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Author Topic: stihl ms661  (Read 2148 times)

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Offline 630red

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stihl ms661
« on: October 16, 2015, 07:19:59 PM »
hi guys great info on here would like some advice,does the ms661 need 5min wot in wood to break it in?

Offline ZeroJunk

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Re: stihl ms661
« Reply #1 on: October 16, 2015, 07:28:16 PM »
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.

Offline Texas-Jim

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Re: stihl ms661
« Reply #2 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.
What we do in life echoes through eternity.

Offline 49er

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Re: stihl ms661
« Reply #3 on: October 17, 2015, 09:32:45 AM »
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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Offline Spartan

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Re: stihl ms661
« Reply #4 on: October 17, 2015, 02:47:28 PM »
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

Offline Texas-Jim

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Re: stihl ms661
« Reply #5 on: October 18, 2015, 08:16:36 PM »
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.

Offline Kingmt

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Re: stihl ms661
« Reply #6 on: October 18, 2015, 11:40:01 PM »
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.
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Offline HolmenTree

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Re: stihl ms661
« Reply #7 on: October 19, 2015, 07:23:55 AM »

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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