NX250 Thread -- official ADV owners manual

[fiep]

Originally Posted by fikse

Does anyone know the sizes for wheel ball bearings and sealings

Lenkkopflager V-05513 Steuerkopflager H 902 R	SSH 902 R
Radlager vorne links V-05493 Lager 6202 15-35-11 2ZR	6202
Radlager vorne rechts V-05493 Lager 6202 15-35-11 2ZR	6202
Radlager hinten links V-05887 Lager 6203 17-40-12 2RS	6203
Radlager hinten rechts V-05887 Lager 6203 17-40-12 2RS	6203
Radlager Antrieb V-06818 Lager 6204 20-47-14 2ZR

[fikse]

polarized and fiep :
Thanks alot for helping out here
Reason I ask is that I would prefer (bit I do not need to) to shop locally, with brands like SKF, Koyo... I can get bearings for reasonable prices. Maybe it's just me that is not familiar and not trusting brands like All-Balls?
My simple brain associate All-Balls with a men's only pub or something
Maybe I should give them a try. After all it's very cheap (more garage beers).

[fikse]

thirstybuck ;

On mine (using AFAM sprocket and original (31.000KMs) plate/bolts, the sideway play is considerable, but I belive it is not as much as yours (not big difference though). When I replaced the sprocket, I belive the old one was original, at least it the bike has been serviced by a Honda garage, there was some red silicone-liquid-gasket-like stuff in the gap, so free play was a bit less and "softer". I just removed this and replaced with new sprocket, and could not feel any siginificant difference. I'm not an mecanic (far from), but have replaced some sprockets trough the years, and cannot remember I have seen this much free play on any bike.

[scrambler66]

Originally Posted by thirstybuck

The countershaft is in good shape. I still think that that is a hell of a lot of lateral play, but I haven't had to deal with countershaft sprocket before. The back and forth play, chain directions, is much better than side to side. Tell me what you think.

Hmm, looks normal – but as I said, the wear of the countershaft is crucial. It’s kind of hard to tell with the bare eye; before I took the picture I thought there was no wear. Only after zooming the pic I saw that the shaft lost actually some material. Btw, it looks like you got an original sprocket, since that is the only one that got that rubber mounts.

Honda used that "flexible" mounting of the sprocket on all dirt bikes of that period (dunno about the CRF etc.) and a lot of drivers got puzzled by that. I was told that the side to side play is necessary to counteract torsions of the frame/swingarm for instance during hard landings.

I heard of some problems with that flexible mounting on the much stronger XRV650 Africa Twin. Many drivers had to buy new countershafts, some of them tried to glue (no kidding) the sprocket to the shaft, but I don’t know if that is advisable. And there had been many discussions among XRV drivers about the quality of aftermarket sprockets, apparently some are made of harder steel than the shaft (JT), or are not made with the necessary precision (sunstar).

I don’t know if that is the case with the NX250, but given the consequences, I would go with the OEM sprocket (plate and bolts are sold separately). And a bit of grease and chain lube from time to time shouldn’t hurt ;-).

[Jacl-Kampuchea]

I know this will sound WRONG to many, but it does work:

Remove or disconnect battery.

Remove sprocket.

Plug in electric arc welder

Do a very quick bead of weld on the countershaft.

Cool immediately with water to avoid melting the oil seal.

Repeat the above two steps until the worn bits are built up.

Use a dremel, small grinder or needle files to file new splines into the countershaft.

It's a most effective $2 repair.

[Jacl-Kampuchea]

I've done perhaps 35 thousand km's on my bike now.

No big mechanical issues - but it has had some issues with the valvetrain.

Basically the bike was in Cambodia for a long time before i got her and the valves in it are re-ground and sound clattery as hell lately.

I want to buy new valves, seats and seals in the interest of preventative maintenance.

I just know Honda parts. Are there any aftermarket valves out there?

[scrambler66]

Originally Posted by Jacl-Kampuchea

Basically the bike was in Cambodia for a long time before i got her and the valves in it are re-ground and sound clattery as hell lately.

You sure its not the cam chain tensioner http://www.advrider.com/forums/showp...postcount=4993 ?



I tried this fix since my engine was also making a lot of unpleasant noises - and it worked - at least for the last 3000kms ;-)

[IamsaparoS]

Hello everyone.
I live in Chiang Mai Thailand.
I was happy to be riding it.
And have good instructions from here.
and buy spare part from http://find.powersportsplus.com/?q=*...et:%22NX250%22
Thank you.
https://www.youtube.com/watch?v=UCsPYeniAO0
ฺBefore Rebuild
http://image.ohozaa.com/view2/wvPfW868VzRSI2Jl
After Rebuild
http://image.ohozaa.com/view2/wvPfZFSXLuM7zGz9
http://image.ohozaa.com/view2/wvPg3dFMBtQaL14V
http://image.ohozaa.com/view2/wvPg6LsBrc7vF7Wp
http://image.ohozaa.com/view2/wvPgajfqgQZMXesg


https://www.youtube.com/watch?v=UCsPYeniAO0

[IamsaparoS]

http://image.ohozaa.com/view2/wvPfW868VzRSI2Jl

[Jacl-Kampuchea]

Originally Posted by scrambler66

You sure its not the cam chain tensioner http://www.advrider.com/forums/showp...postcount=4993 ?



I tried this fix since my engine was also making a lot of unpleasant noises - and it worked - at least for the last 3000kms ;-)

I am going to replace the camchain and tensioner while I'm in there, as I last did so over 30'000km back - but the valvetrain has had dubious work done in the past and I want them returned to the best possible condition.

[fiep]

is it OK, to mention
I finally got my ... in motion and took pictures of what I have left of that poor NX I ripped to pieces when building Elsie

if not, mea culpa

http://www.advrider.com/forums/showt...6#post20227456

[PTC]

Originally Posted by thirstybuck

PTC
Thanks for the feedback. I'm going to order another sprocket. Do they come with the faceplate and bolts?

nope. just snug the bolts, dont crank em.

[HondaNx]

Can anyone tell me where i can Purchase a GearBox. The thing that spins at the wheel to show my mileage and speed.
Mine is broken and looking for one to replace it but cant find any online

[scrambler66]

Originally Posted by HondaNx

Can anyone tell me where i can Purchase a GearBox. The thing that spins at the wheel to show my mileage and speed.
Mine is broken and looking for one to replace it but cant find any online

http://www.powersportsplus.com/parts...EEL/parts.html

[wyowillys46]

Originally Posted by brokeagain

I don't know if this is against the rules, but there is a nice NX250 for sale in Western PA. I know the ad says barter, but when I spoke to him he said he'd sell it outright. Not in the cards for me, but maybe for you (yinz) guys.

http://pittsburgh.craigslist.org/spo/3378800606.html

Hnnng! The temptation to get a second NiXie is great.