As the M92, 93,95 Mannlicher turnbolt action, the bolt assembly is not as refined as in the later Mannlicher-Schoenauers from the 1903 on. (The M1900 M-Sch is somewhere in between). In fact, the "Mannlicher" bolt assembly is about the same as it's predecessor, the German M88 "Commission rifle" bolt designed by Lois Schlegelmilch, Spandau.
This is my way for disassembly:
Remove bolt from action.
Uncock bolt by turning cocking piece (with safety and firing pin nut) to the left.
Pull out bolt head. Watch for the extractor!
Take the bolt in left hand, firing pin tip down and thumb pressing safety forward. Press firing pin tip on a hard, non-slippery object (hardwood, not fine furniture!) and unscrew firing pin nut. It is threaded full length. On some British sporters the firing pin nut is additionally secured by a small set screw from below or left. Remove this first.
Release down pressure. Striker and mainspring will come out front of bolt.
The safety and it's spring may be pulled out of cocking piece.
Reassemble:
Slip striker and mainspring into bolt body. Note: There is a small flat on the striker, just in front of the thinner, threaded rear part. This flat should be pointing to the round side of the body, opposite to the bolt handle and cocking cam.
Compress mainspring again. Slip on cocking piece, aligning it with the flat on striker. Screw on striker nut until flush with rear end of striker or the set screw hole is aligned.
Place bolthead into bolt. It will only go in one way.
Cock bolt.