How To Install Carburetor Kit Briggs And Stratton

How do you rebuild or overhaul a small engine carburetor?

Rebuilding the carburetor may exist required if basic adjustments don't fix your modest engine problems or ameliorate performance on your lawn mower or outdoor power equipment. Follow the steps below for overhauling pocket-sized engine carburetors.

WARNING: Always read the engine and equipment manual(s) before starting, operating, or servicing your engine or equipment to avoid personal injury or property damage. Fuel and its vapors are extremely flammable and explosive. E'er handle fuel with extreme care.

See an authorized dealer or contact Briggs & Stratton if y'all are unsure of whatever procedure or have additional questions. Find all Engine Safety Warnings

Footstep 1: Removing the Carburetor
Step 2: Disassembling A Float-Type Carburetor
Step 3: Inspecting the Carburetor
Footstep iv: Inspecting Air-Fuel Mixture Screws
Step 5: Reassembling the Small Engine Carburetor
Step six: Attaching The Carburetor & Air Cleaner Associates

Step 1: Removing the Carburetor

• Disconnect the spark plug lead and secure it away from the spark plug. Then, remove the air cleaner assembly.
  

• Turn off the fuel valve at the base of operations of the fuel tank. If your engine does non comprise a fuel valve, use a fuel line clamp to foreclose fuel from draining out of the tank while the carburetor is disconnected from the engine.

• Some carburetors comprise an electrical device at the base of the fuel basin to command afterfire. Disconnect the device, known as an anti-afterfire solenoid, past removing the wire connector from the solenoid's receptacle.

• With the carburetor however connected to the governor, unfasten the carburetor mounting bolts. If a connecting pipe joins the carburetor to the engine block, first remove the piping mounting bolts. And so, disconnect the carburetor from the pipe by removing the nuts and sliding the carburetor off the studs. Sketch the governor bound positions before disconnecting them to simplify reattachment.

• Then, disconnect the governor springs and remove the carburetor, taking special intendance not to curve or stretch links, springs or control levers.

Step two: Disassembling A Float-Blazon Carburetor

Your carburetor contains a modest amount of fuel. Fix a clean bowl to take hold of dripping fuel and shop modest parts. During disassembly, inspect the bowl for dirt and debris to make up one's mind the status of your carburetor.

• Remove the fuel bowl from the carburetor body. The fuel bowl may be attached with either a bolt or the loftier-speed mixture screw.

• Push button the hinge pin out of the carburetor body with a small pin or pivot dial. Accept intendance to tap only the pin to avoid damaging the carburetor torso.

• Remove the float assembly, inlet needle valve and fuel bowl gasket.

• If your carburetor contains an idle mixture spiral, remove information technology forth with the jump.

• Rotate the throttle plate to the closed position, remove the throttle plate screws and the throttle plate.

• Remove the throttle plate shaft and foam seal.

• Then, remove the choke plate and choke shaft and felt or foam washer in the same style.
• Use your carburetor repair kit to identify replaceable welch plugs. These seals embrace openings in the carburetor left over from machining. Insert a sharpened 5/32" pivot punch at the border of each plug to be removed and tap cleanly to free the plug.

• Unscrew the principal jet from the side of the carburetor pedestal (if equipped). And so, unscrew the emulsion tube; it may be screwed in tight. A carburetor screwdriver is the best tool for the chore. It's designed to fit the slot in the caput or the emulsion tube and so that you won't impairment the threads inside the pedestal of the tube itself as y'all loosen it.

• Remove the emulsion tube.

Step 3: Inspecting the Carburetor

• Soak metal and plastic carburetor parts in all-purpose parts cleaner for no more than than 15 minutes to remove dust. Or, while wearing safety glasses, spray the parts with carburetor cleaner. Then, wipe abroad solvent and other residue thoroughly using a clean textile. Never utilise wire or tools because they tin damage or further obstruct plugged openings.
  

• Inspect all components and apply additional carburetor cleaner to loosen stubborn grit and to clear obstructions.
• Supersede whatsoever parts that are damaged or permanently clogged.

Step four: Inspecting Air-Fuel Mixture Screws

• Brass mixture screws control the air-fuel mixture at high speed and at idle. Over tightening can impairment the tip of the spiral so that proper adjustment is no longer possible.

• Remove whatever non-metal parts and soak mixture screws in carburetor cleaner for 15 minutes.
• So, inspect them carefully for wear. Supervene upon a mixture screw if the tip is bent or contains a ridge.

Step 5: Reassembling the Small Engine Carburetor

• Install new welch plugs from your repair kit using a pivot punch slightly smaller than the outside diameter of the plug. Tap on the punch with a hammer until the plug is flat (stiff blows with the hammer volition cause the plug to cave in). Then, seal the outside border of the plug with enamel nail polish.
  

• Assemble the choke past inserting the return spring inside the foam seal and sliding the spring and seal assembly onto the choke shaft. Plastic choke plates have a finish take hold of at one end of the spring; metal plates have a notch to hold the hook at one end of the spring.
• Insert the asphyxiate shaft into the carburetor body and engage the return spring. If the choke lever uses a detent leap to control the choke plate position, guide the spring into the notched slot on the choke lever. Place the choke plate on the shaft with the single notch on the edge toward the fuel inlet. Lift the choke shaft and lever upward slightly and turn counterclockwise until the stop on the lever clears the spring anchor. Push the shaft downward.
• Insert the choke plate into the choke shaft or attach information technology with screws then that the dimples face the fuel inlet side of the carburetor. The dimples help hold and align the choke shaft and plate.
• Install the throttle shaft seal with the sealing lip down in the carburetor trunk until the top of the seal is flush with the superlative of the carburetor. Turn the shaft until the apartment side is facing out. Attach the throttle plate to the shaft with the screws so that the numbers on the throttle plate face the idle mixture screw and the dimples face in.
• Install the inlet needle seat with the groove downwardly, using a bushing driver. Then, install the inlet needle on the float and install the assembly in the carburetor body.
• Insert the hinge pin and eye pin. Then, install the rubber gasket on the carburetor and attach the fuel bowl, fiber washer and bowl nut.

Step vi: Attaching The Carburetor & Air Cleaner Assembly

• Position the carburetor and so the beveled edge fits into the fuel intake pipe and attach the carburetor with nuts or bolts, as required, leaving these fasteners loose for last tightening with a torque wrench. Consult your Briggs & Stratton Authorized Dealer for proper tightening torque.

• Install the air cleaner assembly, making sure that the tabs on the bottom of the air cleaner are engaged.

More Carburetor Repair Resources

How to Clean a Minor Engine Carburetor

Source: https://www.briggsandstratton.com/eu/en_gb/support/faqs/browse/carburetor-rebuild.html

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