When I pull the manual starter cord, it doesn't make the crankshaft turn. What's wrong ?

Question edited for clarity 'Devilish' to DeVilbiss GB5000 Type 2 Generator.

You just unbolt the pull starter assembly from the side of the engine. There is a clutch type unit that grips the crankshaft.

https://www.google.com/search?q=devilish+gb5000+generator+parts

No, the compression on an engine that big would be to hard to turn with a cord start. I have seen people start engines using an impact driver or electric drill on the crankshaft nut.

Can really only be two things

1. The engine is seized.

2. The pull starter assembly is seized.

Remove that cage and see if the pull cord moves. Put a socket on the end of the crankshaft and see if you can turn it. It there engine oil in the sump?

If you are going to be repairing B&S air cooled engines, may I suggest that you make a handy tool for repairing the pull cord starter. To access the pull cord assembly, remove the blower housing to expose the backside of the pull starter. All of the B&S pull start engines have a starter clutch that secures the flywheel to the crankshaft. These clutches go bad after a while. Go to a local repair shop and ask if you can have an old B&S starter clutch. Take it apart and keep the spindle. Have someone weld a T bar handle to the spindle. You will use this to reload the spring in the recoil starter, winding backwards to load the spring. Use a C clamp to hold it in place after loading the spring. Insert the new nylon pull rope through the grommet and out through the hole in the rope spool. Tie a figure 8 knot in the end of the new rope. Slowly release the C clamp to allow the spool to rewind, loading itself with new pull cord. You need about +/- 20 inches of pull cord. Replace the rubber handle on the pull cord and you are ready to mount to blower housing back on the engine. I hope this helps. PS. See the attached url for the Operator's Manual for the 9000 horizontal. http://www.tranzsporter.com/tpdf/Briggs%20&%20Stratton%209000.pdf

remove the starter assembly and see if it is the recoil or engine. if by removing the recoil it recoils the cord then it is most likely a seized engine but pull the rope a few times with the assembly in your hand to check it then try turning the flywheel by hand and see what happens

If you need further help, I’m available over the phone at https://www.6ya.com/expert/kelly_69a0cf1b13789df1

Hi, you have to undo the clutch spider off the crankshaft but you will need to lock the piston with a piston stop to do this. Regards Phil.

check to see if it is if the cylinder is full of gasoline. remove spark plug and turn motor over.
caution, disconnect and ground spark plug wires, do not stand in front of spark plug hole, you may get sprayed with gasoline. spin motor with starter or pull rope.
if this doesn.t free up the blade look under it for "stuff around the drive shaft. clear it out.
other solutions are expensive and involve bent cranks.

Can you rotate the engine crankshaft from the drive end? If ok, then remove the starter assembly from the engine and try to pull the cord. If locked, look for mis-wound cord on the spool and try to turn the spool somewhat. Any binding should be quite obvious. Hope this helps!

Take cover off were the belts are located. turn power button to off! see if the shaft can turn with a wrench. That should turn 180 degrees. If stuck you may need to forch it. Then try to pull cord.
Good luck

If the engine will not crank-if it has an electric start, first check the battery and connections to the starter and ground. If the battery is good and the connections are clean and tight, then I would check the ignition switch. If it clicks once when the key is turned to the start position, check for a seized crankshaft (see below) If it does not click, then it could be the starter, solenoid, or the ignition switch. If it has a manual pull start, and it will not pull, check to make sure the crankshaft can turn freely and if not, disconnect the pull starter and check it again-if it turns freely the rope start mechanism is hung up-it must be freed up before you can pull start it. If the crankshaft will not turn at all you probably have a serious problem that will require a major teardown.