Running in a saw

[Boon]

On a new 880 dealer told me it would take about 8 tanks for it to be run in.

Have been running mix at 25:1, using the saw at half **** while cutting, at times varying the revs in free spin ..........high for a minute (not flat out) then for another minute middle , and then slower & so on.

Supposed to use it next weekend on a job, have done four tanks so far but am concerned 8 tanks for running in and 8 to 10 hours of straight milling will stuff it........damn thing cost more than my landcruiser to purchase.

Any one got tips / hints for running in an 880.

 

[BobL]

I did 5 tankfuls at 40:1 and then milling a small Spotted gum at variable speed and then went WOT after that.

 

[2treeornot2tree]

I dont know if there is a different break in for milling the regular cutting but I know whenni bought my 880 that I wasnt told about no break in I procedure. My stihl dealer is a good friend and a gold series dealer so I cant believe he wouldn't have said summing about it if you were supposed to

Sent from my SCH-I605 using Tapatalk

 

[BobL]

The user manual says

A factory new machine should not be run at high revs (full throttle off load) for the first three tank fillings. This avoids unnecessary high loads during the break-in period. As all moving parts have to bed in during the break-in period, the frictional resistances in the engine are greater during this period. The engine develops its maximum power after about 5 to 15 tank fillings.

But I do know users that have gone WOT from the first tankful

 

[mdavlee]

I've never ran a new saw part throttle. Just keep the unloaded revs to a minimum and no extended time cuts in the first couple tanks.

 

[Boon]

The user manual says

But I do know users that have gone WOT from the first tankful

Thanks BobL for some reason the book I have does not discuss this...or from what I have seen. Looking back the 660 took quiet a while to get up to full power at the top end, till then it just did not seem comfortable at full revs even after the running in period.

I do know through another source that if the saw shows signs of not being run in warranty may not be valid.

Before purchasing the 880 I looked on a bidding site for a second hand saw and asked owners if the saw had been run in, if so how and at what mix ratio - always no answer, that and the fact most saws went for close to a new purchase price.

Not sure way a person would buy a saw at that level of cost without it being run in.

Any machine is an investment and should be care for to get maximum life out of it.

If dealers are not conveying this to customers then maybe there is a problem.

 

[sachsmo]

The old saying was "break them in like you're going to use them"

 

[Greenland South]

Broke my 3120XP in running 50/1 full throttle. Cutting slabs of course. Been roughly 30 tanks of fuel through it. Make it work, you need to seat those rings.

 

[BobL]

The Husky 3120 manual says

Running-in
Avoid running at a too high speed during the first 10 hours

Whatever that means.

 

[hamish]

For those that consider having a fuel/oil ratio at 25:1 and 40:1 etc, you must adjust the carburetor to compensate for this. Simply adding more oil to your fuel will result in a leaner running engine. The difference between lean and rich is the air and fuel charge mixture, not the fuel oil mixture.

 

[KenJax Tree]

The user manual says

But I do know users that have gone WOT from the first tankful

Its says not to run WOT off load meaning don't just stand there and rev the snot out of it. Put it in some wood and go WFO right out of the box,chain saws aren't made to run at half throttle.


Sent from my AutoTune carb

 

[sachsmo]

Yup,

get some pressure behind them rings.