Running in 880 for milling?

[Arbtech Tree Services]

Evening all,

 

From young i was always taught to run things in gently. I started my working life in a motorbike shop where i was taught that the best oil prescribed for machines was no good for running in as it protected the engine too much.

 

Years on i knew someone who would buy new bikes (mostly Fireblades) and cane them from the showroom door and always had good performance and life from them.

 

When i bought a Navara i babied it for the first thousand miles and it's cack compared to others.

 

So nowadays i'm inclined to go a bit harder from the word go with engines.

 

However i wonder if taking an MS880 from the box and putting it straight to work milling 14' of 36" 3 year old Oak is taking this a bit far. Surely that's too much.

 

Do i need to run a few tanks cross cutting first? I'm thinking yes.

 

By the way i run Stihl HP Super oil @ 50:1.

 

Thoughts please.

 

 

Regards,

 

Steve.

[tree_beard]

saws like running hard from the off, just avoid revving the nuts off it with no load (same as anything really). for milling you should certainly be loading the engine, and a new saw should cool better than a well used one. just blip the throttle a bit and let it idle some to cool after long cuts. check plug colour, tune with a tach and crack on.

[Arbtech Tree Services]

Cheers, sounds good to me

 

Regards,

 

Steve.

[Big J]

Got a new MS880 the other day, and used it normally from the off on the sequoia milling job I recently posted about. 8 or 9 tanks through in a couple of days, no problems. I've never gently run in new saws myself.

[spudulike]

Technically you are trying to make the most of the honing roughness to take the piston and ring down to match the bore before it glazes up and has little friction.

 

You should avoid long cuts from the off but do use it for shorter stints flat out as normal.

 

Milling is pretty full on so would do a bit of ringing up for the first few tanks before going at a cut that will take minutes to complete - unless you can rest the saw and let it cool in the milling cut before milling the next few feet.

 

The bore will be rough to start with and it is this that will aid your running in but it will also generate heat that you need to dissipate to begin with!