Echo 620p FKWS Build

[farminkarman]

I found out that I didn’t have a loop of 70dl chain to match the bar I have. I spun up a loop of Holzfforma chain and now she is ready for some test cuts. Hopefully I can get back to get another load of ash yet this week and make a test cut vid. Once I’m satisfied with it, I will be listing this one for sale.

 

[Mastermind]

Did you plug the governor hole in the main nozzle?

 

[farminkarman]

Did you plug the governor hole in the main nozzle?

Yep, I forgot to grab a picture of that part though.

 

[farminkarman]

Yep, I forgot to grab a picture of that part though.

It probably would be worth taking it back off and showing a picture....then again, I think there are some pics floating around here on OPE showing the governor hole getting plugged with epoxy.

 

[Catfishclark89]

Very interested to see this thing run!

 

[farminkarman]

Since it is quick task of taking the carb back off, I’m going to show what @Mastermind called the “governor” fuel feed on the main nozzle. On the bottom of the brass colored main nozzle, there is a small fuel feed hole. In order to have full mixture control on the high-speed circuit, this feed hole needs to be eliminated. You could probably get away with just applying epoxy to the bottom of the nozzle, but I wanted something more permanent. I drove the nozzle out, and carefully soldered the hole shut. If you removed the check valve, you wouldn’t have to worry about it getting hot and ruining it. Unlike some nozzles that have a 360 notch, this one does not. That means you have to make sure you re-install the nozzle in the correct orientation or you won’t get fuel on the high circuit. As others have documented, it might just be better to plan ahead and have a ms361 main nozzle to swap in and be done.

 

[drf256]

The old HDA 120/144 (262XP) nozzles fit. I keep a boneyard of them for when I do the 198 to 87 spec conversions.

 

[whitesnake]

Good job, nice clean work. No doubt she’ll be a runner!

 

[Jusgunn3]

Updates? Thanks for doing this detailed thread, my father in law has one of these and I am trying to convince him to get it ported.

 

[Catfishclark89]

I’m still hanging on the edge of my seat! Not rushing a good thing just excited to see this run

 

[stihl livin]

Are these similar to a dolmar 6100 in size and weight? I’ve never even seen one around these parts. I’m sure Home Depot has them but I rarely go to one.

John they are real great saws with a 044/440 top end on them.

 

[farminkarman]

Updates? Thanks for doing this detailed thread, my father in law has one of these and I am trying to convince him to get it ported.

Well, not sure what happened. I didn't get any notification that posts were added to this thread. So quick update. I took the saw out two weeks ago to finish cutting a load of ash. The saw ran really well for about 10 shorter cuts (like 12" wood). The saw wasn't getting a solid 4-stroke out of the cut after warming up, so I opened the high jet a little. The very next cut I lost my fuel on the high jet....saw starts & idles but will completely die when you open the throttle. I am figuring I fubared the main nozzle, so I ordered a different one. I have been working shifts this week, so hoping to swap the nozzle out this weekend and see if it fixes the issue.

 

[farminkarman]

This morning I pulled the carb and drove out the original nozzle. I replaced it with Walbro P/N: 86-578-1. I fired the saw up and it tuned fine at 13.6K in the shop. Hopefully I can get a log setup and make a video.

 

[Mastermind]

This morning I pulled the carb and drove out the original nozzle. I replaced it with Walbro P/N: 86-578-1. I fired the saw up and it tuned fine at 13.6K in the shop. Hopefully I can get a log setup and make a video.

View attachment 430858View attachment 430859

Thanks for the part number Greg. I ordered 4.

 

[farminkarman]

Alright, I’m happy with how the saw turned out. I’m glad the carb glitch happened before I sold the thing. Here is a couple cuts with it tuned at 13.4K after getting it up to temp.

 

[farminkarman]

Thanks for the part number Greg. I ordered 4.

You're welcome! I'm glad it worked out. I will probably get another one for "next time".

 

[Mastermind]

We did the sweat....and everyone survived.