Topic: crankcase seperation woes

[scunny]

CB650.. ok I have undone all the bolts according to clymers and haynes(I think the haynes is wrong) I have tapped lovingly all around but not a movement. I knew it would be stuck but am unsure how much persuasion I should use, or any tricks that don't involve case damage.
any input will be appreciated

[DammitDan]

I started at the back and worked my way around front, and used rubber/wood mallets and long-handled flathead screwdrivers to pry the mating surfaces apart.  Got it to separate by knocking at the thickest area at the back (where the engine bolts to the frame).

It wasn't too difficult for me though...  Just to make sure, go over ALL the bolts again in the Clymer book.  It's easy to miss one.

Unfortunately I didn't take the rotor off before I removed the engine from the frame, so it was all in vain.  I couldn't remove it even with the use of several strap wrenches, a flywheel puller and a vice grip.  There was something regarding the rotor that stuck the top and bottom half together...  I ended up buying a new engine all together 

[scunny]

the rotor is out and the pinion shaft, I have turned this motor around all angles but cannot find any "lurking bolts" am trying to avoid the flat screwdriver method due to potential marring of the surfaces

[crazypj]

are you really sure all the bolts are out? even the ones under the starter motor and oil pump pick up inside sump?
 5 on top, 17 underneath (I think)
PJ

[crazypj]

I started at the back and worked my way around front, and used rubber/wood mallets and long-handled flathead screwdrivers to pry the mating surfaces apart.  Got it to separate by knocking at the thickest area at the back (where the engine bolts to the frame).

It wasn't too difficult for me though...  Just to make sure, go over ALL the bolts again in the Clymer book.  It's easy to miss one.

Unfortunately I didn't take the rotor off before I removed the engine from the frame, so it was all in vain.  I couldn't remove it even with the use of several strap wrenches, a flywheel puller and a vice grip.  There was something regarding the rotor that stuck the top and bottom half together...  I ended up buying a new engine all together 

 After you get bolt out, rear axle works as puller
PJ

[scunny]

I used the rear motor mounting bolt on the pinion shaft, that worked a treat.
I have out the bolt in the sump and under the starter etc out. the haynes manual and me disagree on the number of bolts so will have to work out how to use a fiche? to see the official count before I decide to get brutal

[bryanj]

As said there are a couple of bolts lurking under the starter ALSO one inside the oil sump going upwards

[crazypj]

once you know for certain all the bolts are out use the factory carrying holes to pry apart (front right and rear left. even if you do mark the case halves you can dress them back with a file and it wont affect sealing. pic is 550 but 650 is same as far as I remember.
PJ

[scunny]

after much staring and counting of bolts, a few beers for courage and a newly purchased larger rubber hammer did the trick..... the quest goes on.