Mudfly Posted March 27, 2022 Share Posted March 27, 2022 The old 044 wasn’t pulling like it should anymore so I pulled the muffler and didn’t like what I saw. well 20 minutes later and I’ve got the jug off. looks like I’m rebuilding another one. Going to try to clean up the jug on this one as these are NLA from Stihl and the aftermarket ones aren’t near as good. Found an NOS piston, rings, and piston pin. Also going with new intake boot, impulse line and crank shaft seals. hoping that gets this one back to running well again. It’s no beauty queen, but might as well have it running right. I bought this awhile ago as an impulse and don’t have more than a few tanks thru it myself. Someone had the carb tune way off and now I know why. I picked it up cheap for a good runner, but I will have a bit more into it now. No more impulse buys….. until the next one comes along. 4 1 Quote Link to comment Share on other sites More sharing options...
Mudfly Posted March 28, 2022 Author Share Posted March 28, 2022 Here are a couple of before pics. Nothing special. Just like my saws running correctly. 3 Quote Link to comment Share on other sites More sharing options...
vtfireman85 Posted March 28, 2022 Share Posted March 28, 2022 Awesome saw! Quote Link to comment Share on other sites More sharing options...
Frank H Posted March 28, 2022 Share Posted March 28, 2022 Nice size saw. Not too heavy but good power. It'll be great once you rebuild it. At least then you know what you have. Quote Link to comment Share on other sites More sharing options...
Mudfly Posted March 28, 2022 Author Share Posted March 28, 2022 22 minutes ago, vtfireman85 said: Awesome saw! Well it should have been a awesome saw. Hopefully it will be when I’m done. I thought it ran a little stronger in the video the guy used when he sold it. Took me a tank to get it close to in tune, and then it never really cut right since I have had it. Lesson learned. I would hate to screw up the jug more than it is. Going to be a few hours of hand work to clean off the transfer as it is, but if I destroy it, maybe a good platform to try my hand a porting an aftermarket cylinder. 2 Quote Link to comment Share on other sites More sharing options...
vtfireman85 Posted March 28, 2022 Share Posted March 28, 2022 44 minutes ago, Mudfly said: Well it should have been a awesome saw. Hopefully it will be when I’m done. I thought it ran a little stronger in the video the guy used when he sold it. Took me a tank to get it close to in tune, and then it never really cut right since I have had it. Lesson learned. I would hate to screw up the jug more than it is. Going to be a few hours of hand work to clean off the transfer as it is, but if I destroy it, maybe a good platform to try my hand a porting an aftermarket cylinder. Keep us posted, i have an 042AV downstairs just waiting for me to go through. I want to start with new seals and new rubber parts at least. Do you think then crank seals went in yours? Bad carb boot? Overheated? Quote Link to comment Share on other sites More sharing options...
Mudfly Posted March 28, 2022 Author Share Posted March 28, 2022 1 hour ago, vtfireman85 said: Keep us posted, i have an 042AV downstairs just waiting for me to go through. I want to start with new seals and new rubber parts at least. Do you think then crank seals went in yours? Bad carb boot? Overheated? Carb boot looks amazing now that I have it pulled. Impulse line looks ok actually, but the ends might be a little loose fitting. Fuel line looks good too for I’m guessing 30 years old. The flywheel side looks ok after I got that off tonight. The PTO or clutch side is ridiculously dirty. I couldn’t even see the oil pump after I pulled the clutch off. Have it soaking in some degreaser. If that is clutch dust I’m wondering if someone overheated it or maybe that seal is bad? I will hopefully finish stripping it tomorrow night. Start cleaning and waiting on parts. 2 Quote Link to comment Share on other sites More sharing options...
Mudfly Posted March 28, 2022 Author Share Posted March 28, 2022 Here is a pic of the oil pump this morning after soaking for a night. The black stuff is like tar. I wonder if they used, used engine instead of bar oil? 1 Quote Link to comment Share on other sites More sharing options...
snoshoe Posted March 28, 2022 Share Posted March 28, 2022 1 hour ago, Mudfly said: Here is a pic of the oil pump this morning after soaking for a night. The black stuff is like tar. I wonder if they used, used engine instead of bar oil? Suspect that seal is leaking. Quote Link to comment Share on other sites More sharing options...
