Question about Standard Oregon Chainsaw Chain For Mcculloch Chainsaw 18" Bar Length 64 Drive Links 3/8 0.05 Gauge Chiesel Chain

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McCulloch Mac 120 oiler

Just given a Mac 120 that hadn't been run in years, took the entire saw apart, cleaned it up including carb put it back together, got it running great. I made 1 mistake, there is a machine screw toward the bottom of the front cover, (not a fastener) I didn't count how many turns to remove it and I think it may be for the oiler adjustment, saw now seems to leak bar oil when it is not being used. Do I need to make an adjustment or is it common for them to leak when stored. Any suggestions?



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I think the problem is the funny rubber-hose-connection of the oil tank to the oil pump. It looks quite flimsy to me... But if you want I can have a look how this screw is adjusted...Bye, also tom

Posted on Nov 01, 2009

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I've 7 chainsaws (1 Mac 110 & 1 Power Mac 320), all except the Husky 359 empty their oil tanks all over my bench if I forget to remove it. HTH
The machine screw is the oiler adjustment. The Owner's Manuals of both saws say 1/4 turn adjustment at a time. No starting point. To far in will probably damage the pump.

Posted on Nov 01, 2009

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I have several mcCulloch chainsaws just had my 110 mac apart for a basic cleaning and reassembled and had a oil leak . took it back apart and found that the flimissy t comming of the oil pump wasn"t seated in the tank all the way i used a flashlight and grew another hand but finally got it to seat all the way in no more leak hope this helps you dave

Posted on Feb 07, 2010

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