KFX 400 Valve adjust help!

[Tim420]

Hey guys, I haveve a question about the valve adjustment on a 2003 KFX 400. I know what the clearences are, however I'm not sure which timing mark to line it up with @ TDC. Also is this bike a "wet" ignition so that I'll have to drain the oil before I pull the case off? Or does the little site hole work effectively? If anyone has the process outlined, it would be greatly appreciated. TIA

Tim

[LoKi]

Here you go.

http://www.allthingsmoto.com/photopo...3805Valves.jpg

http://www.allthingsmoto.com/photopo...805valves2.jpg

http://www.allthingsmoto.com/photopo...805valves3.jpg

http://www.allthingsmoto.com/photopo...805valves4.jpg

http://www.allthingsmoto.com/photopo...805valves5.jpg

[Tim420]

Thanks!!

[LoKi]

No problem. Also make sure the Cams are in the 10 and 2 oclock position before you take your reading. Just keep going around till they're at that position on TDC.

[2fun]

Good job LoKi!

[Woody_YZF]

I didn't even know we had that stuff in here. Good to know. Also welcome to the site.

[LoKi]

Originally posted by Woody_YFZ
I didn't even know we had that stuff in here. Good to know. Also welcome to the site.

Actually, I have it on disc. I just saw the thread and took pics with Paint Shop of the manual to post for him.

[Woody_YZF]

Originally posted by LoKi
Actually, I have it on disc. I just saw the thread and took pics with Paint Shop of the manual to post for him.

Right on. That works too!!

[Tim420]

Thanks for the welcome! My buddy has had the quad for almost 2 years and never adjusted them. I could've slapped him silly. You guys think that an adjustment is all it needs. They were clacking pretty loud. It quiets down when warm and it does fire right up.

[LoKi]

That's a long time to wait before checking the valves. Hopefully he didn't tweak the valves. Which, could lead to more complications and big bucks down the road. He should have checked them after the first month, and every 6 months after.

One of the biggest issues with these 4 strokes now days is not having the correct valve clearance.

[Tim420]

I agree completely. I tell these guys all the time and they act like I'm being "swell-headed". I guess they'll learn. Thanks!

[CR-FLAVOR]

LOKI, CHATROOM... NEED ADVICE WITH MY BIG FAT Z400

[Woody_YZF]

I had my KFX for a year and a half and never adjusted the valves. My bro. checked his valves and they were still in spec, so I never bothered with mine. I need to check them on my YFZ, I've had it almost 6 months.

[LoKi]

Originally posted by Woody_YFZ
I had my KFX for a year and a half and never adjusted the valves. My bro. checked his valves and they were still in spec, so I never bothered with mine. I need to check them on my YFZ, I've had it almost 6 months.

I've had mine for almost 1.5 years, and they're still within specs. Main thing is to listen and keep a eye on them. I've checked mine 3 different times now.

The engine in the Z/KFX is damn near bulletproof and requires very little maintenance to keep it running. I'm all for preventative maintenance. Especially when it comes to valves. I'm only going on what the mechanics told me to watch. I'm sure they know better than anyone.

I would have bought the YFZ, but they were first year and at that time they were having problems. I watched numerous people with them pushing them or getting pulled back to camp. I know they finally got it right. I've even thought about getting one, but my Z runs great, and I want another dirtbike instead.

[Tim420]

Originally posted by LoKi
I've even thought about getting one, but my Z runs great, and I want another dirtbike instead.

That's what I like to hear.

[Woody_YZF]

Originally posted by LoKi
I've had mine for almost 1.5 years, and they're still within specs. Main thing is to listen and keep a eye on them. I've checked mine 3 different times now.

The engine in the Z/KFX is damn near bulletproof and requires very little maintenance to keep it running. I'm all for preventative maintenance. Especially when it comes to valves. I'm only going on what the mechanics told me to watch. I'm sure they know better than anyone.

I would have bought the YFZ, but they were first year and at that time they were having problems. I watched numerous people with them pushing them or getting pulled back to camp. I know they finally got it right. I've even thought about getting one, but my Z runs great, and I want another dirtbike instead.

Absolutely nothing wrong with the Z. I've had 2 '04 YFZ's and my first one I had to replace the impeller shaft and seals on it and the one I have now is starting to go that route too. Other than that, absolutely no issues. It cost me $30 to fix it.