Question about McCulloch 16 In 4.5 Hp Electric Chainsaw With Carrying Case MCC4516FK

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Mcculloch EM250-14 RPM Slowed suddenly

I have a Mcculloch Electramac EM250-14 that I have used intermittently over the years around my yard without a problem. On May 8th I had a large tree fall down in my yard after a storm. I have slowly been limbing it since. I am not physically able to use it for hours at a time. Today while doing some of the limbs that were about 2-3 inches in diameter it suddenly slowed to about half speed. I stopped it and in a couple of minutes tried to use it again. It still cut but then smelled hot so I set it aside and took a couple of hours break. It still had plenty of oil. When I went out to try it again the same thing happened. I also took the blade off and ran it for a few seconds with no change. The tree is about 120-140 feet from the house if that helps. Any ideas what the problem might be? I still have a pile of the small branches to cut up.

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The chain must be properly sharpened to cut efficiently and the oil pump must be feeding oil to the chain/bar. Check the oiling by running the saw with the bar tip near some cardboard for a few moments--it should throw off a thin line of oil on to the cardboard. If not, remove the bar and chain and run the motor for a few moments--it should ooze oil out of a side port that exits near the drive end of the bar. If still nothing, check the oil tank filter for plugging, then the oil pump itself--it may have a plastic gear that has stripped it's teeth. Once you get oil from the side port, clean the oil passages in the drive end of the bar, and reinstall the bar and chain. Hope this helps!

Posted on May 27, 2010

  • drallim May 28, 2010

    If you are running the saw with a power extension cord the full distance from the house and the cord wire size is smaller than 12 gauge, you are likely having severe power loss at the saw. It would be best to have someone with a larger gas powered saw cut the tree into manageable pieces so that the work you are doing can be closer to the house. 100 ft 12 ga extension cord is about all that you want between you and the house. Good luck!


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She is English? You can download a manual here:
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Using this IPL as a guide it appears reasonably simple.
I'd ensure it is unplugged, the chain brake disengaged, and try to move the chain by hand (gloves are a good idea). If you can't move the chain or the clutch cover seems stuck use the "Service Locater". If you can move the chain; remove the clutch cover, loosen the bar and remove the chain. I see no reason the saw cannot be operated for short periods without the clutch cover to aid in isolating the problem. She will oil your mate won't be happy if you oil the table. GL
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