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stihl ms661

Started by 630red, October 16, 2015, 07:19:59 PM

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630red

hi guys great info on here would like some advice,does the ms661 need 5min wot in wood to break it in?

ZeroJunk

I don't know that it needs any break in at all, but 5 minutes isn't going to do anything.

Some think they pick up a little compression and power after a few tanks of fuel.

We may be talking about two different things. If you are talking about the electronic fuel control adjusting itself then maybe so.

If it is the latter the manual says 5 uniform cuts at full throttle.

Texas-Jim

The saw should be kept under 85% power for first couple tanks. Im going from memory so i think thats right.
What we do in life echoes through eternity.

49er

Quote from: Texas-Jim on October 16, 2015, 07:37:39 PM
The saw should be kept under 85% power for first couple tanks. Im going from memory so i think thats right.
I don't understand?
The fuel control can never calibrate itself unless at wide open throttle.
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Spartan

Run it the way you will when you work right from the get go.  I run my saws hard and have never done a break in procedure, they are all fine.

I consider some stuff just paranoia

Texas-Jim

oops sorry i mis spoke, if look at manual on page 40 there is a break in section. It says shouldn't be ran at high revs (unloaded) for first three tank fulls. There is no other break in procedure.
What we do in life echoes through eternity.

Kingmt

My MS660 had a tag on it that said not to run at WOT for the first three tanks & never run it at WOT not under load.
Sawmill=Harbor Freight Item#62366
Chainsaws=MS180CBE(14"), MS290(18"), MS038(20"), MS660(20" & 36")
Staff=1Wife & 5 Kids :)
Please excuse my typing. I don't do well at catching auto correct.

HolmenTree

Quote from: ZeroJunk on October 16, 2015, 07:28:16 PM

We may be talking about two different things. If you are talking about the electronic fuel control adjusting itself then maybe so.

If it is the latter the manual says 5 uniform cuts at full throttle.
Looks like all the info 630red needs is right here.
Making a living with a saw since age 16.

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