Carburetor Replacement On A Snow Blower – Hipa
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Snow Blower

Carburetor Replacement On A Snow Blower

by Jeremy HIPA 18 Dec 2022 0 Comments


This blog is a step-by-step instruction for replacing the carburetor on a Cub Cadet snowblower. The most common reasons for replacing the carburetor are if the engine won’t start, starts then stops, runs rough, or leaks gas and other causes have been ruled out and draining and cleaning the carburetor does not fix the problem.

Replacement

Before you begin the replacement, you need to make sure the engine has cooled and remove the wire and boot from the spark plug to prevent the engine from accidentally starting. We recommend performing this procedure with no fuel in the tank.
Step 1: You need to remove the retaining clips securing the chute control rod and pull the rod free.
Step 2: Now remove the retaining clips securing the support bracket pin and pull out the pin.
Step 3: Unthread the wing nut from the center gearbox mounting bolt. Lift the gearbox off of the support bracket and set the gearbox and chute assembly aside.
Step 4: Next use a 3/8 inch socket to remove the bolt securing the belt cover and pull the cover off. Now release the driver belt idler pulley tension spring. Use a half-inch socket to remove the upper two mounting bolts securing the gearbox support bracket.
Step 5: Use a 3/4 inch socket to remove the lower bolt. And now you can remove the support bracket.
Step 6: Use a 10 millimeter socket or wrench to remove all of the mounting bolts securing the muffler cover and lift off the cover. Next remove both the choke knob and the throttle knob.
Step 7: Now use a Phillips head screwdriver to unthread the lower starter switch box mounting screw, detach the primer line and the ignition switch wires.
Step 8: Use the 10 millimeter socket to remove the nuts threaded on the carburetor mounting posts and pull the control panel free. Release the retaining clamps securing the fuel line to the tank and pull the line off. Now slide off the front choke plate gasket , remove the choke plate itself and detach it from the choke linkage. Slide off the rear gasket, detach the throttle spring and linkage from the carburetor and slide the old carburetor off of the mounting posts. You are now ready to install the new carburetor.
Step 9: Transfer the choke linkage and the fuel line from the old carburetor to the new one. We recommend installing new gaskets when replacing the carburetor. Align the intake gasket on the mounting posts then slide on the new carburetor.
Step 10: Connect the throttle linkage and spring. Next slide on the rear choke plate gasket. Replace the choke plate and reattach the choke linkage. Slide on the front gasket, reconnect the fuel line to the fuel tank and secure it with the retaining clamp. Reposition the control panel and make sure the choke plate stem protrudes through the hole in the panel and the breather tube connects to the air intake box. Align the primer line in the groove on the panel. Thread the nuts on the mounting posts and tighten with the control panel in place. Rethread the lower starter switch box mounting screw. Reattach the primer line and the ignition switch wires. Replace both the choke and the throttle knobs, and realign the muffler cover. Thread and tighten the bolts to secure.
Step 11: Now reposition the chute gearbox support bracket and replace the bolts. Reset the tension spring on the lower bolt, replace the belt cover, bolts and tighten. Reposition the chute assembly on the chute adapter. As you realigned the gearbox on the support bracket, confirm that the center mounting bolt is in place in the gearbox housing. Then thread the wing nut on and tighten. Reinsert the support bracket pin and secure it with the retaining clip. Confirm that the holes in the gearbox coupler are facing straight up with the chute facing forward and that the chute control lever is at the one o’clock position.
Step 12: Now insert the rounded end of the chute control rode into the gearbox coupler and the hex end into the control coupler. Secure the rod with the retaining clip and confirm that the chute has a full range of movement.
Reattach the spark plug wire and boot, refill the fuel tank and your snow blower should be ready for use.

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