New Briggs & Stratton lawn mower engine never needs an oil change
txtom50
9 years ago
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krnuttle
9 years agoUser
9 years agoRelated Discussions
Honda Lawn Mower Engine Oil
Comments (12)IMHO changing the oil on an hour basis regardless of how it "looks" is important. The OEM does not come up with these hourly change numbers by using a dartboard. Keep in mind with 20/20 vision you cannot see particles less than 40um (contrasting no less) without magnification. Even on units with an oil filter, they are rated at 20 or 25um and particles less than that size cruise through the filter unless they get hung up as the filter clogs. Worse, oddly shaped particles say 15um wide, and 35um long (like a spear) can pass through a 25-20um filter. Changing the oil (when warm after the particles have been stirred up into suspension) is the only way to rid the engine of them other than flushing the case. These small particles crash into parts and make more small particles, or some larger ones too, and the cycle only ends the day the engine stops running for good. Keeping the oil changed at the recommended interval rids the case of the majority of the particle population so you have fewer projectiles in there with fresh oil. In hydraulic systems we deal with this another way as it would be impractical to drain a 1,500 gallon industrial reservoir on a regular basis. The use of 10um, 5um, or 2um filters (incidentally a 10um filter would remove all the red blood cells in your blood, and a 5um would strip the white cells out leaving you only with plasma, so these are FINE filters and not the one on a Briggs engine.) and occasional external purification by use of a purifier unit keeps the oil dry (water removal) and clean. Since it would be impractical for the average homeowner to own an oil purification unit (the good ones start at $22k) and reprocess the used oil with new additives, changing it regularly is the best line of defense. After a season (25 hours) I am sure there is more than 300ppm of water in the oil, not to mention gas too....See MoreCraftsman Lawn Mower - Briggs Stratton Will Not Start
Comments (4)They should change the name to crapman. Sears doesn't give a rats behind, they already have your money. Mine is 10 months old, won't start for anything. Yours is less than 2 years old and has problems. Whatever happened to having pride in your product....See More20hp Briggs and Stratton burning oil, need advice
Comments (14)My experience with V-type engines has always been that one bank or head will fail before the other. Having said that, I will further state that I don't know if any of these Briggs V engines have a tendency for one particular bank to fail before, or more often than, the opposite bank. I do know that there are a number of things that can lead to head gasket failure, but "pin-pointing" a cause on these engines is hard to do and usually it is just better to make sure you perform the repairs carefully and correctly than to fret over what might have caused the initial failure. The one thing I would definitely check would be to remove the sheet metal shrouding (aka "fan ductwork) and clean out any accumulation of cutting debris or mouse nests. Other than that, proper torquing of the head bolts is about the most critical detail in the repair. Try to clean the old gasket "footprints" from the head and block using carburetor cleaner and a very fine, hand held "scotch brite" pad. Make your cleaning strokes (with the pad) follow the "long side" of the gasket outline. This means: Scuff/clean so all the micro scratches made by the scuff pad "run with" the gasket outline instead of "across" it. The benefit of doing this is: The scuff cleaning creates very tiny scratches in the metal surfaces of the head and block. If you scuff ACROSS the outline of the gasket, it has the "effect" of "digging a drainage ditch" or "plowing an escape route" for combustion gasses to travel through. If you scuff clean keeping your strokes in the same long direction of the gasket shape, you realize a benefit (instead of creating a potential problem). With the micro-scratches running "with the gasket", you create a multitude of "teeth" in the metal surfaces that "bite into" the "clear coat sealer" on the new gasket. This helps to secure the gasket better than having it just pressed against the head and block. If the gasket is "held better", it is not as likely to leak. Clean the surfaces with spray carb cleaner after scuff cleaning and blow dry with compressed air or simply let it dry "naturally". DO NOT clean the new gasket using carb cleaner or any other powerful solvent. Doing so could remove or damage the thin, "shellac like" coating that is on the new gasket. Whether you want to replace both gaskets at this time is a decision for you to make. If you decide to only replace the gasket you find to be leaking, you should at least check the torque of the head bolts on the other cylinder. DO NOT be tempted to "over-torque" the bolts. Too much torque on fasteners will distort both the head and the crankcase which will mean the gasket IS NOT "clamped down" evenly and will fail again soon. You will need to check and adjust the valves on each cylinder that you replace the head gasket on. Possibly Walt Conner or some of the other bona fide Briggs pros will offer comments about the failure rates of these engines and whether it is common to "go after both banks" at the same time or simply address the issue upon failure. In the automotive field, we usually replace head gaskets in pairs on V type engines, except in cases of failure while still under factory warranty. In warranty cases, the OEM dictates what you do. Sometimes they say "only the head gasket that failed". Other times they say "replace both"....See MoreNeed assistance with Huskee Gt Mower (26 hp Briggs & Stratton)
Comments (6)Have a craftsman 19.5 riding mower. Mower will run great for about 10 minutes and suddenly cut off. Can't get restarted, and spend considerable amount of time trying to get started. Have done the followoing.. 1. drained tank of old gas. 2. Replaced filter with new proper filter 3. changed oil 4. Changed filter Great flow from tank to filter. Will start and run for about 10 minutes and cut off. Have also replaced line from carb. to engine. Old line looked okay but replaces as the old line came off very easily and may be getting air when heating up. any suggestions........See Morercbe
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9 years agoexmar zone 7, SE Ohio
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