Engine hunting

[lew600fazer]

I have noticed that occasionally my FZ1 appears to be hunting, I am finding that the idle speed once warmed up is a bit irratic. It is nothing major but it is annoying. My idle speed setting is about 1050/1100 rpm.
I am aware the plugs have never been changed on this bike , now just on 12750 miles, I know they should be changed at 10k? yes?
Before I brought the bike down to Spain it was serviced and I asked for the plugs to be changed then. The service tech told me he had had the plugs out and they where like new.
The bike runs okay but now and again I get the feeling when I am tootling along the engine is hunting. I got my mate to ride it but he thinks it is my imagination. Having said that the same fella came back and did not want to give me the bike back, he said ride my 900 Hornet home for me and I will jst test it a bit more. Think I have found a buyer if I ever decide to sell.
His Hornet is nice but like all Hondas it was sending me to sleep

[chaz]

I wonder what my plugs are like, at 37k+ miles?

[darrsi]

I have noticed that occasionally my FZ1 appears to be hunting, I am finding that the idle speed once warmed up is a bit irratic. It is nothing major but it is annoying. My idle speed setting is about 1050/1100 rpm.
I am aware the plugs have never been changed on this bike , now just on 12750 miles, I know they should be changed at 10k? yes?
Before I brought the bike down to Spain it was serviced and I asked for the plugs to be changed then. The service tech told me he had had the plugs out and they where like new.
The bike runs okay but now and again I get the feeling when I am tootling along the engine is hunting. I got my mate to ride it but he thinks it is my imagination. Having said that the same fella came back and did not want to give me the bike back, he said ride my 900 Hornet home for me and I will jst test it a bit more. Think I have found a buyer if I ever decide to sell.
His Hornet is nice but like all Hondas it was sending me to sleep

RPM sounds too low to me, which would make it hunt.
I'd get it warmed up then try it around the 1200 - 1250 mark, or just nudge it up a tiny bit at a time and see if it improves things.

[lew600fazer]

Cheers Darrsi, I thought I had the ilde speed set okay, @1050/1100 just checked the book again 1100/1300rpm. 1050/1100 was for my SX muppet or what.
Lew

[Hedgetrimmer]

The mechanic that looks after mine says all the R1-based engines hunt a little at idle. I'm not sure if he means later ones too, but if you put your hand over the exhaust, it stops doing it. I hadn't really noticed until he pointed it out to me. It's not a fault or a problem in the case of the earlier engines, FI may be different? Mine idles at somewhere around 1100 to 1200 rpm (but is, of course, a gen 1).

[locksmith]

Throttle bodies may well need balancing