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Breather Gasket

Part Number: 27803S
Briggs and StrattonToroMurray
Availability: 25+ in stock
Price: $2.99
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*This part replaces obsolete part #: 49-112 and 27803.

Product Information
Manufacturer: Briggs and Stratton, Toro, Murray
Product Number: 27803S
Classification: Part
Weight: 0.01 lbs.
Shipping: Ships Worldwide
Description:
This is a high-quality manufacturer-sourced part which is made for use with Briggs and Stratton engines commonly installed on lawn and garden equipment. It helps to distribute the pressure evenly and provide a tight seal for the breather. Over time it may become brittle and begin to crack eventually requiring a replacement. For the proper application please refer to the appropriate diagrams of your model. This high-quality part is made of durable composite material and is sold individually. You will need a screwdriver and a wrench set to remove and reattach the breather.
Compatibility

This part is compatible with the following machines:

Briggs and Stratton
Toro
Expand the 150+ compatible machines
Products Compatibility

This item works with the following types of products:

  • • Engine
  • • Generator
  • • Lawn Mower
  • • Lawn Tractor
Questions & Answers

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Repair Instructions: Submitted by Customers Like You
1 of 1 people found this instruction helpful
Tool Type:
Lawn Tractor
Parts Used:
Breather Gasket - 27803S
Gasket-Intake Elbow Mounting - 498869
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Nutdriver
Intake and breather gaskets bad in B&S 11 hp lawn tractor
Stem of intake valve chewed up, and would no longer hold valve spring retainer for any length of time. After replacement and reassembley, the intake gasket was found to be broken, and breather gasket was also leaking oil. I had to order the gaskets. When they arrived, installation was easy.Two bolts through the intake and gasket, attached the assembly to the block using a screwdriver. The breather gasket was even easier, scraping off the old breather gasket with a razor blade, and replacing with the new gasket. A 5/16 nutdriver tightened the two holding screws for the breather cover, and that was it. All done!
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Tool Type:
Lawn Tractor
Parts Used:
Float Bowl - 495933
Tube-Breather - 692253
Breather Gasket - 27803S
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Pliers, Socket set
carburetor leaked.
replaced carburetor.
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Tool Type:
Lawn Mower
Parts Used:
Breather Gasket - 27803S
Gasket-Crankcase - 692287
Repair Difficulty:
Medium
Time Spent Repairing:
More than 2 hours
Tools Used:
Screwdriver, Socket set, Scraper for old gasket
Leaking oil
Motor must be removed from frame, turned upside down to remove sump pan, clean parts and replace gasket, then remove crankcase cover, four bolts, clean all surfaces and replace gasket, breather gasket is very easy, two bolts.
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Tool Type:
Lawn Tractor
Parts Used:
Breather Gasket - 27803S
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Socket set, 8 in extension
Oil leaking from breather .
When engine was cool , removed the air cleaner , to allow ease of access to breather covers .
Removed 2 small screws from each breather .
Removed breather assembly,
Cleaned all mating surfaces .
Place new gaskets onto the breather assembly .
Aligned new gasket with screw holes and tighten .
Replace air cleaner assembly,check oil level and add if needed
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Tool Type:
Lawn Mower
Parts Used:
Breather Gasket - 27803S
Breather Assembly #1 - 495755
Repair Difficulty:
Easy
Time Spent Repairing:
30-60 minutes
Tools Used:
Screwdriver, Pliers, Nutdriver
breather assembly was bad
1. Remove air breather.
2. Remove intake manifold.
3. Remove breather assembly.
4. Install breather assembly, intake manifold, and air breather in that order.
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Tool Type:
Lawn Tractor
Parts Used:
Exhaust Gasket - 692236
Inlet Seat - 690577
Float Valve Needle - 231855S
Float Bowl Gasket - 281165S
Gasket-Intake - 272554S
Breather Gasket - 27803S
Repair Difficulty:
Medium
Time Spent Repairing:
1-2 hours
Tools Used:
Screwdriver, Pliers, Socket set, Wrench Set, tap to remove seat in carb
carburetor leaking gas into crankcase
remove carburetor and float bowl and float and needle valve tap inside of seat in carburetor with a 1/4 twenty tap then threaded bolt in and then pulled out old seat and then tapped in new seat with a punch until it hits home at bottom reassemble carburetor and put back on engine
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Tool Type:
Lawn Tractor
Parts Used:
Gasket-Crankcase (.015 Thick) - 692226
Ring Set (Standard) - 696403
Breather Gasket - 27803S
Repair Difficulty:
Medium
Time Spent Repairing:
1-2 hours
Tools Used:
Socket set, Ring compressor, rubber mallet
Seized, oil leak, no compression
1. Took off most parts (carb, starter, exhaust,ext)
2. Found socket to fit the flywheel nut and a breaker bar and worked to unseize it
3. Once I unseized it I found no compression from bad rings
4. I found the manual for my model engine to find the part number and bought the parts
5. Took the crank case cover off and took the piston out
6. Put the new pistons rings on and clocked them
7. Oiled the piston and ring compressor, squeezed the rings and made sure the compressor was flush with the head and tapped the piston in
8. Scrapped the old gaskets off and replaced them
9. Put the other parts back on, put new oil in and changed the battery
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Tool Type:
Lawn Tractor
Parts Used:
Spring--Governor Link - 691842
Float Bowl Gasket - 281165S
Breather Gasket - 27803S
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Wrench Set
Leaking gas and oil and broken spring
Replaced parts that was missing or broken.
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Tool Type:
Lawn Tractor
Parts Used:
Breather Gasket - 27803S
Oil Seal - 291675S
Gasket-Crankcase (.015" Thick) (Standard) - 692292
Repair Difficulty:
Medium
Time Spent Repairing:
More than 2 hours
Tools Used:
Screwdriver, Pliers, Socket set, Wrench Set
Bad oil leak coming from sump pan
Removed engine from tractor
Watched a few YouTube videos on how to dismantle engine
Unbolted sump pan and pulled apart carefully
Cleaned gasket material off with scraper and sandpaper
Used gasket sealer with gasket to replace old gasket
Reassembled and torqued to 225 inch lbs the bolts in a cross pattern

Gotchas: Be careful of the governor assembly
Oil seal is a challenge to remove
During reassembly turn the crank to line up the governor gear to the cam sprocket
Be sure the timing marks line up between crank and cam gears




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    Product Information
    Manufacturer: Briggs and Stratton, Toro, Murray
    Product Number: 27803S
    Classification: Part
    Weight: 0.01 lbs.
    Shipping: Ships Worldwide
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