Mudfly Posted March 28, 2022 Author Share Posted March 28, 2022 24 minutes ago, snoshoe said: Suspect that seal is leaking. I don't disagree. I was planning on putting new in anyway. Quote Link to comment Share on other sites More sharing options...
Mudfly Posted March 29, 2022 Author Share Posted March 29, 2022 The clutch side seal doesn’t look too bad once I cleaned it off. Definitely looks original and will be changed. The bearing is in great shape. No play at all. I wish I had the jig to split the cases. It would great a whole lot easier at this point to clean if it was split. 3 Quote Link to comment Share on other sites More sharing options...
Mudfly Posted April 3, 2022 Author Share Posted April 3, 2022 Update: waiting for a few parts to come in. Got it stripped down as far as I can and about as clean as I can get it. The flywheel side is pretty clean, the clutch side is still pretty bad, but it’s good enough. NOS piston, pin, and needle bearing. OEM impulse, fuel, intake boot, and base gasket. Waiting on crank seals. Going to attempt to remove the aluminum transfer from the cylinder in the next couple of days. going to pressure and vac test the long block to make sure it’s not leaking before I re-assemble the whole thing. haven’t decided if I’m going to rebuild the carb or not yet. 2 Quote Link to comment Share on other sites More sharing options...
Rawleigh99 Posted April 4, 2022 Share Posted April 4, 2022 If your wife is away for a little while stick it in the dishwasher on Pots and Pans with dish soap. (Hint: Run the dishwasher through another cycle empty with soap before she gets home!) When I rebuilt one I used a pocket knife to remove the aluminum and the ball honed the cylinder. It cleaned up good. Quote Link to comment Share on other sites More sharing options...
Mudfly Posted April 4, 2022 Author Share Posted April 4, 2022 1 hour ago, Rawleigh99 said: If your wife is away for a little while stick it in the dishwasher on Pots and Pans with dish soap. (Hint: Run the dishwasher through another cycle empty with soap before she gets home!) When I rebuilt one I used a pocket knife to remove the aluminum and the ball honed the cylinder. It cleaned up good. I do most of the cooking and dishes here. No chainsaws in the dishwasher! 😜 While I agree with the idea, the dishwasher isn't taking this stuff off. I soaked it in degreaser, tried carb cleaner, scraped, soaked in HOT water, scraped, rinsed in hot water, scraped more. I think steam would probably take it off, but its clean enough. It will only get dirty again anyway. Quote Link to comment Share on other sites More sharing options...
int 504 Posted April 4, 2022 Share Posted April 4, 2022 I recently did a clutch on a 575 XP that looked about the same. Got it clean enough and called it good. Quote Link to comment Share on other sites More sharing options...
vtfireman85 Posted April 4, 2022 Share Posted April 4, 2022 5 hours ago, Mudfly said: I do most of the cooking and dishes here. No chainsaws in the dishwasher! 😜 While I agree with the idea, the dishwasher isn't taking this stuff off. I soaked it in degreaser, tried carb cleaner, scraped, soaked in HOT water, scraped, rinsed in hot water, scraped more. I think steam would probably take it off, but its clean enough. It will only get dirty again anyway. You need an ultrasonic. Quote Link to comment Share on other sites More sharing options...
Mudfly Posted April 4, 2022 Author Share Posted April 4, 2022 10 minutes ago, vtfireman85 said: You need an ultrasonic. If I was restoring, maybe. Or if I did this for others. But this is a working saw. No need to be perfectly clean. Needs to be clean enough to get things sealed properly. Quote Link to comment Share on other sites More sharing options...
vtfireman85 Posted April 5, 2022 Share Posted April 5, 2022 54 minutes ago, Mudfly said: If I was restoring, maybe. Or if I did this for others. But this is a working saw. No need to be perfectly clean. Needs to be clean enough to get things sealed properly. Its one of those things, once you have it, you don’t know how you ever lived without it. Mine is a 3L, iirc a 6 was a bit more, like 180 vs 230 or something everything goes in there, guns, greasy parts, bearings, carburetors, jewelry, I couldn’t live without it. When I bought it I figured it cost what 2 gallons of carb soak cost. It has paid for itself many times over in chemical savings, and I don’t have to expose myself to them or figure out how to dispose of them. Quote Link to comment Share on other sites More sharing options...
