Bob is absolutely correct.
My Ashwamegh was leaking from the cylinder studs. That means you don't have to tear down the engine.
Just drain the water, untorque the studs, remove them one at a time, reseal the threads and reinstall. You might have to lift off the head to double nut the studs (to get them out), but you won't have to disturb the cylinder. Consider it an oportunity to de-carbon the head.
Then retorque.
Also, was the base gasket mentioned? It's made of paper, and might be leaking. In this case, you could lift the cylinder enough to change out the gasket with an new one(s). You can split the gasket(s) at all the holes, and use sealant. You need to take compression height readings and add or subtract gaskets to get the correct value for your engine and the altitude it operates.
If you do lift the cylinder, be sure to put too many base gaskets in before checking the compression height. Then tear out the excess ones untill you are in spec. I made mine out of manilla folder stock from the secretarial supply store.