RogerD

Thanks for the help! The seal popped right out with the screw just into the metal face of the old seal. Now I'll do the Magneto side and see if it runs a little smoother.. Roger

Got it!!! I was fooled because the old seal looks different than the new one. The metal was part of the seal. Do I need to put some sealer around the outside lip of the new seal before pressing it in?

Sorry for the delay - I've been trying to put a photo in here for half an hour...... What I'm talking about is not the seal itself, but a big copper-colored washer keeping the seal in place right? I have a new seal, but not a spare washer..... Still trying to post a phto from photobucket - drives me nuts!!!!

Finally felt good enough to work on the bike. I am trying to replace the clutch-side oil seal on the crankshaft. I have the clutch removed. I have the nut and gear removed from crankshaft. I removed the large c-ring, and It looks like there is a large washer behind it holding the oil seal in place. I,m afraid to just start prying on it. It looks like there is a sealant of some kind around the outer edge of this washer. Advice??? Thanks, Roger

Had another case of Congestive Heart Failure last Thursday.... Got out of the hospital last night. I'd still be there if they decided to do the bypass surgery.... Felling better, may even do the oil seals this weekend!!!! Rog

I think you'll need most of the harness if you want to use a key. At least the wiring to and from the rotor, the cdi, rectifier, coil and main switch - or a kill switch if you want to set it up that way Roger here's a basic wiring component photo.... http://www.cmsnl.com/yamaha-dt250b-19751976_model8548/partslist/F-05.html#results

Thanks for your help! I've never changed them this way before. The bike runs, but kinda rough and I always like to get them running well before starting restoration work. Hopefully the seals will do it. I didn't do a leak test, but suspect that's the case... Roger in Florida

Haven't been here in awhile...had another bout with congestive heart failure that kept me down for a bit. Ready to start on my restoration - 1970 DT1. I know we've been over this all before, but i need to replace the oil seals. Can I just pull them off the ends of the crankshaft without splitting the cases, and just press the new ones in? Any tricks or advice? A good source for the seals other than ebay? Roger

Thanks - Ireally learned some things on this one. I was wondering why my pictures were not larger though. It would make it much easier to see details. Rog

If anyone else has this problem, look at the thread in the workshop section. It might help someone. - Roger

Thanks for the input everyone. As you can see, when I took off the clutch basket, the two change levers ( #'s 2 & 3)were out of sync - or "untimed" . When replacing the shaft seal on the lever end of the change shaft( # 1), when the "e" clip is removed, it's easy to push the shaft towards the clutch side. When this happens, the change lever (# 3) on the end of the fork shift guide bar (# 4), which is spring loaded, snaps down out of position. I think I have them in phase now - there only seems to be an alignment mark on lever # 3 - the dot right in the center, just to the left of the yellow 3. It seems to shift up and down fine now, so unless anyone has an objection, I am going out to the shop to reassemble the clutch and cover. Thanks to everyone who had input here- and HAPPY NEW YEAR! I learned something today, so I count it as a good day - Roger

Never worked on a TRX always thought they were cool, but almost never see them in the states...Always had a thing for big twins having owned a BSA Spitfire for my first bike! Rog

Here's what it looks like. The torsion spring looks to be in the correct place - yes?I did take the cam stop screw out of the bottom of the trans case to help drain the oil. Now I can't get it OUT of gear? Do I need to take the clutch basket off? Roger

Just got back - looked at some schematics, going out to the shop now. Thanks for the help! Roger

May have outsmarted myself here. Just finished a resto on another 74 DT360A. Sold it on ebay last week ($3200) Had it running like new but noticed a slight leak around the shift shaft and decided to replace the seal. After replacing the seal, I had trouble getting the circlip in the slot - no clearance - had to pull on the shaft to expose the slot? When re-installing the shift lever, I had to tap on it to get it on the shaft. When i started it for a test ride, the shifter would not engage. I pulled the shaft out about 1/2" and was able to shift into first, but it won't upshift into any other gear. It was getting dark, so I rolled it in for the night. Any thoughts? Did I do something tapping on the shifter shaft?

May have outsmarted myself here. Just finished a resto on another 74 DT360A. Sold it on ebay last week ($3200) Had it running like new but noticed a slight leak around the shift shaft and decided to replace the seal. After replacing the seal, I had trouble getting the circlip in the slot - no clearance - had to pull on the shaft to expose the slot? When re-installing the shift lever, I had to tap on it to get it on the shaft. When i started it for a test ride, the shifter would not engage. I pulled the shaft out about 1/2" and was able to shift into first, but it won't upshift into any other gear. It was getting dark, so I rolled it in for the night. Any thoughts? Did I do something tapping on the shifter shaft?