From the bench
Swapping a small engine carburetor in twenty minutes
Replacing a carburetor sounds like engine work, but on most vertical-shaft mowers it's four fasteners and two linkages. Take a photo before you start and you'll put it back exactly right.
Before you start
Run the tank dry or close the fuel shut-off. Pull the spark plug wire. Photograph the throttle and governor linkages from two angles; that picture is your instructions for reassembly.
Out with the old
Remove the air filter cover and filter, then the two nuts or bolts holding the air box and carb to the intake. Unhook the fuel line (a clamp and a rag), then wiggle the carb out and slip the linkage rods free.
In with the new
Hook the linkage rods onto the new carb in the same holes as your photo. Fit the new gaskets in the same order as the old ones: gasket, carb, gasket, air box. Snug the fasteners evenly; don't crush the gaskets. Reconnect the fuel line with a new clamp and filter, and fit the new air filter.
First pull
Fresh fuel, choke on, one firm pull. Let it warm for a minute before you judge the idle. Our carbs ship factory-tuned, so most engines settle without adjustment. If it hunts, check for an air leak at the gaskets before touching any screw.
