Various Maintenance questions

[kevlarorc]

Hey guys,
I never took my bike in to do the 3000 mile maintenance. It's at 4000 miles now. I'd like to do some of the work myself so I can learn more about the bike and save some money.

I was looking at this for the spark plug maintenance: http://faq.ninja250.org/wiki/Changin...rands_to_avoid

1. Do I need to first remove the existing spark plugs to determine if they actually need to be replaced or should I replace them regardless? I don't really know what I should be looking for in bad spark plug so I was figuring on just replacing them.

2. Do the listed model #s for those plugs apply to new-gens as well?

3. I think my handlebars may be misaligned slightly and I'm not sure if it's just me. Is there a way to check for sure if the handlebars are misaligned?

4. Does anyone happen to know the threading/length for the screws that hold that cone shaped muffler shield thing on? I lost my top one and I'd rather not take apart my bike in the home depot parking lot so I can bring the remaining screw in.

I think that's all I got for now. Thanks, ninjetters!

[kkim]

there is no 3000 mile service for the newgens.

http://www.ninjette.org/forums/showthread.php?t=10577

[kevlarorc]

Oh lawdy...
edit: neeeeevermind I think I just found my own answer.

[austexjg]

And the answer is....

[kevlarorc]

Originally Posted by austexjg

And the answer is....

well i had asked about checking brake pads then went out and looked at the bike itself and I think i see what i need anyway. kkim also just really helped me out
specifically i thought perhaps if the pads were visible there would be a maximum wear notch and there was.

[UltrA_09]

Originally Posted by kevlarorc

Hey guys,
I was looking at this for the spark plug maintenance: http://faq.ninja250.org/wiki/Changin...rands_to_avoid

1. Do I need to first remove the existing spark plugs to determine if they actually need to be replaced or should I replace them regardless? I don't really know what I should be looking for in bad spark plug so I was figuring on just replacing them.

2. Do the listed model #s for those plugs apply to new-gens as well?

I'm actually curious as to what others have to say about this.
Would all the information on the wiki page apply to the 4th generation 250 (08-11)?

[Momaru]

Originally Posted by UltrA_09

I'm actually curious as to what others have to say about this.
Would all the information on the wiki page apply to the 4th generation 250 (08-11)?

The info from the section you linked wouldn't necessarily apply. Sections would likely be similar, but I wouldn't use their numbers without cross-checking your service manual. However the subject matter under this link should apply.

For reference, we 'new-gen' riders use NGK model CR8E or ND/Denso model U24ESR-N plugs. Taken direct from the FSM. They're pretty cheap as parts go and for as important as they are to the engine, I replace them if there's any question.