Hi I have 6.5 hp B&S alwn mower I have noticed where the dip stick pipe meets the block it is loose is there a way to fix this?

Thanks

Without the engine model, type and code numbers this is a guess.
There should be an "O" ring on the tube to keep it from leaking, then loosen the screw on the side of the engine shroud, push the filler tube down as far as it will go and retighten the screw on the engine shroud. Have a good one. Geo