MY experience with my new to me wr400
Posted May 05, 2008 - 07:17 AM
Man did I ever have difficulties. Warmed the bike up, dead start off the line ten minutes later. Couldnt get it to fire, took fifteen minutes finally got a bump start from offiicials. Only to have it happen when I stalled it 15 minutes later.
Think I have it down now that I started it 40 or so times yesterday. Aside from getting stronger legs... I need too..Open the hot start valve, kick through once, then find high center and go through steps.
I am now in the 400 club just wat to be able to start it easily cause I found I went alot slower for fear of it dying and having to start it, which in turn caused me to stall it more.
Posted May 05, 2008 - 07:29 AM
Posted May 05, 2008 - 09:33 AM
Posted May 05, 2008 - 11:19 AM
Posted May 05, 2008 - 11:46 AM
yeah I think I am just going to replace the plug and get the drill down. My decomp lever is a bit on the sticky side, anyone know where I can order a new cable and spring from?
Yamaha parts through the TT store right here.
The 2003 YZ450 exhaust cam for your 400 - about $100..
Posted May 05, 2008 - 03:53 PM
I've got a question for you guys though, I've got it down pretty well now to where I can get it to start pretty quick, but today I went to start it and I could not get it for the life of me......then I pulled the hot start and it fired right up.... WHY? The bike had been sitting all day. Sure, it got some sun but it's not like it had been running, and it's not even into the nineties today...
Posted May 05, 2008 - 06:13 PM
Posted May 05, 2008 - 06:44 PM
Posted May 06, 2008 - 12:27 AM
I have a 400 also. I can sympathise with you as it took a while for me to get the starting procedure sorted but now I have the knack my bike starts 1 or 2 kicks cold and first kick warm unless I have stalled it or fallen off ! The maybe 4-6 kicks.
Carburettor set up and cleanliness is vital to easy starting and idling. Also as a previous post said - DO NOT TWIST THE THROTTLE WHEN STARTING. Watch this closely as it is often a habit that dies hard and while we do not think we are doing, we actually are.
Posted May 06, 2008 - 03:23 AM
Take right hand and grab gas tank lid
Slowly Press kicker until it gets hard (TDC)
Hold decomp lever down, push kicker a little bit (to get piston over hump)
Let go of Decomp lever, bring kicker back to top of it's stroke
One good hard kick like you mean it and she should fire right up.
Now, using the hot start button means you're LEANING the mixture out (adding extra air), so you may have too large a pilot jet installed OR you're blipping the throttle either on purpose or accidentally if your hand is on the throttle when you kick it.
Posted May 06, 2008 - 04:41 AM
Yeah that was definately me, I have to say thankyou to you and your guys for helping me out. Definately a change of bike from the CR250, but I love it once its running. I am going to get out on the trails alot more and just practice getting it started. I think I will in the the end, get to changing the cam though. I think I screwed myself off the line having to kick for 15 mins to get it started it blew me out. you are right about the decomp cable though its sticking bad now.
If you were at the Cycleland enduro, I was one of the guys sweeping that was stopping to help you out. First I would get a new cable for your decompression lever, it was sticking on me when I was kicking. I dont think you really have a bike problem, you just need some more time on it, you will get the hang of it. That was a tough race, miles of loose sand and tight woods, not somewhere you want to get to know a new bike. I had a 00 and 01 426, once you get the drill down you will be ok. One thing to remember, when its hot and hard to start, hold the throttle wide open and kick through it about ten times slowly to clear it out, then do the drill, if you watched me, this is what I did the first time I stopped and it fired right up.
Again thanks for your help, it was an awesome event and I will be back next year to finish what I started.
Posted May 06, 2008 - 05:43 PM
Posted May 07, 2008 - 07:50 AM
I put the money into the Hot Start cam in my '99 WR 400, removed the decomp lever, crack throttle twice before kicking, hand off throttle on kick, starts 1st/2nd kick everytime!
I have to agree with this guy. I took my new to me 400, and slapped an '03 yz450 exhaust cam in there for autodecomp. Cost me $112 for the cam. I spent about $40 on shimms trying to find the right ones. Once I got it installed my starting procedure changed a bit. I can now start it by twisting the throttle twice to get two squirts of fuel in there, and then in one or two kicks it starts. Also to that guy that says he starts his bike sometimes while twisting the throttle... I brusied the bottom of my foot real bad doing that when the bike backfired on the down kick. :^)
Posted May 07, 2008 - 04:09 PM
Posted May 07, 2008 - 09:01 PM
Posted May 08, 2008 - 06:41 AM
There are a couple more advantages to the Y450 cam...less stalling when you come in hot to a corner and clamp on the binders HARD, easier to bump start...you should try it...
Yeah I love being able to bump start my 400. The first time I did it after installnig my '03 cam, I was going downhill and through a laid back corner. I had a little too much gas on, and I went from a bumpstart to a sideways wheelie. It was pretty funny looking.
Posted May 09, 2008 - 07:22 AM
Posted May 09, 2008 - 07:37 AM
what your oppinion on putting in the WR 450 03 cam, this bike is generally going to be used for tight enduro type stuff.
I love it. Starts easier. It changes that low to mid range hit, it's alot smoother now. While I was in there I put in a fresh timing chain and re-shimed my valves. I learned a ton about how 4 strokes work on that project. All the people who don't want to do the '03 cam upgrade are going to tell you that they have the starting process down pat... I had it down pat too, and trust me the first time you have to restart on the side of a nasty hill you're going to be glad you did this upgrade.