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Bosch use bayonet fitting blades and once the retaining pressure is released the blade will turn a quarter turn and then can be withdrawn.
The retaining pressure is released by using a long thin screwdriver or allen key (depending on version) through the hole in the handle to access the screw in the top of the quill. Once engaged the screwdriver or allen key is turned anticlockwise.
my 15-82 has only one blade.There is a plate with three allen bolts to undo.Under that are two more allen key bolts to to undo.The blade moves although these two bolts are tight.The plane when looking at the drum has 6 inline holes.
I couldn't find that specific model number Bosch saw, but here is the link to get user manuals from Bosch in case you mistyped it.
(It's a long link that wouldn't all fit here, so I had to put a carriage return in it)
Or they may have a similar saw under a new model number. Here's the current model number of a very popular saw that has a less-than-obvious blade changing method 1587avsk
To lock a blade in just push the blade in until you hear it click. This is what engages the blade. To disengage just turn the blade clamp until the blade pops out. This will lock it open until you insert a new blade.
hi sounds like the motor brushs are worn down,some bosch models you can change them without removing the motor ,but others its best to remove it,they just twist out,and to refit use a small blade flat blade screwdriver to tuck tab in,thanks
There are two types of "quick release" mechanisms on the new Bosch jigsaws, the twist-top handle found on 1587 models, and the lower-lever found on the 1590's.
The "twist-top" is the black cap on the 1587 at the front of the saw. You must first put the orbiting control ( on the side of the saw ) to position number III. This releases pressure on the blade. Then you lift the black cap, rotate three or more turns counter-clockwise ( as seen from the top ) to release the locking mechanism. If the saw blade is cool, you can carefully remove it with a single one-quarter turn using your fingers. If the blade is still hot from sawing, use a pair of pliers, but be gentle. Hot blades can bend easily and jam.
The 1590 models are quite a bit easier. You still want to put the orbit control to position III to release pressure. But the quick-release is a simple flick of the black switch on the front face of the saw.
I still have my 30 year old Bosch with the screw-in blade holder. It still works and the saw still runs smooth as a sewing machine. If you are doing a lot of production work where you need to change blades frequently, the Bosch 1590 is the clear choice for quality and value. In thirty years of using Bosch tools, I have only had to do normal maintenance and had only one minor failure, which was the blade changing mechanism on the 1587 model. I broke it by tightening too far. SO, if you have a 1587 model, DO NOT OVER TIGHTEN. As it is, this non-warrantee repair only cost $16 bucks and took two days.
It should go without saying, but just to be safe I'll say it anyway... OBVIOUSLY, you should UNPLUG the tool when you are changing blades. Good luck!