I'm leaving mine stock. Not even a MM. It's strong enough for my use. I like that it's quiet. I've done plenty of tuning on two stroke motorcycles. Unless there's a specific issue that needs correcting I'm leaving my saws stock or lightly modded.
MS241cm mods
- Thread starter Matt Hogden
- Start date
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Thin the key on the flywheel to advance the ignition. Heat and pre-detonation have not shown to be an issue.
How far did you go?
Frank Rizzo
Custom Saw Modification 241c-441c,660 specialist
Hi Matt ! There’s a guy on utube that really has these saws dialed in ... I believe the port-work was done by Hotsaws101 and then “tweeked” a bit by the owner ... Really has the saw ripping thru the timber like nobody’s business ... I’ll see if I can find a link
Frank Rizzo
Custom Saw Modification 241c-441c,660 specialist
Matt Hogden
ArboristSite Guru
Matt Hogden
ArboristSite Guru
Yeah that one hammers. I soooooooo want a "Worked" 241
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Frank Rizzo
Custom Saw Modification 241c-441c,660 specialist
You’re welcome mate
Here’s mine port work done by TreeMonkey. Absolute blast to run.
Overkill338
M-Tronicly Obsessed
I finally got an 18" Picco bar for my 241, and I'm loving it. It was cutting good with the 18" 325 and a 7 pin sprocket. Now. It's cutting fantastic with the PM chain and 7 pin sprocket on the new 18" bar.
Interesting to note, the 18" Picco bar (3005 000 4817) is around 3/4" longer than the 18" 325 bar (3005 000 4717). Also, this time I had no choice but remove the rim and put it inside the chain, and installed the sprocket, bar and chain as one unit. It was so tight it didn't want to spin well. I cranked the oiler up, ran it for about 30 seconds, to get the chain hot. After I shut it off, I tentioned the chain up tight and let it cool off. Then reset tension and now everything is great. You can see how close the bar was to the sprocket.
Interesting to note, the 18" Picco bar (3005 000 4817) is around 3/4" longer than the 18" 325 bar (3005 000 4717). Also, this time I had no choice but remove the rim and put it inside the chain, and installed the sprocket, bar and chain as one unit. It was so tight it didn't want to spin well. I cranked the oiler up, ran it for about 30 seconds, to get the chain hot. After I shut it off, I tentioned the chain up tight and let it cool off. Then reset tension and now everything is great. You can see how close the bar was to the sprocket.
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Ryan'smilling
Addicted to ArboristSite
Just so you know, that can put a lot of stress on the crank bearings to tighten up the chain while it's hot and let it cool that way. I've seen it specifically warned against in the manual (can't remember which saw, 361 maybe). Obviously what's done is done, but I wouldn't make a habit of it. Generally if I've had to adjust the tension while the chain is warm, I try to remember to back it off after cutting.
Frank Rizzo
Custom Saw Modification 241c-441c,660 specialist
Yeppers ... add a link
Ryan'smilling
Addicted to ArboristSite
Or spend a minute making a little clearance with a file on the tail of the bar.
Overkill338
M-Tronicly Obsessed
The tail of the bar isn't what the problem was. I should have gotten a 62 DL chain. The tensioner was bottomed out.
Ryan, I wasn't thinking about the crank bearings. Now I regret it, but like you said, what's done is done.
Ryan'smilling
Addicted to ArboristSite
You can also use a round file to open up the adjuster hole a little. Obviously you don't want to make it so it doesn't work with the other chains or sprockets, but it's another trick to keep up your sleeve.
Overkill338
M-Tronicly Obsessed
I'm going to pull it back apart. I think the tail of the bar may be rubbing on the raised part of the drum. I checked it again and it does make a hollow grinding noise when you spin it by hand. I'm going to use my 7 tooth spur and see how it works out. The issue started when I switched to the rim.
Overkill338
M-Tronicly Obsessed
I used your file trick and opened up the adjuster hole to take some pressure off. Also, I switched to my 7 pin spur and it gave a little more space too. Spins easy now!
By the way, in the UK a 241 can be had with an 18" bar, and they are all .325. So I guess when I was running an 18/325/063 wasn't so strange after all.
The rim sprocket was an 8-pin?
Overkill338
M-Tronicly Obsessed
No, and it makes zero sense to me. The 7 pin rim seems to take up more space than the 7 tooth spur. Maybe it's an optical illusion, I didn't have time to mess with it very long.
