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I run the D025 mount bars on my CS600P with the use of two hex 8MM x 1.25 nuts that I drill out to fit the Echo studs and minor filing to the two flats of the nut. The oil hole lines up fine and I haven't had any issues with bar oiling. I've found much better deals on the Stihl D025 by Oregon...

I've used Jasco Epoxy Paint Stripper for all of my saw restorations with good results. Make sure you use gloves and apply with a paint brush and keep it saturated until you see the paint bubbling. I use a small stainless steel brush to remove the paint and then flush with soapy water. I've...

I did a write-up on 6/4/2015 about rebuilding my MS391 which had Fag (Made in France) main bearings with plastic retainers. The retainers failed and spit the balls into the crankcase. The replacement Stihl bearings are still the crappy plastic retainer type and cost $40/each. These are...

You can get the Walbro PN 86-578-1 high speed jet on Amazon for $5.99/free shipping which will give you full adjustment on the Walbro HDA-268 carburetor. I attempted the fix the rich high speed jet of the HDA-268 carburetor on my CS600P, which I couldn't lean out when I moved from an altitude...

I wanted to update my experience with trying to replace the main nozzle on a Walbro HDA-268 carburetor on my Echo Cs600P with an 86-578-1 nozzle. I ended up moving to Utah at an altitude of close to 5,000 feet so I needed to do the nozzle swap due to the inability to compensate for a very rich...

I have a CS600P which I have adapted to use a Stihl D025 mount for a 16" bar (60DL, .050" gauge, 3/8" pitch) by filing the opposite sides of 8MM thread (13MM hex) of two nuts to allow the bar to fit the D176 Echo mount. Fortunately, the oil holes line up. I also have adapted the Husqvarna K095...

I've worked on several of these McCulloch saws with the vacuum operated pulsating oilers and all would leak the chain oil into the engine. Some would only do it when sitting overnight, to the point where the engine would get hydrolocked with the bar oil and I had to remove the spark plug to...

I use a 16" Forester brand bar with 3/8" full chisel chain, .050" gauge, 60 drivers with the Stihl D025 mount on my Echo CS600P which has the D176 mount. You'll need to use a mount adapter but I just filled down two sides (opposite) of 8MM x 1.25" hex nuts and they worked fine to hold the bar...

It's item No. 17 in the second illustration. It's called an Air Guide and attaches to the crankcase below the intake. It looks like from your first picture the right side of the guide has broken off. Partstree shows this as PN E106000020 for $2.75.

When I can't get the puller to work, I go to the "knocker" method. Make sure you thread on the nut a few turns to protect the end threads of the crankshaft (I sometimes use a sacrificial nut) and then you must insert a tapered steel wedge (I use a large flat bladed screwdriver) between the...

I rebuilt a MS391 which did the very same thing. The factory FAG bearings with the plastic ball retainers failed and spilled some of the balls into the crankcase. Fortunately, it didn't trash the topend. Mine made a rattle sound when shaken.

I rebuilt one of these a year ago which had a hole in the piston due to old stale gas (low octane). The factory installed Zama C1Q-S296 carburetor which comes on this saw is about the worst I've seen with respect to restricting adjustment of the low and high speed jets. They are both encased...

I just got done with this repair and now I don't have any spark. I think the coil is bad and it's only showing 2k Ohms when I think it should be higher at about 8k Ohms. I wanted to know if the coil for the points 056 ignition will work if I solder it in. It looks like the physical dimensions...

I tried to use Oregon's website a week ago and was pissed about the useless new search feature was. I ended up sending an email to Blount about my dissatisfaction. There may be help in the future, as I received an email response the same day from Ms. Tammy Kelly of Blount saying they were...

I’ve dealt with this problem in my CS600P running rich after a muffler mod when the high speed jet was fully closed. Welcome to the world of “semi-fixed jet” carbs like the Walbro HDA-268, which is on the CS590s and CS600P chainsaws. I was going crazy trying get the saw to lean out in the cut...

Thanks for the clarification. I was thinking of a main jet instead of the nozzle/check valve assembly. Please ignore the part Nos. I provided in my previous posting, as they were for a main jet which isn't applicable to this series of carb. The correct PN for the nozzle/check valve from...

Thanks for your help. I will go with the HDA-191 jet but I have another idea, assuming the goal is to block or close this hole in the jet. Since the current HDA-268 jet has a .58 mm opening which equates to .022835 inches, I could use a 0-80 2A screw with a maximum minor diameter of .0442...

I just happened to see this posting after I've been having problems tuning my CS600P with the Walbro HDA-268 carb after a muffler mod. It's way too rich even with the high speed jet seated and has less power than without the muffler mod, which is a little disappointing. I was able to locate...

I just went through the same problem with my MS361 with a Walbro HD34A carb. I put in a K10-HD kit and it didn't help. It would run good for a little bit and then not start and I'd have to tune it all over again. I thought I had an air leak as the saw would run away and then quit but a...

I've worked on a couple of these Mac 3200 series saws and one had a broken bar stud. You're not going to like this but to replace those studs the saw practically has to be completely disassembled to get at it. The bar stud is a square end which has to be driven out from the clutch cover side...