1973 Yamaha RD 350 2 stroke driveshaft oil seals need replacement.?

But the stator needs to come off to get to them. And once I remove the stator and replace the seals, how can I press the stator back onto the shaft?1973 Yamaha RD 350 2 stroke driveshaft oil seals need replacement.?
The tool threads into the ROTOR.


It bottoms out on the end of the Crank.





Get the Tool Tight into the rotor,,


then whack the end of the tool sharply as if to drive it further into the crank.


Rotor will just pop off the crank's taper.





To Reinstall:


The rotor will align itself on the crank's taper,,,oriented by the key/keyway in correct position.


Simply Tightening the center Bolt is all that's needed to seat it.


(15~17ft/lbs torque on the center bolt)





*Note,,No need to apply anything to glue the bearings in place.


The factory locating pins work better than anything that oozes out of a tube


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Edit:


Yep,,sounds like you have the more common 27mm L/H threaded puller.








The one you Need is 20mm x 1.5 thread R/H thread.





It's Usually one of the cheaper Pullers to buy,,


$10~12-ish





Yamaha Shop will have them in stock.


Honda Shop Should,same Size tool was used on


old CB750's,,Elsinores and MT250 Enduros,,


XL250's.





If you can happen to find locally just a plain bolt that size ,,it'll work.


Odd size bolt,,,dont hold your breath looking for one around town.





Hondas used just a ';solid bolt'; style puller





Yamaha style is HOLLOW-center,,for use on early YZ's which have a thread protruding from crank,,thru the rotor.


So the puller must fit Over all that.


Your RD has a flat ended crank with internal threads---no protruding stud.





Which is same as Honda Used,,,and why ya can use the 20mm x 1.5 ';Honda'; type plain,solid bolt Puller.





A Few common Kawasakis %26amp; Suzukis also use the same puller.





I know probably EVERY trick in the book to get the Rotor Off without a Proper Tool.


But I have Never Mastered being able to Absolutely Gaurantee 100% Reliable Damage Free Removal.





The Rotors are obsolete parts now,,,though ya can buy them Used on Ebay for Cheap.


But still not as cheap as the correct puller.





In Simple terms,,Get the right puller.


It makes life much simpler.


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Here's some on Ebay which list the applications they fit.


You can use that info to shop around locally








Ebay Item number: 110394974857


http://www.siriusconinc.com/ebayimages/3鈥?/a>





Item number: 310145446598


http://cgi.ebay.com/ebaymotors/ws/eBayIS鈥?/a>








It's a common puller,,,what's unique is that for RD350's,,Either style works fine.


Solid or Hollow





Hope that helps1973 Yamaha RD 350 2 stroke driveshaft oil seals need replacement.?
You must remove the Point Cam which sticks out of the Rotor,it Seems built in/1piece-- but its separate.


Item #26


http://www.bikebandit.com/assets/schematics/Yamaha/YA4271_14.gif





Remove Bolt#27 leave it In Place but withdrawn Half its length,tap Bolt left%26amp;right.


PointsCam will then come off Report Abuse

that bike is chain drive, doesn't have a drive shaft


are you talking about the front crankshaft seals?


you have to split the case to replace the seals, they only come out from the inside.


if those seals are leaking then you have worn mains, bearings





that's no job for a novice, when you spit the case the transmission gears come out too





edit; the threaded tool removes the flywheel that covers the stator


replace the bearings anyhow, all that trouble of taking it apart, you don't want to take it apart again to replace them, and the bearings are cheap anyhow, and apply a small amount of bearing mount, its like Locktite that holds the outside of the bearing to the case, (you don't want the bearings spinning inside the case) HD has that problem when people use synthetic oil





there's a special threaded tool to remove the stator, its cheap, I suggest buy one, or you can do it the hillbilly way with a gear puller and a big hammer, but you may damage it





edit #2 the threated tool has outside threads that screw into the flywheel as it screws in at the same time the center pushes on the crankshaft and forces the flywheel off
The stator is the STATIONARY part that is usually found attached to the outter engine case. I think you mean the ROTOR (the rotating part attached to the end of the crank). It is simple to remove with the the right type of tool-either buy the Yamaha rotor puller, or make one yourself with an old slide hammer and an appropriately threaded bolt-witht he head shaved down to fit into the end of the slide hammer.
are there holes on the stater to attach a gear puller or you can hook the edge on 3 spots make sure to remove nut or bolt in center not sure of set up but on older stuff with contacts on the inside of the flywheel you use a gear puller thn use nut to tighten it back up when done hope it helps let me know
Your gonna need to join the RD 350 forum for that answer. To rare of a bike for anyone here to know.


But we'll see.