Correct file for Stihl MS-180 3\8 Pico chain?

[stihlalivekicking]

I'm in New Zealand. My Stihl MS-180 handbook says the correct file for the 3\8 Pico chain is 4mm or 5\32.
I think that's a bit small. Also, I notice from watching US videos about chainsaw sharpening that a larger size is more commonly used.
Advice would be appreciated.

 

[RedneckChainsawRepair]

If you using 3/8LP chain 5/32 is right file. What I use on my 050.

Unless you have that 043 stuff then 11/64. I dont know why that is as I use 5/32 on that too.

shown here in pic

 

[RedneckChainsawRepair]

Here is per stihl. They say 5/32

Chart says 5/32 too.

 

[stihlalivekicking]

Thanks for your informative reply. So my handbook is correct with 4mm. However, as I said earlier, I'm sure I've seen a few US chainsaw sharpening videos where they were using larger files than 5\32 on MS-180 saws. Perhaps they weren't 3\8 Pico chains? Actually, before I posted I tried a 5mm (13\64 is 5.159mm) file on an old chain and it seemed to work OK. It was certainly easier to shape the leading edge of the teeth than with the 5\32 (4mm) file, which I have to keep pressuring upwards to get the same effect. My supplier is sending me a couple of 3\16 (4.76mm) files to try. I'll report back.