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HOW TO IDENTIFY YOUR CHAIN

SELECTING THE CORRECT CHAIN FOR YOUR SAW CNA BE A MINE FIELD HERE IS A GUIDE TO ASSIST YOU IN SELECTING THE CHAIN YOU NEED.

THERE ARE  MAIN CHAIN SAW CHAIN MANUFACTURERS, BOTH MAKE CHAIN FOR EVERYONE,. 
OREGON ( YOU WILL FIND THIS AS STANDARD ON MOST SAWS EXCEPT STIHL, THEY MAKE THE CHAIN FOR CARLTON AND HUSQVARNA ETC
STIHL, WELL THEY HARDLY NEED AN INTRODUCTION. ( PROBABLY TE BEST IN THE WORLD IN CHAIN TERMS) 

TO SELECT A CHAIN YOU NEED TO KNOW 3 DIFFERENT THINGS.
THE PITCH THERE ARE 3 POPULAR TYPES 3/8 LOW PROFILE, .325 AND 3/8 I WONT GO INTO THE DIFFERENCE HERE.
THE DRIVE LINK WIDTH (THIS MUST BE CORRECT OF THE CHAIN WONT FIT IN THE BAR CORRECTLY)
THE LINK COUNT, DETERMINED BY COUNTING THE DRIVE LINKS OR THE CHEAK STRAPS OF A CHAIN.

MOST CHAINSAW BAR MANUFACTURERS HAVE THE APPROPRIATE CHAIN FOR THE BAR PRINTED ON THE SIDE OF THE BAR. THIS CAN HOWEVER WEAR OFF WITH TIME.


SO A QUICK GUIDE
OREGON CODE
90 = 1.1 MM DRIVE LINK 3/8 LOW PROFILE CHAIN
91 = 1.3 MM DRIVE LINK 3/8 LOW PROFILE CHAIN
95 OR 20 = 1.3MM DRIVE LINK WIDTH .325 PROFILE CHAIN
21 = 1.5MM DRIVE LINK WIDTH .325 PROFILE CHAIN
22 = 1.6.. DRIVE LINK WIDTH .325 PROFILE CHAIN
73 = 1.5MM DRIVE LINK WIDTH 3/8 PROFILE CHAIN
75 = 1.6MM DRIVE LINK WIDTH 3/8 PROFILE CHAIN
ON OREGON CHAINS THE DRIVE LINKS ARE STAMPED WITH A NUMBER WHICH CAN BE DECIPHERED ABOVE
ON STIHL CHAIN THE DRIVE LINKS ARE STAMPED WITH A NUMBER 1, 3, 5 OR 6 WHICH IDENTIFIES THE WIDTH IE 3 MEANS 1.3MM DRIVE LINK WIDTH.






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