How long for break in period

In the stihl manual for the 460 it says three tanks but I am still feeling slight gains in power even after 5-7 tanks is this unusual for a bigger saw or sound normal to everyone.

Power gains on my MS250 stopped after about 5 tanks I have been pretty careful with both during the first three tanks even when cutting I have taken my time so as not to over-rev and so on..

Both the MS250 and the MS460 are stock except removing the spark arrestor on the 250 (which I am going to replace when doing muffler mod)my tach should be in next week I plan on muffler modding both of them once I have the tach


Thanks in advance
(I did do a search before asking but didn't see exactly what I was looking for)

10 tanks is where a new saw hits the sweet spot.

romeo said:

10 tanks is where a new saw hits the sweet spot.

Click to expand...

...or 20 - no firm rules, really......

Yeah...after six tanks my 660 is still gaining...

Not trying to derail this but anyone know the fuel capacity of a 361? I havn't bothered to keep track of how many tanks I've burned but do know I've put about a gallon and a half through it.

CC per gallon

wood4heat said:

Not trying to derail this but anyone know the fuel capacity of a 361? I havn't bothered to keep track of how many tanks I've burned but do know I've put about a gallon and a half through it.

Click to expand...

One gallon is 3785 CC so on the 361 that should be about 8/9 tanks based on gallon and a half
as specs are 685CC tank on that saw

geocom said:

One gallon is 3785 CC so on the 361 that should be about 8/9 tanks based on gallon and a half
as specs are 685CC tank on that saw

Click to expand...

Yes, .685 litres - and that last a long time, very fuel-efficient saw!

Ime, it is a "20 tanks" saw.......

Cool

Well that is good to know about the 10-20 tanks thing curious about where my 460 will end up as far as power goes feels powerful now but that is coming from the MS250 so quite a big jump in saws

SawTroll said:

...or 20 - no firm rules, really......

Click to expand...

+1 I asked this same question a long time ago.As a general rule for me and only me I find 10 tanks and your saw starts to run better. But my problem is I tend to change a few things before I get that far lol.

geocom said:

Well that is good to know about the 10-20 tanks thing curious about where my 460 will end up as far as power goes feels powerful now but that is coming from the MS250 so quite a big jump in saws

Click to expand...

I know what you mean every tank my 7900 gets it feels better! But I am a sucker for power even if I don't need it. Example I bought a 1990 Blazer full size in 1991. It came with a 350Chevy I put a 383 in her then a 502 big block Oh of course changed axles transfer, case and lift twice. Added so many things air locker.'' OKAY IT Is A SICKNESS''

I will stop wile I am ahead but might I suggest a 8pin and 20'' bar after you mod the muffler.

I might have changed the subject a bit here, But to me it looks like the early on set of CAD. Your just waiting for that 460 to hit full power lol

Yup after 10 tanks she will start to loosen up, but it's going to take some time before the rings really start to seat. Make sure you put some load on the saw, that will help seat the rings better and faster on a bigger saw like the 460.

SawTroll said:

Yes, .685 litres - and that last a long time, very fuel-efficient saw!

Ime, it is a "20 tanks" saw.......

Click to expand...

I thought a gallon was 3.73 litre, of course a gallon is not a gallon, a imperial or old Canadian gallon was more like 4.4 litre same with a imperial quart it was bigger than a U.S quart but that makes sense
Dont mind me this is a personal grip I have with gallons being old enough to remember when gas was sold by the gallon here.

Austin1 said:

I thought a gallon was 3.73 litre, of course a gallon is not a gallon, a imperial or old Canadian gallon was more like 4.4 litre same with a imperial quart it was bigger than a U.S quart but that makes sense
Dont mind me this is a personal grip I have with gallons being old enough to remember when gas was sold by the gallon here.

Click to expand...

Lots of different "gallons" out there - litres is more reliable - but in this case gallons is more than accurate enough - just say between two and tree..... :censored:

Ok I honestly didn't want to derail this thing but appreciate the response to my question. Now to try and put this thing back on track:

1 U.S. gallon = 0.833 Imperial gallon
1 U.S. gallon = 3.785 liters
1 Imperial gallon = 1.201 U.S. gallons
1 Imperial gallon = 4.546 liters
1 liter = 0.264 U.S. gallon

from : http://www.tfcbooks.com/referenc/measures.htm

Now back to your regularly scheduled posting