Newbie Questions

[Jonesy21]

I've got a 03 400EX and it has been sitting for roughly 4-5 months now:( Sad I know but the military keeps me away from home often. I'm a noob to the quad scene but a very good mechanic(I work on airplanes and cars) Anywho I have some questions
1)What do i need to do as far as oil, spark plug,lubing once I get back?
2) My roomate has taken it out once or twice but says it's very hard to get started to the point of having to roll down a hill and pop the clutch to get it to turn over(bad I know) Any guesses as to what is wrong and what can i do to fix it?
3) What is the spark plug number or which one should I use?
I know this is alot of questions and I would just do a search to find out the general answers but I'm limited on computer usage here in Iraq so any help and replies are greatly appreciated.
Thanks
Brandon

[Fitzy]

if you do a seach on all those questions you have, you can find the answers quickly

[cals400ex]

i, along with many others, use mobil 1 15w-50 fully synthetic. there is no doubt that synthetic oil is better than dino. however, some people claim that you aren't suppose to use this synthetic oil with wet clutches. however, i have been using it for years without any problems along with several other members on the site. if you can pay the little extra for it, that is what i would use. you can lube the chain if you haven't done it for a while. i usually lube the chain after i ride a bit because it is hot then and the lube seems to move into the links of the chain better. 400ex's are just hard to start. you can try putting a 40 or 42 pilot jet in and see if that helps for starting. one thing i can say is don't keep hitting the throttle when trying to start the bike. just pump the gas 4 or 5 times and then hit the start button without giving it any more fuel. the stock plug is a ngk dpr8z. you may also want to drain the gas and put new fuel in. also, you should look at the air filter and make sure it is clean.

[Jonesy21]

Thanks for the help:D

[JOEX]

You might need a battery too. Put it on a charger first to see if it hold over time.

Joe

[quadrider400]

If you have a Whites Bros CDI (POS) replace it with stock, Big Gun or anything else and your starting problems should be gone.....