20 Most Recent Mtd 25B-520D200 CA Gas Lawn Edger Questions & Answers

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If you think it's a fuel problem that's effecting the machine, try momentarily applying half to full choke while opening the throttle. If this improves running you do then have a fuel problem. If so it might be caused by either the small gauze mesh filter that screens fuel flowing (internally) from the 'pump' side of the carburetor to the 'metering' side. The problem could also be the filter on the end of the pickup line that goes into the fuel tank. Or if the machine is a little old, it could be that the metering and pump diaphragms (both internal to the carb.) may have become stiff. A tip too is not to use fuel that contains ethyl alcohol as an additive. John, I'm not familiar with your machine, but as many small 2 cycle engines have similar fuel systems I'm hoping this helps.

This is a 4 Cycle engine. You do not mix gas with oil. But must make sure that you do have engine oil in crankcase before running engine to prevent damage.

50:1

Clean or replace carburetor, or clean exhaust side of cylinder behind muffler.

Check and clean carburetor, and exhaust side of cylinder behind the muffler.

Try removing the spark plug and squirting some carb cleaner or starting fluid in the cylinder. Pull the starter cord several times for the piston to drive out the oil. Clean the plug and replace it. Try to start as normal. If you have starting fluid squirt a shot in the air cleaner to help make it easier to start the first time.

I have an old model Lawn Keeper gas edger with a 2HP Briggs and Stratton engine. It uses a 30" fan belt to drive the cutting blade and both pulleys have an alllen head set screw holding the pulleys to the shafts. The pulleys are cast aluminum and the set screw and shafts are steel so I find need penetrating oil and heat to loosen the set screw in order to push the drive pulley further on the shaft to make room to replace the drive belt.

the fastest way to change the oil is to tip it on its side and drain nit threw the dip stick hole run it out of gas first if possible

This is related to the diaphragm between the tank and the carburetor part number 495770 you can purchase from a shop like www.arcolawn.com and replace it very easily.
Best wishes
Joe