Mudfly Posted April 5, 2022 Author Share Posted April 5, 2022 14 hours ago, vtfireman85 said: Its one of those things, once you have it, you don’t know how you ever lived without it. Mine is a 3L, iirc a 6 was a bit more, like 180 vs 230 or something everything goes in there, guns, greasy parts, bearings, carburetors, jewelry, I couldn’t live without it. When I bought it I figured it cost what 2 gallons of carb soak cost. It has paid for itself many times over in chemical savings, and I don’t have to expose myself to them or figure out how to dispose of them. For future reference, any brand recommendations on the ultrasonic cleaner? I doubt I will be investing in the near future, but possibly a couple years out. Quote Link to comment Share on other sites More sharing options...
vtfireman85 Posted April 5, 2022 Share Posted April 5, 2022 48 minutes ago, Mudfly said: For future reference, any brand recommendations on the ultrasonic cleaner? I doubt I will be investing in the near future, but possibly a couple years out. Idk, mine came from Amazon, name sounds like a drawer full of silverware being thrown down the stairs. Seems to work well. You have to watch it because the timer only controls the ultrasonic part not the heater part, so it could sit there and cool the liquid out if you forget it. looks like this Quote Link to comment Share on other sites More sharing options...
Mudfly Posted April 28, 2022 Author Share Posted April 28, 2022 (edited) UPDATE: This one is giving me some fits. Parts have been a bit of an issue, but have everything now. The piston and cylinder and in along with the crank seals. Having some trouble getting it to pass pressure test. Holds vac fine for 10 minutes. These have what the call a oil pump bushing on the clutch side. The ID of the seal on that side seal to the OD of this bushing. But the bushing is just a slip fit to the crankshaft. I'm getting a slight leak from the annular space between the bushing and the crankshaft. I'm trying to figure out exactly how that side is supposed to seal. Once I get that figured out, I have an hour or two of assembly and then this one should be good to go also. Pictures of the PTO side seal. Edited April 28, 2022 by Mudfly Typo Quote Link to comment Share on other sites More sharing options...
vtfireman85 Posted April 28, 2022 Share Posted April 28, 2022 Is it just machined wrong? I assume the bushing rides with the crankshaft? Perhaps some bearing retainer? Quote Link to comment Share on other sites More sharing options...
Mudfly Posted April 28, 2022 Author Share Posted April 28, 2022 6 minutes ago, vtfireman85 said: Is it just machined wrong? I assume the bushing rides with the crankshaft? Perhaps some bearing retainer? On another forum trying to figure it out. If the bushing is supposed to spin with the crank, then I'll put some motoseal in there and call it good. Just seams weird to me that it doesn't seal to the crank. Quote Link to comment Share on other sites More sharing options...
vtfireman85 Posted April 28, 2022 Share Posted April 28, 2022 Just now, Mudfly said: On another forum trying to figure it out. If the bushing is supposed to spin with the crank, then I'll put some motoseal in there and call it good. Just seams weird to me that it doesn't seal to the crank. Give it a light tap with a hammer , itl fit tighter 😉 Quote Link to comment Share on other sites More sharing options...
Mudfly Posted April 28, 2022 Author Share Posted April 28, 2022 1 hour ago, vtfireman85 said: Give it a light tap with a hammer , itl fit tighter 😉 So per the other forum, when the clutch goes on it presses the bushing in tight to the crank. They confirmed to either use grease or sealant on the bushing and it should be good to go. Learning new things all the time. 1 Quote Link to comment Share on other sites More sharing options...
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