New used bike, what to replace?

[PRYDEE]

You know what the only bastard thing is about these bikes aye?
THEY HAVE STOPPED MAKING THEM

[Rupe]

The exhaust o-ring is the same as the ones used on a late cr250r, anyone know the size???

the o ring used on the 04 CR250 is different to the one used on the 06 CR250, the 04 the pipe fits externally over the flange, whilst on the 06 the pipe fits internally.

if yours is an internal, please let me know, as one of 2 on mine are broken![/QUOTE]

Mine fits externally over?

Wheres the best place on the shore to get one do you think?

[cheese]

If you want you can come over as see if it fits my factory pipe of my 04, sam had a factory pipe off an 06 too I think.

[Rupe]

just took the exhuast off to look at the piston. I'll prob replace it soon, just wondered what people thought the condition was like. Does it look like it needs changing, I don't know just from looking but prob will anyway.

Thanks

[ShiFty268]

You can do no maintenance and just replace things when they brake but........
I would give the bike a complete service if you want to keep it in good shape. Do this every 6 months or so to keep bike well maintained

6 monthly maintenance:
-Check all the bearings, steering head, linkage, top suspension, swing arm, front and back wheel. Grease them all or replace if needed.
-Clean the carb, pull it out take the float and that off then spray crab cleaner all through it then use compressed air gun to blow all the crap out.
-Check sprockets and chain replace if needed.
-Check brake pads and tires, replace if needed
-Basically give a good going over check everything.
- 90 hours on piston depends if raced or not, but might want to do a top end to ensure it's fresh. Clean power valve when doing this.


For regular maintenance:
- Change gearbox oil every 10 hours, probably don't have to do it that often if just trail riding but doesn't hurt.
- clean air filter as needed, when gets dirty, or after a days riding like a trail ride or something.
- Check chain and adjust.

After every ride:
-good overall wash with soapy water brushes and hose, make sure to give chain good clean. You can use water blaster to wash but the water gets past the seals and shortens the life of bearings and wrecks the seals. If you do use water blaster don't point directly into bearings.
-Can clean chain if you want with wire brush, but make sure you lube the chain no matter what.
-lube foot pegs, clutch lever and brake lever
-Quick overall check, tighten bolts 2strokes bolts loosen up alot
-Also you can give all metal parts a wipe or spray with CRC or WD40 something like that, spray silicon on the plastics and forks legs. When spraying on plastics give it a rub in with a rag.

Probably missed something.. have fun riding

[ShiFty268]

just took the exhuast off to look at the piston. I'll prob replace it soon, just wondered what people thought the condition was like. Does it look like it needs changing, I don't know just from looking but prob will anyway.

Thanks

Looks likes its been quite used but i wouldn't be able to tell how long thats got to go. Do a compression test and ask on here and/or at a shop if they think you should replace.

[cheese]

Its hard to tell looking like that. but it wouldn't hurt to put a new one in so you know that its new. WRT got a bike off a mate of a mate with a "new piston" and it broke!!

I'd keep riding it and just do it sometime soon.

Bikes looks tidy!!

[Rupe]

Just got a couple more questions.

Looked all over the shore for, 2x exhaust o-ring 48mm, and 2x exhaust springs 69mm (although prob a couple mm shorter would be fine). Had no luck so if anyone has any ideas where to try that would be great.

Also want to get a hotter plug, and the manual states a BR8EG as standard. Do I have to stick to a BR7EG, or can I use say a BPR6ES?

And lastly to do a compression test do I have to remove the fuel line?

Thanks again for the help so far.

[cheese]

Ok as far as I know an 8 is pretty hot anyway. I think I'd stick with the 8.

I got some springs from colemans suzuki. they had a large range. I have some left from teh RM I think that didnb't fit. I'll see how long they are.

[Rupe]

Ok as far as I know an 8 is pretty hot anyway. I think I'd stick with the 8.

I got some springs from colemans suzuki. they had a large range. I have some left from teh RM I think that didnb't fit. I'll see how long they are.

Thanks cheese. I'll stick with an 8 then.