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    marleyjeanne's Avatar
    marleyjeanne Posts: 17, Reputation: 1
    New Member
    		  
    #1

    Jun 28, 2016, 09:31 AM
    Chainsaw chain
    How do I determine what size file to use?
    HLSupply's Avatar
    HLSupply Posts: 3, Reputation: 3
    Parts for Chainsaws and Other Small Engine Equipment
    		  
    #2

    Jun 28, 2016, 11:30 AM
    Hi MarleyJeanne,
    You first have to know the pitch of the chain. You can match that number (in inches) to the diameter of the required round file size.

    -- .404 chain use 5.5mm (7/32”) round file
    -- 3/8 chain use 5.5mm (7/32”) round file
    -- .325 chain use 4.8mm (3/16”) round file
    -- 3/8 lo pro chain use 4mm (5/32”) round file
    marleyjeanne's Avatar
    marleyjeanne Posts: 17, Reputation: 1
    New Member
    		  
    #3

    Jun 28, 2016, 12:37 PM
    The bar says it's a 325 itch but I don't see any #'s on the chain itself that tells me anything--on the chain (Oregon) the top tooth has #25 and bottom tooth has #22..
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
    Uber Member
    		  
    #4

    Jun 28, 2016, 02:13 PM
    Take the saw to HD, Lowe's or Ace. They can easily match the file to the size needed. I use a 7/32 stone in a Dremel. You also need to do a depth check on the rakers. If the chain gets cut too much, the untrimmed rakers will bottom out and the chain will not cut. They have a tool for that and you use a fine flat file, not a chain file.
    HLSupply's Avatar
    HLSupply Posts: 3, Reputation: 3
    Parts for Chainsaws and Other Small Engine Equipment
    		  
    #5

    Jun 30, 2016, 08:09 AM
    The bar tells you what the pitch of the chain is. You can't put the wrong chain on the bar, so according to what you said, use 4.8mm (3/16”) round file.
    ScottGem's Avatar
    ScottGem Posts: 64,966, Reputation: 6056
    Computer Expert and Renaissance Man
    		  
    #6

    Jun 30, 2016, 08:15 AM
    When I wanted to replace the chain on my saw, I simply googled the model of the saw and got the manufacturer's page listing the parts.
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