OutdoorKing Repair Forum Forums Restoring, Customising and Modifying Tech Talk SB Model 45 - Clutch and Engine Problems

Thanks DJ, looks like you have a paper air filter. Now, the next step is to remove the carburetor and fuel tank from the engine. On many B&S engines the fuel tank is just suspended from the underside of the carburetor and supported by the carburetor's two mounting bolts, but deep tanks like yours will probably have an additional support screw. I identified what seems like the right screw previously in this thread:



You need to remove that screw and the two carburetor mounting bolts, so you can simply take the carburetor and fuel tank off the engine. Be very careful of the governor spring, circled in yellow below:

That spring is delicate, and if it is damaged it will have to be replaced with exactly the right spring.

The speed control Bowden cable will still be attached, but that should not be a problem at present. Please remove the carburetor and tank, put them on a suitable support that holds them steady while you work on them, and post a picture or two. When you have that done, we get to the important parts of the job.