My f4i tends to grind from first to second at high rpm I don't think it's the clutch and lower rpms are smooth as butter. I'm running rotella t6 10w 40 full synthetic and the bike only has 5000 miles. It doesn't do it every time just when I'm really on it. When I preload the shifter it reduces the grinding but doesn't get rid of it. Any ideas on what I can do.

 

Worn shift fork perhaps? Try actual motorcycle oil and see if it makes a difference [probably won't but worth a try]

 

I have no idea what a shift fork is tbh how would one go about testing that.

 

Would always use the clutch when going up 1 to 2 , but when you preload the shifter for going up the other gears do you throttle off slightly to change gear without the clutch?

 

I have shifted without the clutch before but not for first to second I just found out my idle is about 200 rpms higher then what it should be so I'm gonna adjust that before anything.

 

Yes certainly bring the idle down to correct idle speed

 

I read that might be the reason it's grinding I'm also gonna tighten the cluch a bit to make sure its fully disengagojg even if it slips a bit to rulk it out.

 

Do you blip the throttle when changing down and is there any problem there?

 

There isn't problem while going from second to first even at a high speed like 35 I tested with blipping and not blipping

 

Then hopefully the right idle speed should sort it out