Chainsaw Repair

Does your fuel tank have an aluminum bushing pressed/glued into the tank divider (that the line passes through)?  If so, your saw likely has had the 'conversion kit' installed on it some time in the past.  The kit consisted of that bushing, some glue/sealant, a length of line, a fuel filter, and another carburetor (with the smaller inlet barb to match the line).  Just replace the line with a fresh piece of matching size (IIRC it is 1/8" ID 3/16" OD).   Would you please post a pic or two of the carb box area in your saw to show the bushing for those folks here that haven't seen one?

WOW !...that was quick...I barely sat back down with my evening beverage..aka Jack n Coke !. But seriously. my saw does not have that conversion for sure ! Do you know of the correct IPL that shows just bulk line and the one with the conversion ? Once again, thanks for being so quick !!!!

Phillip

You're welcome.  I just happened to be looking in the Mac section shortly after you posted.  I don't think I've seen that kit listed in any IPL's.  If it its, it'll be in an IPL for a late 10-series saw like a 4300 or DE80.  Seen a few of those kits listed (and pictured) on ebay.  If your saw doesn't have the conversion bushing, then it should indeed take the molded line with the 'grommet' section in the middle. 

That hole in the tank for said 'grommet section' is around 10mm/.401" IIRC.  There were two molded lines, but both are shaped the same in the middle.  One has a 'bell' shaped section on the tank end that takes a plug of felt as a filter, while the other has a smaller end that takes a 'normal' saw fuel filter.  Now I'd really like to see a pic of the carb box area of your saw. 

I've seen where guys have cut the grommet section out of an old fuel line, crammed that back into the tank cover hole, and then ran a smaller line (or a length of copper or aluminum tubing) through that grommet section.

Here is a pic of the fuel line entering the upper fuel tank cover....

These are the two styles of molded lines.  You'll notice that the 'grommet' section in the middle is only slightly larger in diameter than the OD of the end that fits over the carb inlet barb.

Ok, got the fuel line replace with the Oregon 3/32 x 3/16 bulk line...worked perfect for that leak ! Yeah, after bench testing the saw, I came back to several minutes later to discover fuel still puddl'ing in the carb cavity !!!  Well, wait til dark and let's see where this sheen of fuel is coming from. The fuel was coming from the throttle shaft so I then knew the metering needle was not sealing off. Removed carb and disassembled. I,ve never worked on an SDC carb so here is what I found ...the last person to clean the carb,which he didn't put a kit in it cause the leaf valves on the diaphragm were shriveled up, but he did not engage the notch of the metering diaphragm into the notch of the hinge ! He just laid it on top....he got the other side of the hinge into the needle...so...it was a half a%% job ! Put a kit and she is good to go ! I love the sound at idle ! Thanks for the help guy's !!!!

Phil