It is a mulching blade but that's what's been on it since the 70's.
A blade that is used to bag the grass has a different angle (steeper) which
generates the air flow necessary to bag the grass. A mulching blade does not
have this. Invest a few bucks in a regular blade if you really want it bag
After further consideration, I think I might be wrong about it being
the original blade. Today I got a "universal" 21" blade from Home
Depot but the center hole isn't wide enough. Think it would make any
difference if I reamed out the hole as opposed to finding a Snapper
blade that fits? Anything special about Snapper blades?
You wont ream it evenly, it will make it unbalanced and will have to
be balanced, but I bet it has a mulch blade, the best. CR has mulch
ratings you can compare, I bet your machine rates well so its your
conditions making it clog.
A universal blade will not work on a Snapper. Go to a lawnmower shop and
ask for a snapper bagging blade. It's has a higher lift than the std
Snapper blade. Take your current blade (the one that fits) with you to
compare length and center hole.
If the machine is the same, three factors besides moisture can cause
The amount of grass you are cutting.
The stickiness of the stuff you're cutting.
The amount of air the mower is sucking.
Raising the cutting height can help a lot. It lets the machine suck
more air while reducing the amount of vegetation being cut.
Cutting more frequently will reduce clogging.
A habit of cutting too low in summer can change a lawn so that clogging
becomes a problem. After low cutting, the sun heats the soil more, and
that can allow weedy hot-weather grasses to take over. Cutting at 3-5"
can keep the soil cool enough for fescue to thrive. Fescue cuts nicely
in my experience.
Cutting higher may improve a problem lawn so that it becomes easier to
mow each year. A lawn that once caused clogging dry may improve so that
it cuts without trouble wet or dry.
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