Part Location Diagram of 398187 Briggs and Stratton Float-carburetor
See part A133 in the diagram
( Grid squares measure 1x1 inch )

Float-carburetor 398187

Manufactured by:
Briggs and Stratton
ERP Number:
ERP8961149
Part Number:
398187
Original Equipment Manufacturer ?
  Works with your model  12D393!
On Order

Easy 

30 - 60 mins 

(10 rated repairs) ?
  Works with your model   12D393!

Product Description

?

This is a genuine OEM supplied replacement part designed for use with Briggs and Stratton engines. This float controls fuel flow into the carburetor bowl by adjusting the needle valve. Includes a plastic float and a metal pin. To complete this repair you would need a wrench and pliers.

Frequently Purchased Together

?

Troubleshooting

This part works with the following brands:
  • Briggs and Stratton
  • Toro
  • Cub Cadet
  • Lawn Boy
  • Craftsman
  • Simplicity
  • MTD
  • Murray
This part works with the following products:
  • Engine
  • Lawn Mower
  • Pressure Washer
  • Snow Blower
  • Chipper Shredder
  • Generator
  • Leaf Blower / Vacuum
Part# 398187 replaces these:
398187, T398187,

Customer Part Reviews

?
4.7
Average Rating (out of 5):
★★★★★
★★★★★
(3 Reviews)
Click to filter by ratings:
  • 5 stars
    2
  • 4 stars
    1
  • 3 stars
    0
  • 2 stars
    0
  • 1 star
    0
  • 1
Sort by:  
Sorry, we couldn't find any existing reviews that matched. Try using some different or simpler keywords.

Questions & Answers

?

Our customer Service team is at the ready daily to answer your part and product questions.

Be the first to ask our experts a question about this part!

Ask our Team

We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.

Does this fit my product?

Customer Repair Instructions

All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.

Easy 

30 - 60 mins 

(10 rated repairs) ?
  • 1
Sort by:  
Sorry, we couldn't find any existing installation instruction that matched.

Hard to start, little power. Black smoke at start. Symptoms indicate flooded carb situation

Galen from Morrison, Illinois

19 of 19 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
1- 2 hours
Tools:
Pliers, Screw drivers, Socket set, Wrench set
Parts Used:
797622, 692667, 398188, 398187
Suspected problem due to ethanol damage to engine not designed to use it.
1. Drained fuel tank.
2. Removed shroud, air filter assembly and disconnected fuel line. (Good time to replace air filter)
3. Removed carburetor, noting manner of attachment of throttle linkage.
4. Disassembled float bowl from carb.
5. Removed float, needle valve and needle valve seat.
6. Remove old air cleaner gasket.
7. Thoroughly cleaned carb and parts to be reused.
8. Replace needle valve seat per instructions supplied with new part.
9. Replace float and needle valve with new parts.
10. Reassembly float bowl on carb.
11. Reattach carb to engine, including reattachment of throttle linkage.
12. Reinstall fuel line. (Note: I recommend installing an in-line fuel strainer.)
13. Reinstall air filter assembly and shroud.
14. Fill fuel tank
15. Test run engine.
Engine now starts easy and has same power as before.
I try to avoid ethanol in my small engines even in those supposedly designed for it. It\'s a powerful solvent and a potential troublemaker in my experience.
Did you find this story helpful?
Thank you for voting!

Pressure washer engine left standing for 7 years, carb gummed up, air filter broken off. Gas pouring out of carb.

Robert from Duluth, Georgia

3 of 3 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
1- 2 hours
Tools:
Pliers, Socket set
1) Stripped the carb, ordered parts
2) Soaked the carb parts in NAPA carb cleaner
3) reassembled using the genuine B&S parts obtained from ereplacementparts.com
4) installed new plug
5) straightened out the bent air filter bracket, installed new cover and element.
6) engine started and ran on 3rd or 4th pull
Did you find this story helpful?
Thank you for voting!

Old fuel float was cracked and, had sank to bottom of carburetor.

jason from Plano, Texas

3 of 3 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Pliers, Screw drivers, Socket set
Parts Used:
398187
Disconnect fuel line from carburetor. Remove bowl on bottom of carburetor by removing nut. Carefully, remove the pin from the float and it will come off along with the fuel needle. Then just put back together. Do this outside because you will spill a bit of gas and it will stink until it dries out.
Did you find this story helpful?
Thank you for voting!

Needle valve seal was melted due to ethanol in fuel

Dennis from GARLAND, Maine

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Pliers, Screw drivers, Socket set
Parts Used:
398188, 398187
1.shut off fuel flow
2. Remove air cleaner assembly
3. Remove fuel line from carburetor
4. Remove carburetor bolts and throttle linkage
5. Unbolt carburetor bowl
6. Remove float and needle and old seal
7. Insert new seal with groove side down and press it
down using non-cutting end of drill bi t sized to fit seal
tunnel
8. Install new needle and float assembly and other parts
Did you find this story helpful?
Thank you for voting!

Fuel leak from carburetor.

David from OWASSO, Oklahoma

1 person found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Nutdriver, Pliers, Screw drivers, Socket set, Wrench set
Parts Used:
398188, 398187
Removed carburetor air filter
Removed carburetor
Removed float cover using half inch socket
Replaced float and needle valve and rubber bushing
Reinstalled carburetor
Did you find this story helpful?
Thank you for voting!

