250-500cc Splitting the Case of a 2010 wr300

Copper washer for a drain bolt ?

Get yourself a blind hole bearing puller for those bearings. Trust me it will come in very handy and you won't be sorry you have this for a later project.

I just bought a nice set myself like the picture below from Amazon and it was only about $45.00.

Already used it to extract a few bearings on my spare original BMW G450X engine while freshening it up. The TC 449 engine that's in the frame now is coming out and it will get the same treatment.

• 
  

  9pc Blind Hole Internal Pilot Bearing Gear Puller Slide Hammer External Removal Repair Kit
  by SUNROAD
  $43.59 $ 43 59
  FREE Shipping on eligible orders
  Product Features
  Package Includes: 1 x Set of Blind Hole Bearing Puller Kit; 1 x User's Manual

No its really small fell out engine when i was fliping it over so not sure where it would go. was kind of thinking it goes behind that black washer type of thing in the manual it doesn't even show the black one..

ya i got one that has the set on the left but not on the right thanks!

All new bearings in the engine getting ready for assembly
Used the oven to heat the case and “sweat” the bearings in I had in the freezer

put the seals in
(feel like putting them before the bearings would've been better as if you don't seat the seals properly its hard to get them out )
the left crank case seal didn't seat properly at first and took a little force to pull it back out(didn't use the sealpuller as that can easily ripit) but i still might've damaged the spring so I'm probably going to order new one

used three bond liquid gasket around the seals before install
used sockets the size of the seals and a rubber mallet to seat them

Installed the transmission they spin freely
used lm48 installation paste on where metal too metal connected again.

can anyone confirm that this top fork is proper?
the other two forks notches are directly seated to the back of the ridge
my disassembly picture looks like the drum is in the correct position
but don't know if the top fork is suppose to seat to the back of ridge like the other two
I played around with it and theres really no other way it would go back on just trying to double check thanks!

so finally after so many months of waiting everything is finally falling into place time to close up the case

used the heat method to put the crank in
heat the case too 200degrees for about 10 mins and have the crank in the freezer at why'll the case is heating up.

everything looks properly seated and ready for the other side to be pressed on



using the tusk crank installer keeps lope siding onto right side i put a heavy duty clap on the other side no matte what been doing i feel restriction on the front sprocket bearing although its as seated as it the tranny side/ the bearing side gets. scared to keep cranking on it as it lopesides


( looking at the picture just now and the website https://www.motosport.com/dirtbike/oem-parts/husqvarna/2010/wr-300/transmission?fam=Other) is number 24 and 25 looks like it belongs on the out side did not notice (i took it apart and left it like how it came out changed that o ring)

will be trying right now and report later


having problems wth my snowbike also feel free if your part of ktmtalk http://ktmtalk.com/showthread.php?541107-2001-ktm-525-exc-timbersled-starting-problems too look over and respond to my thread thanks!

yes it took some heavy duty vise clamp but it came off i should have no problem closing the case now! can hopefully kick her over tonight! will update with videos and more pics

Not sure if I'm seeing things but looking at your post 21 , it looks like a different bearing . Did the sleeve from the old bearing stay on the output shaft ?

Hope this post doesn't break any rules.. If anyone is looking (please let your friends know - thank you).. I have a almost complete Husqvarna WR250 engine for sale (sorry I do not know what might be missing).. Bottom end was recently rebuilt by Rob Lang Off-Road with new bearings (see invoice).. Transmission is the 5 speed wide ratio (WR250 came with 5 speed close ratio).. Please see the "Classified Section" for more information (Awaiting moderation).. Thanks and cheers..