Ryobi 18V Hedge Trimmer Blade Question

Just buy a file and push 3 or 4 down strokes down the same slope of the cutter toward the sharp edge. Never file on the flat top of the cutter, only on the slope. Support the frame using a saw horse or pick-up bed. The support makes the file cut the metal better. You can do the same thing with chain saws. You just need the file that fits the cutter. You just hold a consistant angle and count out the same number of strokes. Also, clean out junk between the moving parts, tighten any loose screws, and drop a few drops of 3 in 1 oil between the moving parts. Having things sharpened at a shop is inconvenient and expensive.

I use a dremel with a sharpening stone, if u don't have one you can also use a power drill with a small sanding disk (1 inch) and course sand paper (30 or 40 grit). or you can use a bastard file. its too tight to use any kind of angle guide so just take your time and do it by eye. it shouldn't take much to get them sharp enough to do the job, over-sharpening is unnecessary and dangerous, and will make the blades dull faster. sharpen all the free blades, top and bottom, then start the trimmers to advance the blades to free up the sides you couldn't get. i use a light penetrating oil to clean the blades first, then lithium grease spray to lubricate.