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(More customer reviews)Okay, here's the deal: this is a Chinese knock off with poor assembly and use instructions. What else is new? But anyone who feel they have enough mechanical skills operate a chainsaw and also sharpen its chain can figure this tool out. If you think you cannot assemble and operate this tool based on basic logic, then stop right here and buy the expensive Oregon model, because the assembly instructions are indeed a head-scratcher. If you need a better manual or want to get better insight, go to Northerntool (model 193021) and download their model .pdf which the same exact tool. But it's the same tool, same factory, different color so most likely the instructions are the same.
I will apologize ahead of time to the few anal purists out there who may disagree with my take on this, but here goes: You first take your oldest or worse chainsaw chain - the one that's just about on its way out - and use it as the first chain to be sharpened. If you only have one then take your time aligning it on the grinder before you start grinding, because you can ruin it. Better yet go out and buy a new chain ($18) to see what the final sharpened product should look like. I used an Oregon model 73 chain which is from my Husqvarna saw; Oregon's web site gives you the specifics for your chain. Note how every other chain link is sharpened in the same direction (RH, LH), in my case 30 degrees.
First off be forewarned that if you torque the knobs down on this tool nice and tight, you will surely strip everything out, so just snug things down for now. Also, don't plug it in yet, blah, get everything away that could ignite with a spark, blah, use a mask and eye protection, blah, blah (OHSA nerd, remember?)
Once assembled, the rear of the grinder base should be clamped down near the two permanent mounting bolt holes, with the forward half of the base hanging out over the front edge of the bench so the chain can hang freely. Careful, because if you tighten too tight, the cheap cast base will crack.
Loosen that side clamping plate knob then reach below; twist the base to the 30-35 degree mark (your chain's grinding angle), snug it down; then hang the chain over the grooved track with the small rectangles holding it in place. At the same time lower the grinder to line up the wheel with the gullet of the chain cutter.
Tighten the clamping plate knob against the two rectangles just snug for now, then reach around back and turn that knob to adjust that stop so the wheel so it doesn't allow the cutter to cut further than it should. You'll need to adjust this depth as the wheel gets worn. Still holding that wheel against the chain, flip that finger thingy over and adjust the wheel for it until it sits snug behind the chain link being ground.
Once you're happy with the angles, plug it in, and gently lower the wheel towards the chain, give it a hit or two, gently, or risk breaking the cheapo pinko grinding wheel. (The wheel should be dressed with a dressing brick first but get back to me when you buy your $400 sharpener.) Go through the entire chain, sharpening every other (same direction) link.
Once you get back to the first link, you will need to turn the motor off and let it cool down a few minutes. Really, do this and been patient. I've read elsewhere that users have had issues with the drive belt, the motor gears melting, etc., so use common sense and let the it chill after every few minutes of use. It's a cheap grinder made with cheap parts. Then leaving the chain in place, swing the base around to the other side, again 30-35 degrees, align it and sharpen through gain. You may have to make fine adjustments here and there; use common sense and you will get the hang of it.
Again, not the Festool of chain grinders, but it will sharpen chains for about the price of what a grinding wheel for an upper end grinder costs.
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Timber Tuff CS-BMM Benchtop Electric Chain Saw Chain SharpenerBench-mount 110V Chainsaw Sharpener Essential for long-lasting, proper chain maintenance. Mount this Sharpener in your shop, and never pay for a store sharpening again. 5,600 rpm motor; 110V, 60 Hz power; Easy adjustments in a flash with adjustable sharpening angles; Good visibility and easy handling of chain. Includes 3/16" grinding wheel. Weighs 6 1/2 lbs.; Bench-mount 110V Chainsaw Sharpener
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