Service & Maintenance Question
I used the Husqvarna sharpening guide and file to resharpen...
Service & Maintenance Question posted November 25, 2017 by Burke Nelson
261 Views, 3 Comments
Question:
I used the Husqvarna sharpening guide and file to resharpen my 18" 450 chain. Must have done something wrong- because now it won't cut. Is there a way to recover, or should I throw the chain out and start over?
Answer
Most sharpening mistakes can be corrected. Now if you only filed the cutter you may file to a point that depth gauges are preventing the cutters from doing their job. Also when filing the .325 chain you need to use 3/16 file in order to have the proper hook. If you use 7/32 file then the cutter don't have enough to self feed themselves into the cut and cutter will just slide over the wood instead cutting.
Also one last and I this sound dumb but make sure you have chain on correctly as I have seen a few in my shop that the operator said would not cut just to find them installed backwards.
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Thanks- I wonder about the depth gauges- The Husqvarna guide doesn't seem to really let the gauge extend through the opening, and so it doesn't expose any material to file off. There is a small notch in the opening that doesn't seem to let the gauge extend through. I bought the Husqvarna sharpening guide- there is no size mark on the file- how do I know if it's 3/16 or 7/32?
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I wish the shops that sale these tools would simply ask the customer as which chain size they are shapring before selling the tool. Sure would save some hard feelings later.
The file should be marked as to what size it is but if not then a caliper measuring it diameter is about way to measure it other than comparing it to a known size file.
As for the depth gauges it depends on the depth type as to if the depth will work or not. I haven't personally haven't seen the tool meant for the Oregon raker/depth gauge that looks like someone has bent them over with a hammer. With cheap depth gauge measuring tool I have I am able to measure them and file to the right height counting the number of full strokes of my flat file on the first couple of gauges. From there I file the rest the same number of full strokes; I just double them as I go. May not be done with a gauge tool that stops the filing when the correct is reach but it works. Now this with a grain of salt as I have been sharping my own chains for over 40 yrs and have learn a procedure that works for me.
I did buy one tool that supposedly lets you measure and file the depth gauge depth at the same time but it didn't even work correctly.
It probably would be best you visit a local shop see if they would you give a lesson on the chain sharpen procedure. I show my chainsaw customers how to do it but most would rather just have me to do it for them. Most these customers are just casual users. The serious users are will to learn as it makes their work go faster with a correctly sharpen chain as never know when they are going to dull a chain in the field. I have dull chains as quickly as the first cut especially when I hit a nail or piece of wire and some types of wood simply dulls chains quickly.
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