Carb Float

1. removed gas line, primer lines,
2. Removed carb from snowblower
3. Disassembled, replaced float, reassembled
4. Installed repaired card
5 installed gas and primer hoses
6 Checked for leaks, started engine

Removed the carburetor, dismantled, cleaned and installed new parts.

Removed carburetor from Motor
Removed float bowl from carburetor
Removed float float needle valve and seat. Removed seat with a screw installed new seat with butt end of a drill.
Also removed low idle needle valve which was missing o ring and washer allowing air too bleed past threads leaning out fuel mixture causing the engine to surge and stall adjusting high speed needle could not compensate for the extra air getting in.
Cleaned all parts reinstalled everything using all the new parts I purchased started engine and adjusted low idle speed mixture then high idle speed mixture needle

The Toro single stage snow blower (mod. # 3875) has a fuel line going from the tank to the carb. Use a small vice grip to pinch the fuel line to stop the flow of gas from the tank. Use a marker to scribe a line on the float bowl and carb. The float bowl needs to go back in the same location when replaced. When you look at the bottom of the float bowl one half is deeper then the other. This allows the float to move up an down when the motor is running. Place your small cup and rags under the carb to catch the gas that is going to leak from the float bowl. On the bottom of the carb is a 1/2" bolt that holds the float bowl to the carb, remove the bolt & washer. Gas will start leaking from the float bowl, that is normal. With the bolt removed, remove the float bowl. You may need small hammer to lightly tap on the side of float bowl to break the gasket seal. You are now looking at the brass float. Gently move the float up and down to take note that the needle for the needle and seat assemble is attached to the float by a small wire. This needs to be attached to the new float the same way as you take it out. The wire goes under the tab on the float. Using the six inch ruler, place the end of the ruler on the float bowl gasket area and push up on the float. Measure the distance to the bottom of the float and wright this measurement down, you will need it later. Hold the float in one hand and using a needle nose pliers remove the float hinge pin, it should just slide out very easy. The float with the needle can be removed. If needed clean the carb and float bowl with carb cleaner before assembly. Place the needle on the new float, install the needle and float in its proper location and install the hinge pin. Now use your ruler to measure the float level. Bend the tab on the top of the float till the float level is the same as you measured on the old one. This is a very important step, take your time to do it right. You have just adjusted the float level so it will function properly when the motor is running. Remove the rubber o-ring type bowl gasket and install the new gasket on the carb. The carb has a flat area around the top for the gasket, if the gasket is installed properly it will stay in place so you can install the bowl. Put a new washer on the bolt and install the bowl, bolt and washer. Tighten the bolt, don't kill it, just snug will work. Remove the small vice grips from the fuel line and check for leaks.

Removed carburetor bowl.
Removed float.
Installed new one. Made sure float was sitting level.
Installed carburetor bowl.