Thanks guys, very interesting answers. The engine is a clamp on, rope start, tiller simple version, The combo lives inside a marina, but night thieves specially on very foggy days (London type) could be tempted to steal it, as has happened before. Crooks have become very skilled these days, an easy money go for it issue.
OB uses long bolts with nuts and assume wheel locks are the ones with a key to unlock them, right ? Hammering nuts will be much better than doing nothing, but piece of cake with whipped cream for thieves to pull nuts off. A nice diagonal whack with a thick metal bar, the ones with sharp end and nuts are offf near instantly.
How about an overdose of red Loctite applied to nuts and then all heads filed down to become plain rounded ?
Anyway, going back to the original inquiry, If using an electric welder would I need to remove all electrical components such as CD, Ignition, Pulser Coils grounds from engine block as not to fry those components if electric welders happens to do so ?
Happy Boatting