A simple procedure covered in the manual. The chain did indeed have 57 links. Now about the chainsaw, it works great. I used the battery from my Husqvarna weedeater. I think battery life is great as well.
Husqvarna 966906738 Features & Specs
Powerful 18-inch gas-powered chain saw ideal for landowners and others who cut less regularly
3.2 HP X-Torq engine reduces harmful exhaust emissions and increase fuel efficiency
LowVib vibration dampening; minimal effort via Smart Start feature and combined choke/stop control
Purchase this Husqvarna handheld item along with 3-32 ounce cans of Husqvarna pre-mix fuel, register your product online, and your consumer warranty will be extended from 2 years to 4 years
Editor's Impressions Of The Husqvarna 966906738
Tool Motor Power
Value For Money
Husqvarna 966906738 Final Thoughts
"Just cut up 4, 60ft oaks."
Which came out after I got the Husqvarna saw. With that there are always compromises. We needed to clear out trees and bush. This is a well-built Heavy Duty corded chainsaw. I think battery life is great as well.