ECHO Echo, Echo, Echo

[FergusonTO35]

The saws are kept in my garage which is always 40-50 F in the winter. They had been in the back of my truck for about 40 minutes when I went to use them.

 

[EFSM]

The saws are kept in my garage which is always 40-50 F in the winter. They had been in the back of my truck for about 40 minutes when I went to use them.

Last winter there was a discussion going on how much carburetors need adjusted summer vs winter. I knew there was a significant weather change coming up so I checked the RPM’s on a saw when it was in the 70’s and then a couple days later when it was in the 20s. There was no measurable difference in how it ran, but I don’t remember what fuel that was (likely winter blend).

 

[FergusonTO35]

I *never* get easy fixes like needing fresh fuel, so in all likelihood both saws need carb kits.

 

[Woodtroll]

A couple of curiosity questions about a 4910 I recently acquired in the Home Depot closeout sale:

Is there a better fuel cap available for it than the one that requires a screwdriver blade to loosen it, hopefully one with two studs like the oil cap uses? I'm hoping something off another saw might have the same threads, as it appears the oil and fuel caps on this saw are not the same thread/size?

Why in the world did Echo decide to use a nut to hold the sprocket and clutch drum on, on this particular saw? None of the Echoes I have, from older to newer, use anything other than an E-clip in this application - except the 4910.

Thanks!