine soon
when i pulled the cover off a copper washer fell down from inside of the cover. After searching the part diagram from yamaha f
yfz 450 there is no such part. Obviously its not the empellar it something else . Any help would appreciated since i do not want to reinstall everything back together and not have this copper washer somewhere that is needed
Good video. Very informative. Thanks!
Thank you for the help. Same set up on a 2014 CRF 250r
Hey I did my water pump seals on my 03 and my clutch is not disengaging now
so u don't need no grease to put everything back😑😮😮
Thank you for the video bro, very good👍
Very helpful. Thank you Sir
The bottom oil line is where mine is leaking no sure what the problem could be
Thanks!
Same thing for my yz125? I tried watching other tutorials but people are really bad at showing how to do It
+oBlair65o yeah it's the same
This causes water and oil mix???
Thank you
Name of the exact seal for this bike? I have the same problem on the same year bike
great video, tanks
thanks for helpful video!!!
I removed the case half to redo the water pump seal and I accidentally tore a rubber gasket where the oil goes in or out. The is a metal ball where this rubber seal is. Anybody know how to remove and replace that seal?
Very helpful thanks!!
i have coolant leaking from my weep hole... will this fix it ?
it should
Thanks for the Vid!!!!
valeu ae brou! !!
Thank You!!!
I have coolant leaking into my crank case on a 2010 KX450f and I don't know whether it is the pump seal or the head gasket, is there a way to tell?
+Preston Lee Changed the seal last week finally. They have some springs in them and it had worn through and put massive grooves in the shaft, too big for emery cloth... 160 quid for new parts, the impeller was black and brown... time to sell it, can't be dealing with that sort of maintenance, it was fun while it lasted.
I'm not sure why you'd pull the case cover off and not just rebuild your entire water pump...cheap insurance
Use wood so you do not damage metallic parts!
good but needs cbr 250R
can you help me to find Inner clutch cover with water pump/ 2003 Yamaha yz450f and send to me,. I'm from Denmark. I can not find one in Denmark :(.
I want to know how to assemble the water pump kit in a klf Kawasaki four wheeler 94