Makita chain oiler problem

[TomW]

I have a Makita DCS 540 that has started feeding the chain oil into the sprocket / bar area instead of into the bar and chain. The bar groove and oil holes are clean. The bar is the original Makita and the oil hole appears to line up. No holes are apparent in the rubber oil feed line. Running it without a bar, it pumps oil out the end of the feed tube as it should. Anyone have any suggestions?
Thanks,
Tom

 

[howellhandmade]

I have a Makita DCS 540 that has started feeding the chain oil into the sprocket / bar area instead of into the bar and chain. The bar groove and oil holes are clean. The bar is the original Makita and the oil hole appears to line up. No holes are apparent in the rubber oil feed line. Running it without a bar, it pumps oil out the end of the feed tube as it should. Anyone have any suggestions?
Thanks,
Tom

My Makita 6401 had a buildup of crud behind the guide plate, allowing oil to seep behind the plate. It didn't completely stop oil to the chain, but it reduced it. Sounds like it might be worth a look.

Jack

 

[rScotty]

I have a Makita DCS 540 that has started feeding the chain oil into the sprocket / bar area instead of into the bar and chain. The bar groove and oil holes are clean. The bar is the original Makita and the oil hole appears to line up. No holes are apparent in the rubber oil feed line. Running it without a bar, it pumps oil out the end of the feed tube as it should. Anyone have any suggestions?
Thanks,
Tom

My Makita XCU electric chainsaw does the same thing. Surprisingly useful saw. It cuts nicely but with the exact same oiling problem. Without a bar it pumps like it should. Even the rate adjuster works. But put on a bar and chain and the chain stays bone dry while the sawdust in the sprocket area becomes saturated.
Everything seems to fit fine. Oil is being pumped, just not onto the chain.
I cannot figure this one out in spite of a lifetime of mechanical work. I've been hand oiling it, but that's hard on bars.

All my other saws are Stihl, but I do like this Makita electric. Much better saw than I expected.

 

[hwrdpromac7900]

My Makita XCU electric chainsaw does the same thing. Surprisingly useful saw. It cuts nicely but with the exact same oiling problem. Without a bar it pumps like it should. Even the rate adjuster works. But put on a bar and chain and the chain stays bone dry while the sawdust in the sprocket area becomes saturated.
Everything seems to fit fine. Oil is being pumped, just not onto the chain.
I cannot figure this one out in spite of a lifetime of mechanical work. I've been hand oiling it, but that's hard on bars.

All my other saws are Stihl, but I do like this Makita electric. Much better saw than I expected.

Welcome to the chainsaw madness!

 

[pioneerguy600]

The bar must seal tightly to the bar pad on the chassis, many times little pock marks happen,even paint chips on the bar pad can allow bar oil to flow down between the bar and the pad. Make certain the bar pad itself is perfectly flat and smooth, no divots,pock marks or paint chips. Make certain the bar itself is flat sided and can seal tight to the bar mount pad.