Skunkdynamite
ArboristSite Lurker
Greetings fellow chainsaw enthusiasts,
I've been pouring over the information here for a few years since I bought my Ms291. Thanks for all the great information and advice on here! I haven't posted till now, I'm in a bit of a pickle...
I originally bought it for dropping and processing smaller trees on my property and bucking up loads of log length firewood.
I've ran it for 4 years, usually a long day here and there, not every day but lots of big red oak or whatever they're delivering.
This past March I either had a bad batch of fuel or ran it lean somehow and it wiped out the cylinder and piston.... It happens
Going by reviews/threads I bought an aftermarket piston and lightly honed the cylinder.
Got her broken in nice and easy, on the 4th tank of gas the circlip holding the wrist pin broke and lunched the cylinder wall and rings... (**** shouldn't happen!) Now it was a Science project.
(I already Bought another aftermarket piston figuring I made a mistake)
So I rebuild it this time porting the exhaust port to match the gasket and putting some extra flow "gills" on the muffler.
Also bumped the mix up to 40:1 and ran it slightly rich to cover my bases.
If anything else I'm amazed at the power I got with just a few minutes on the die grinder!
Broke in nice and easy, 3 tanks of gas... Then I got about a gallon of fuel through it and it Died mid cut. No obvious loss of compression, plug isn't fouled, good spark P&C look fine through the spark plug hole and exhaust port.
I really don't have time to tinker with it, I'm thinking of just putting it on the back burner and buying a used 261 or another 291.
OK... I'll get to the point
I found a lot of good things said about the 261, is it better off to mod and is it more rebuildable than the 291? I really expected a longer life out of a farm grade saw, but I can't blame the equipment. Power seems to be comparible between the two. I'm going to miss that short love affair with the modified 291 though.
I've been pouring over the information here for a few years since I bought my Ms291. Thanks for all the great information and advice on here! I haven't posted till now, I'm in a bit of a pickle...
I originally bought it for dropping and processing smaller trees on my property and bucking up loads of log length firewood.
I've ran it for 4 years, usually a long day here and there, not every day but lots of big red oak or whatever they're delivering.
This past March I either had a bad batch of fuel or ran it lean somehow and it wiped out the cylinder and piston.... It happens
Going by reviews/threads I bought an aftermarket piston and lightly honed the cylinder.
Got her broken in nice and easy, on the 4th tank of gas the circlip holding the wrist pin broke and lunched the cylinder wall and rings... (**** shouldn't happen!) Now it was a Science project.
(I already Bought another aftermarket piston figuring I made a mistake)
So I rebuild it this time porting the exhaust port to match the gasket and putting some extra flow "gills" on the muffler.
Also bumped the mix up to 40:1 and ran it slightly rich to cover my bases.
If anything else I'm amazed at the power I got with just a few minutes on the die grinder!
Broke in nice and easy, 3 tanks of gas... Then I got about a gallon of fuel through it and it Died mid cut. No obvious loss of compression, plug isn't fouled, good spark P&C look fine through the spark plug hole and exhaust port.
I really don't have time to tinker with it, I'm thinking of just putting it on the back burner and buying a used 261 or another 291.
OK... I'll get to the point
I found a lot of good things said about the 261, is it better off to mod and is it more rebuildable than the 291? I really expected a longer life out of a farm grade saw, but I can't blame the equipment. Power seems to be comparible between the two. I'm going to miss that short love affair with the modified 291 though.
You are correct, use nice parts and build a nice saw. Junk makes a junk saw. Just rebuilt 3-372's for a logger friend (one he crushed flywheel side), just cannot seem to get away from it. Hope your builds and life are going great.
