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Running more oil without a retune will run leaner, so it should burn cleaner, but hotter, which could bake oil on, but no soot from incomplete burning of gas. 271T

It's hard to beat new out of the box Stihl RS (Rapid Super). Sometimes I wish it wasn't so aggressive out of the box. It's hard to recreate how they come with a file too, so enjoy the new chains while they last.

Have you dynoed a blue 9010?

I had a friend put bar oil in the gas tank. I dumped it out, and put fresh gas in, and had to run it on choke for about a minute or so. I retuned the carb once it started running better, then retuned it after a couple tanks of gas, and it runs fine now. So, just keep running it. The nice thing...

Today's splitting

I did that once at a GTG with my chinese 660 and heard a metallic ping. It still runs good, but when it happened it brought to mind someone saying a 066, I think it was, can break the shaft slamming into wood at full throttle. The flywheel torques too hard on the shaft.

Don't worry, I'll be using my stock base gasket. Yes, porting can be a lot cheaper if there's no machine work involved: less time & tooling. Compression doesn't have to be higher with a base and squish cut. Some of the performance gain is in the size of the squish and squish band.

I cut this 395 squish band tonight.

That's what I do to some of mine and sort of what I did to the 352. I like to widen and blend upward that intake side corner. Echo 620p and 590 I ported, cutting dryish Ash. The barkless log was 2 year old really dry Ash, you could see the chain starting to dull after 3 cuts when looking at the...

I did just a little, but that was what I could do with a diamond burr as I haven't found any 1.6mm carbide burrs of the shape I want, and those uppers are very small.

And consider how many people are actually injured by what they are cutting: tree falling on them, or limb whipping them or pushing the saw into them when it springs back if under tension. All avoidable with education and carefully assessing the situation. It isn't the saw's fault in such cases.

Inertial brakes activate when the saw moves suddenly due to kickback. Your wrist doesn't have to touch the guard and your grip will not affect the brake unless you hold onto the saw well enough to prevent it from rotating in a kickback scenario. I've had a beginner saw (poulan 3816) activate the...

How is one supposed to know where max and min is if there's no stop to the output adjuster rotation? Is something missing? I've never seen that version of oil pump in person.

Stupid me was looking at kW. I thought I double & triple checked which number I was looking at. It is 3.1hp

A lot of us do this stuff for a living in some way or another, and with much discussion with other knowledgeable people, we each have acquired much information regarding all aspects of chainsaws. Echo is worth a look: cs-490 and cs400 if you don't get a ms241. I just checked the specs on a 241...

I went back and looked at that first cyl I ever ported (vostore 026) and I think it is a different cylinder than what you have. I did hog the lowers on it. You might try it both ways, one with JB, then again hogged out toward the exhaust side and base only, so you know what works best on the OEM...

I'm in TN. You could try asking local tree removal companies if they could drop off good firewood logs at your place, that's what a lot of people try to do around here. Sometimes you get lucky and get a nice load of high quality logs. Otherwise people around here look on craigslist for free wood...

I have some highly valuable black walnut.

I had a 2188 (390xp) It had a 3 position output adjuster with a stop at both extremes. All the way in was good for limbing, middle I used for the 20" bar, all the way out did ok for a 32". I modified it so that all the way in was good enough for a 20", middle for 32" about 1:1 gas/oil, and high...