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Don't you mean old coots with antique 036s?

The needle seat could be worn on the 200 carb. Pressure testing in a glass of water will determine, or just a pressure test to see if it is leaking in the first place. It should hold 10 psi. It takes only a couple minutes to remove the carb on the 020 or 200, why a shop that can't solve the...

Wonder what happens when the magnets actually touch and the saw still runs. Firing out of sync?

Apparently. When it wouldn't rev it made a weird popping ignition sound. Considering it now, like the fuel building up but not firing during every cycle. Possibly the sound a tip off for such a malady?

I sealed the carb welch plug and it didn't solve the saw not wanting to rev properly problem. I took off the starter cover to look at the impulse line again :|:, rotated the flywheel and there was a little ticking sound as it went around. It turned out the magnet gap was non-existent, the...

Fiona, Loctite makes many products, so you need one specifically designed for bonding plastics. I think that Epoxy will generally have good resistance to gasoline.

Good info. The stuff I used was red. Hopefully it hardened in the gap even though the puddle remained soft.

I tried to look it up, but the official description didn't say anything about aerobic or anaerobic, and also nothing about resistance to gas. I think the stuff I used is more purposely a thread lock than a gap sealant. The strongest of the three types my local home center sells. The package...

Reading around in the forums about carb sealant, some folks claim good results with the nail polish, some say the gas degrades it. Could be the additives as Magnus alludes to. I tried some Locktite sealant around the plug, the larger one as shown in Al's photo. They have a number of...

Thanks, appreciate the help.

Al, what is your method for using the Loctite around the welch plug? Do you try and just run a bead around the edge and have it sink in, or are you referring to installing a new plug with sealant on it? Quite a large plug on the carb I have. Thanks.

Thanks Kevin, for the kindly offer! I'm going to try Al's fix it method today, see where it gets me. Either way I will send you a pm.

Some of the carbs that will work on the 020 and the 200 don't have the accelerator pump, is my understanding. They have phased out some of the carb models, so possibly without the pump is no longer available unless old stock. I did work on a 020 that had a Walbro carb, and it ran very well...

No, but I will though. Thanks, Al. It starts and idles fine, and will run well, then suddenly starts making a weird popping sound and the revs won't go up. I think the heat expands something and then there is a leak. Your idea could have merit in this case it seems. Just the carb I want to...

Anyone recently purchase a new carb for a MS200? I'm looking for a Zama CQ1 s126, the one Brian mentioned in this thread a few years ago. I need it for a rear handled 020, but I believe both the MS 200 rear handle and the top handle, and the 020 rear and top, all use the same carb. It doesn't...

I used to always use rope to jam up the piston, then I started modifying engines and needed to find the timing, which requires knowing top dead center. I took a round plug of wood that was soft enough to thread it's way through the plug hole, and it became my piston stop ever since. Just buy...