JD 51SV, rebadged Echo CS-510ELV disassembly

[clearchris]

Hey guys. Found an old chainsaw in the tool shed left from gramps, a JD 51SV which is a rebadged Echo CS-510ELV. It has good compression, turns over nice with some starter fluid in the carb. BUT, the gas tank has a hole at the bottom, it pours the gas straight out. Of course, the gas tank is buried under the crankcase. Yeah, I know they don't make the fuel tank anymore, but I'm somewhat passable at plastic welding polypropylene tanks. Worst case, I can 3d print a splice and epoxy it back together. I promise pics of my final solution.

I'm usually pretty good with these diagrams, but I can't see a direct way of getting the tank out. Anyone have any ideas?

Parts diagram:

https://www.echo-usa.com/getattachment/94b765f6-1991-41bf-ba5f-5d2562bd920e/CS510EVL_010287.pdf

User manual:

https://www.echo-usa.com/getattachment/842cc8fa-9039-4506-a20d-f6eff116d4e6/CS510evle_010186.pdf

Thanks!



Edit: I did some searching around for the fuel tank, even though I'm sure they stopped selling them years ago. I found some pics of the top assembly for a 500vl (similar but maybe not the same), on ebay and it looks like taking the top off is the way to go.

Echo 500VL Used Chainsaw Parts Rear Handle Fuel Gas Oil Tank 35111012331 Bx1.6 | eBay

Here is a used handle from an Echo CS-500VL chainsaw. Throttle trigger has jagged edge as shown in pictures but still works. Compatible with John Deere 55V & maybe others. Serial number: 0070678. This is an OEM Echo part.

www.ebay.com

 

[clearchris]

Well, I look apart more of the saw than I'd have liked to, and there were a few tricks, but it wasn't too bad. Chainsaw needed a good cleaning anyway, everything was caked with greasy sawdust. There was a fair sized split in the bottom of the tank near the seam. I plastic welded it with some HDPE rod, seems to be strong, I'm going to let it sit overnight with water to test before reassembling.