Members Snakeoil Posted February 23, 2020 Members Report Posted February 23, 2020 First a tip on removing the head. The four screws that hold the head to the upper arm are not easily accessed with a screwdriver. Yes, you can get to them, but it is not a straight line shot and if they were put in by Arnold or have some corrosion, you might damage the heads trying to get them loose. Here is a method that reduces the risk of damage while increase the torque you can apply to the screws. I'm using a Chapman Screwdriver bit in their small ratcheting handle. You can apply pressure to the screwdriver bit by pressing on the end with your thumb while cranking on the ratchet handle to break the screw free. I pulled my head off after putting my gearbox back together. I measured both the roller and the cam groove and they are just about a line fit, meaning near zero clearance. So no need for replacement. This is simply a follow up to my previous thread on restoring OEM stitch length. regards, Rob Quote
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