I need the stock rpm at idle for my 2002 ZR 800. I am thinking that it is to low now as the sled vibrates somewhat. Or do the big blocks just naturally shake more? It doesn't appear to be a broken motor mount or any thing like that. If I remember right when I started it last time it idled right around 1000 rpm, seems a little low but not sure.

Thanks,
Z-Rider

The carbed 800s are a little finicky sometimes.
Just leave it where it's at for now. Wait till it gets cold outside.
1000 is fine and yes they do shake a little more.
Spec is right around 1300.
I keep mine at closer to 800 because when it's really cold the idle like to hang up around 2000. Then I just burped the choke and she comes down.

Thanks! ZR84EVR you have been a wealth of info on this sled so far thanks again.

Z-Rider

Originally posted by Z-Rider@Sep 15 2005, 03:09 PM
Thanks! ZR84EVR you have been a wealth of info on this sled so far thanks again.

Z-Rider
432045


Not a problem, glad to help.

Just remember that what I tell you is only what I have found with my sled. Your's may be different.
Other people may have found and will tell you different things too.

Did you ever check your power valve clearance.

Originally posted by ZR84EVR@Sep 16 2005, 10:54 AM
Not a problem, glad to help.

Just remember that what I tell you is only what I have found with my sled. Your's may be different.
Other people may have found and will tell you different things too.

Did you ever check your power valve clearance.
432192

No I have not had the time but I am going to try to do it this week. I just have to pull the power valve out and look down the bore for scuffing on the side of the piston right.

Thanks,
Z-Rider

Originally posted by Z-Rider@Sep 18 2005, 10:10 AM
No I have not had the time but I am going to try to do it this week.* I just have to pull the power valve out and look down the bore for scuffing on the side of the piston right.

Thanks,
Z-Rider
432406



Yep.

I always thought the factory spec. for '02 ZR800 idle was 1500 rpm.
I usually run mine around 1300 to help eliminate that high idle syndrome although opening the air screws helped most. That advise came right from Greg Spaulding, AC's chief 2 stroke engineer and the architect of the 800 twin.

Originally posted by MUSKOKA800@Sep 21 2005, 03:03 PM
I always thought the factory spec. for '02 ZR800 idle was 1500 rpm.
I usually run mine around 1300 to help eliminate that high idle syndrome although opening the air screws helped most. That advise came right from Greg Spaulding, AC's chief 2 stroke engineer and the architect of the 800 twin.
432913



Yes, air screw does help.

That's why I said around 1300. I can't remember the exact. Plus I think it's a range anyway, maybe it was 13-1500.

Anything under 1500 makes a huge difference in controlling the annoying idle hang up / lean ping.