Reply To: 3 1/2 HP Firestone

[frankr]

So you are convinced the clunk is from the lower unit??? If it is, remove the cap from the front of the lower unit to see what’s going on in there. But you also say that the throttle lever is tight to move. That makes me wonder if the lockup problem is something came loose under the flywheel. It is very likely that it will need ignition service anyway, so pulling the flywheel for a looksee isn’t going to be wasted effort.

Removing the powerhead isn’t going to resolve anything.