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Posted By Sean McGillicuddy,
May 19, 2017 at 10:48 AM
In some diagrams I see this AV or NON- AV .. what are they referring to?
Your simple question had me stumped
AV is Anti-Vibration where the motor is mounted on rubber shocks. The Non-AV is mounted solid. Easy way to tell is to hold the saw like you're cutting and try pushing the bar down against a limb or solid surface, If the bar pivots, it's AV, otherwise it's not.
Hookup's the same either way. Fuel line with filter goes to the top carb fitting. Smaller fitting on the purge bulb goes to the bottom carb fitting.
Some stihl saws are completely different models as an AV version and a non AV version such as the 020 AV and the plain 020. Different platforms altogether.
It helps to remember that very often these signifiers -- like "AV" or "Automatic" (oiler) or "Electronic" (ignition) or "Quickstop" (chain brake) were promotional terms used to draw attraction to newer or non-standard features. Now that virtually every saw on the market has an automatic oiler, chain brake, electronic ignition and some form of AV, none of the model names mention any of those features. Looking back, it's true that the 020 and 020AV are built on totally different platforms, but they both have AV. It's just that one is an older platform (020AV) and one is newer (020 well-of-course-it's got-AV)
Stihl did a lot of weird stuff like putting a Pro sticker on a few of their pro saws but not other pro models. Some Pro stickered saws had optional stuff while other saws with a Pro sticker are Identical to the non pro stickered saw. They put Magnum stickers on some of their saws but not on some identical models which made people think the ones with the Magnum sticker was better. Some fool in the marketing department with a brainfire prolly.