Lawn Mower would surge at idle and under load (low rpm to higher rpm) on itÆs own

Rickey from GREENVILLE, Texas

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Nutdriver, Pliers, Screw drivers, Socket set, Wrench set
Briggs& Stratton motor 190cc on craftsman brand mower
1. Removed rope pull mechanism cover air breather. several 5/16 hex screws
2. Removed springs from carburetor choke mechanism.
3. Removed fuel line and fuel tank used 3/8 bolt to plug fuel line. Drained carb into cup.
3. Removed engine cover to have access to a uto choke and carburetor.
4. Removed carburetor two bolts.
5. Removed carburetor float bowl,float and needle.
6. Removed existing rubber seat below needle. used e-part number kit 398188 (see e-part diagram).
7. Reassembled all parts. added Fresh Non-Ethanol gas. Runs as good as when it was new. No more surging. No other adjustments needed. Thanks e-replacement parts!
Did you find this story helpful?
Thank you for voting!

Carburetor had old gas clogging the fuel flow

Kevin from LONGMONT, Colorado

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Nutdriver, Pliers, Socket set, Wrench set
Parts Used:
796611, 797622, 694395, 398188, 398187
Pulled, rebuild and reinstalled the carburetor.
Did you find this story helpful?
Thank you for voting!

Float was not floating causing gas to leak out of carb

Charles from Haddam, Connecticut

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers, Socket set
Parts Used:
398187
Remove carb off engine disassemble carb remove bad float & needle install new float & needle reassemble carb & install on engine
Did you find this story helpful?
Thank you for voting!

Water in carb and float cracked most likely froze over winter

MIKE from NEWBERLIN, Wisconsin

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Pliers, Socket set
Parts Used:
498260, 398187
Disassemble carb and reinstall with new parts
Did you find this story helpful?
Thank you for voting!

Leaked gas

John from Round Rock, Texas

0 of 1 people found this instruction helpful.
Difficulty Level:
Difficult
Total Repair Time:
1- 2 hours
Tools:
Pliers, Screw drivers, Socket set
Parts Used:
398188, 398187
1, Replaced bowl and gas line. Still leaked.
2. Replaced float and needle/Seat. Still leaked.
3. Re-seated the seat with more force. Smaller leak.
4. Re-seated the seat with More Force. Fixed.
Did you find this story helpful?
Thank you for voting!
  • 1

Model Cross Reference

This part works with the following models:
ERP Number: ERP8961149
Manufacturer Part Number: 398187
Brand Model Number Description
Briggs and Stratton 01050-0 Pressure Washer - Briggs & Stratton Pressure Washer Model 01050-0 (010500, 01050 0) Parts
Briggs and Stratton 01052-0 Pressure Washer - Briggs & Stratton Pressure Washer Model 01052-0 (010520, 01052 0) Parts
Briggs and Stratton 01052-1 Pressure Washer - Briggs & Stratton Pressure Washer Model 01052-1 (010521, 01052 1) Parts
Briggs and Stratton 01053-0 Pressure Washer - Briggs & Stratton Pressure Washer Model 01053-0 (010530, 01053 0) Parts
Briggs and Stratton 01133-0 Generator - Briggs & Stratton Generator Model 01133-0 (011330, 01133 0) Parts
Briggs and Stratton 01282-0 Pressure Washer - Briggs & Stratton Pressure Washer Model 01282-0 (012820, 01282 0) Parts
Briggs and Stratton 01433-0 Pressure Washer - Briggs & Stratton Pressure Washer Model 01433-0 (014330, 01433 0) Parts
Briggs and Stratton 01433-1 Pressure Washer - Briggs & Stratton Pressure Washer Model 01433-1 (014331, 01433 1) Parts
Briggs and Stratton 01433-2 Pressure Washer - Briggs & Stratton Pressure Washer Model 01433-2 (014332, 01433 2) Parts
Lawn Boy 0425A Lawn Mower - Lawn Boy Lawn Mower Model 0425A Parts
Lawn Boy 0427 Lawn Mower - Lawn Boy Lawn Mower Model 0427 Parts
Craftsman 0505-0-580741380 Pressure Washer - 0505-0 - 580.741380, 1,500 Psi (Rev 3 5/20/96) Craftsman
Briggs and Stratton 0647-0 Generator - 2,000 Watt Portable Generator
Craftsman 0647-0-580327700 Generator - 0647-0 - 580.327700, 2,000 Watt Craftsman
Cub Cadet 074R Lawn Mower - Cub Cadet Lawn Mower Model 074R/1989 Parts
Craftsman 0764-0-580762250 Pressure Washer - 0764-0 - 580.762250, 2,250 Psi Craftsman
Briggs and Stratton 0795-0 Pressure Washer - Briggs & Stratton Pressure Washer Model 0795-0 (07950, 0795 0) Parts
Craftsman 0795-0-580677220 Pressure Washer - 0795-0 - 580.677220, 2,250 Psi Craftsman
Briggs and Stratton 083412-0101-01 Engine - Engine
Briggs and Stratton 083412-0105-01 Engine - Engine
Briggs and Stratton 083412-0105-02 Engine - Engine
Briggs and Stratton 083412-0105-03 Engine - Engine
Briggs and Stratton 083412-0105-04 Engine - Engine
Briggs and Stratton 083412-0106-01 Engine - Engine
Briggs and Stratton 090702-0015-01 Engine - Engine
Briggs and Stratton 090702-0025-01 Engine - Engine
Briggs and Stratton 090702-0026-01 Engine - Engine
Briggs and Stratton 090702-0030-01 Engine - Engine
Briggs and Stratton 090702-0100-01 Engine - Engine
Briggs and Stratton 090702-0103-01 Engine - Engine