deye223
Addicted to ArboristSite
Your 660s must be different to here in Australia ours have a large dog like the 460 but the bottom spikes angle slightly upwards to stop it pulling the bar into the wood and stalling the chain .I thought of the easiest way to explain this last night..
If you bought a :
440 R
460 R
660 R
All three have the same inner dawg.
The 440 and 660 have the same outer dawg.
The 460 has the different outer exclusive to itself.