Question about Skil 7 1/4" Magnesium "Mag 77" Wormdrive Saw With Twist Lock Model # SHD77M 72
First, there is no blade lock button on the Skil model 5150. I called the Skil customer service and they emailed me the exact manual for this circular saw. The method I used to loosen a VERY TIGHT blade stud was: spray with WD-40, imbed the blade in scrap wood, set Skil wrench (usually found in back of foot under handle) on so it could be struck going in counter-clockwise direction. Use hammer to strike handle of wrench a couple of times. To replace blade, finger-tighten blade stud, then use wrench to tighten 1/8 turn or (45°).
Posted on Nov 12, 2010
I'm not familiar with that particular saw but I had a circular saw with not blade lock. The instructions suggested I use an box end wrench on the saw bolt and firmly and quickly spin the wrench forward (toward the front of the saw) and let it bang or slap sharply on the surface you have the saw sitting on. Several attempts like this will use inertia to jog the bolt loose. If that doesn't work you may have to buy a specialty thin or flat wrench to fit behind the blade (between the blade and the motor) to to hold the armature while you loosen the bolt. The flat wrenches are available at the Ace Hardware in our area, maybe yours too.
Posted on Jun 27, 2009
I have that saw just stick a screwdriver into one of the teeth perpendicular to the blade and when you tighten the bolt it will keep the blade from turning works like a charm .
Posted on Jul 07, 2009
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Posted on Jan 02, 2017
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