Recent content by Mike W

The two case mating surfaces looked good with the naked eye. I didn't measure them for flatness. About all I'm able to conclude is the loose fit of one of the crank bearings is the issue.

I hope I’ve found the solution to my problem.

I know the pulse hole lines up, and the gasket is in good shape (inspected during the most recent work). I’ve done so many different things, I’m thinking I have replaced the gasket, but not 100% sure.

I’ve had pretty good luck with aftermarket carbs on small equipment. If the aftermarket carb had runability issues, my troubleshooting mind tells me that the symptoms probably would have changed.

Yes, it does.

On the engine side, my carb only has the one hole for the crankcase pulses. I’d love to be able to fix the issue with such a simple method, but no such luck.

This is a pic I found, it is not the exact BR450 carb, but it is the same style. The pic didn’t come with descriptions, but 14 & 16 are what I was concerned with replacing. Mainly 16, which has the two little flaps that the crankcase pulses cause to pump fuel to the bowl side of the carb. Where...

It appears that the throttle cable only opens the butterfly, and the spring on the carb returns it. Is this o-ring accessible if you remove the butterfly and shaft?

Yes, I replaced the OEM carb with a carb from Amazon (which would have corrected the problem, if it were carb related), then I rebuilt the OEM carb with parts from Amazon, and I rebuilt the OEM carb with parts from the Stihl dealer. The “accelerator plunger o-ring” doesn’t ring a bell, do you...

I installed new bearings and seals on Thursday, let the Dirko cure for a couple of days, and put the blower back together today and ran it. It was running good, but about 1/3 of a tank in, it started losing power again. It's hard to describe, but it is losing power slower than before, and if I...

I think I’m going to purchase new bearings. They do spin freely. One of them came off of the crank while I was checking, but I thought they were pressed on? There is some slight radial slop in both, but of course I don’t have fresh bearings to compare with. For the cost involved, I think I’ll...

Got it broke down today, the seals should arrive on Monday.

I couldn't feel any play in the crankshaft bearings, so I have a set of crankshaft seals and a tube of Dirko on order. Wish me luck.

The blower has continued with the intermittent issue of seemingly starving for fuel at throttle. This weekend I installed a Stihl OEM tank vent. Also, the only section of the fuel line I haven't replaced is the piece inside the tank, which appears to a be sold with the white plastic piece that...

Thanks for the last couple of replies. I have replaced the coil and plug. There was nothing wrong with the original coil. I am convinced the issue is not ignition related. Earlier, I mis-spoke about the fuel/oil ratio. I have only ran 50:1 ratio. I used to have a Lawn Boy mower that was 32:1...