Part Location Diagram of 398188 Briggs and Stratton Kit-needle/seat
See part A134 in the diagram
( Grid squares measure 1x1 inch )

Kit-needle/seat 398188

Manufactured by:
Briggs and Stratton
ERP Number:
ERP8963322
Part Number:
398188
Original Equipment Manufacturer ?
  Works with your model  16403!
In Stock
Delivers in 3-5 Business Days!

A Bit Difficult 

30 - 60 mins 

(27 rated repairs) ?
  Works with your model   16403!

Product Description

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Genuine manufacturer approved carburetor needle valve for lawn and garden equipment engines. This item includes the seat. The needle valve opens and closes to control the flow of fuel into the carburetor. Make sure to disconnect the spark plug wire and drain all gasoline from the carburetor and fuel tank before starting a repair.

Frequently Purchased Together

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Troubleshooting

This part fixes the following symptoms:
  • Will Not Start
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# 398188 replaces these:
281144, 281178, 398188, T398188,

Customer Part Reviews

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4.9
Average Rating (out of 5):
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★★★★★
(14 Reviews)
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Questions & Answers

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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.

A Bit Difficult 

30 - 60 mins 

(27 rated repairs) ?
  • 1
  • 2
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Sorry, we couldn't find any existing installation instruction that matched.

The ethanol gas damage old needle seat..

Paul from Dodge City, Kansas

24 of 24 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Pliers, Screw drivers, Socket set
Parts Used:
398188
Remove carburetor. Remove float bowl and float. Use crochet hook to remove old seat, use the flat end of a drill bit to set new seat. Reassemble carburetor, and install on engine..
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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.
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Float needle seat washer failed from old age.

Theron from San Angelo, Texas

9 of 9 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
Less than 15 mins
Tools:
Nutdriver, Screw drivers
Parts Used:
398188
Old float seat swelled up and crumbled, carefully removed all old pieces with a small stiff wire.
After making sure new seat was correctly oriented and centered in hole, I pressed it in with the blunt end of a drill bit that was almost as big as the hole. Then reassembled carb and put it back on the mower.
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Lawn mower would start and die almost immediately afterwards

Martin from Rockville, Maryland

7 of 7 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers, Socket set
Parts Used:
398188
1. Removed carburetor from engine.
2. Removed float bowl cover, float, main jet and needle.
3. Removed plastic seat from carburetor body by inserting a small drill bit into it and levering it out.
4. Inserted new plastic seat into carburetor body. Used same drill bit to guide it into place and firmly seat it.
5. I nstalled needle valve and float and checked for correct operation by inverting carburetor and making sure that float fully closed (float is horizontal).
6. Reassembled carburetor and installed it back on engine.
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Rebuild Carburetor

douglas from cedar rapids, Iowa

5 of 5 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Pliers, Screw drivers, Socket set, Wrench set
Parts Used:
692046, 796611, 398188
Took apart this carb. several times, had to break down and order a new needle and seat and new gaskets, got this power washer to run finally, it was given to Me and has been sitting for years.
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Would not run

Jack from Amboy, Washington

3 of 3 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Pliers, Wrench set
Parts Used:
796611, 493869, 398188
1. Removed and disassembled carburetor
2, Determined main jet damaged
3. Ordered required (obsolete) parts from eReplacements
4. Installed replacement parts
5. Re-installed carburetor
6. Started engine and mowed lawn.
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The seat for the needle was in up side down

Michael from Detroit, Michigan

2 of 2 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Screw drivers, Socket set
Parts Used:
693981, 398188
I took off the air cleaner and the float bowl, removed the float and needle. looked up the hole with a mirror and flash light and saw the seats groved edge. stuck a long screw in the seat hole and pulled it out. sprayed with carburator cleaner and installed the new seat with the groved edge facing away from the float. installed the needl e and bowl gasket. forgot to get bottom gasket so I used the old one. filled with gass and checked for leakes. started on first pull. thats it, MIKE
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Clogged carburetor.

Russell from Maryville, Tennessee

2 of 2 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Nutdriver, Socket set
Parts Used:
796611, 694395, 398188
Took off the housing and air cleaner assembly. Disconnected the fuel lines and throttle cable. Took apart the carburetor and used carb cleaner to clean out the old gas. Put the carburetor back together, and reassembled the motor.
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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
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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
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Model Cross Reference

This part works with the following models:
ERP Number: ERP8963322
Manufacturer Part Number: 398188
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
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