Models > 445877-0502-B1

445877-0502-B1 Briggs and Stratton Engine - Overview

Sections of the 445877-0502-B1

[Viewing 8 of 8]
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Aluminum Push Rod – Part Number: 690982
Aluminum Push Rod
PartSelect #: PS9073139
Manufacturer #: 690982
This is a replacement push rod for your lawn tractor engine. It is made of aluminum and is the push rod used for the exhaust valve. Occasionally, the push rod in your engine can become damaged, and wi...
$8.27
  Special Order
Rod-Push (Steel) – Part Number: 690981
Rod-Push (Steel)
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(1)
PartSelect #: PS9062983
Manufacturer #: 690981
This is a replacement steel push rod for your lawn tractor engine. The engine will have two push rods; one made of steel, and one made of aluminum. This part is made of steel and is approximately 6 in...
$6.89
  Special Order
Gasket-Rocker Cover – Part Number: 690971
Gasket-Rocker Cover
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★★★★★
(1)
PartSelect #: PS9062980
Manufacturer #: 690971
$7.65
  In Stock
Seal--Oil (PTO Side) – Part Number: 795387
Seal--Oil (PTO Side)
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(2)
PartSelect #: PS9151828
Manufacturer #: 795387
This OEM Seal-Oil (PTO Side), also called the Oil Seal, is a Black, Nitrile Rubber, 2/14 O.D., individually sold part which is installed using a Seal Puller. Customers rate the installation difficulty...
$7.88
  In Stock
Gasket-CylinderHead – Part Number: 693997
Gasket-CylinderHead
PartSelect #: PS9067184
Manufacturer #: 693997
This is a replacement cylinder head gasket for your small engine. The gasket is approximately 5 inches in length and 5 inches in width at its longest and widest points. The gasket creates a seal, and ...
$26.91
  In Stock
Plug-Spark – Part Number: 491055S
Plug-Spark
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(2)
PartSelect #: PS9281094
Manufacturer #: 491055S
$4.99
  In Stock
Seal,Oil – Part Number: 391086S
Seal,Oil
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(1)
PartSelect #: PS9277860
Manufacturer #: 391086S
The Oil Seal is a manufacturer-approved rubber part which provides a seal between the crankcase and crankshaft by attaching around the axle shaft on the crankhouse housing. Installation is rated as "M...
$6.59
  In Stock
Seal-O Ring – Part Number: 691917
Seal-O Ring
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(1)
PartSelect #: PS9294749
Manufacturer #: 691917
The Seal-O Ring, also known as the gasket, is red in color, made of rubber, and is an OEM part that requires some skill to replace. This part is designed to create a seal between the carburator and ma...
$4.99
  In Stock
Key-Flywheel – Part Number: 222698S
Key-Flywheel
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(1)
PartSelect #: PS8925657
Manufacturer #: 222698S
$4.99
  In Stock
Oil Filter – Part Number: 696854
Oil Filter
PartSelect #: PS9065087
Manufacturer #: 696854
$14.38
  In Stock
Pump-Fuel – Part Number: 808656
Pump-Fuel
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(1)
PartSelect #: PS9154486
Manufacturer #: 808656
$113.45
  On Order
Crankcase Gasket With Bolts – Part Number: 594195
Crankcase Gasket With Bolts
PartSelect #: PS11829358
Manufacturer #: 594195
This genuine crankcase gasket is used on small lawn and garden engines. Its purpose is to make an air tight seal so that no air/oil leakage occurs. Over time this gasket will deteriorate and will need...
$37.66
  In Stock

Questions And Answers for 445877-0502-B1

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Common Symptoms of the 445877-0502-B1

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Engine misfires
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Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
governor not working
Had to pull the engine off the rider mower. Drained the oil took shield off the flywheel. Set it upside down on a 5 gal bucket. Took a 7/16 hand wrench to remove governor lever from bottom of engine. Left it in its location. Pulled 10 1/2 " bolts. Split engine case. Found the old governor had broke into pieces. Had to use a magnet to remove all the pieces. Removed the small clip and removed gear. Lubed shaft slid new on put new clip on. Lined governor weights with center piece tapped it in place very lightly. Cleaned gasket flanges pulled the shaft seal. Used the old seal as a seal driver. When putting the cover back on make sure the seal dont roll out. Take a mini screwdriver and tuck it in around shaft. Put bolts back in and tighten like instructions
Parts Used:
Crankcase Gasket With Bolts Seal--Oil (PTO Side) Gear-Governor
  • rodney from MUSCATINE, IA
  • Difficulty Level:
    A Bit Difficult
  • Total Repair Time:
    More than 2 hours
  • Tools:
    Screw drivers, Socket set
12 of 18 people found this instruction helpful.
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Lost my main jets while cleaning old gas from carb.
I removed the fan shroud, the carb/manifold as an assembly,turned the carb upside down and removed the fuel bowl. I replaced only one jet. Not until this moment did I discover their were two jets in this nikki carb. I now have a second jet ordered and will install it Friday,hopefully. These jets are two different part numbers as one is a left jet and the other is a right one. Be careful when opening the fuel bowl as these jets are held in their bores by small O-rings, and nothing else. The brigg's and Stratton part numbers are 791501 for the left jet and 791502 for the right.
Parts Used:
Jet--Main (Standard)
  • dan from EASTPORT, ME
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    15 - 30 mins
  • Tools:
    Pliers, Screw drivers, Socket set, Wrench set
8 of 12 people found this instruction helpful.
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valve problem causing pushrod damage
pinged valve guide reinstalled head with new gasket inserted rods adjusted valve 15 min. later mowing lawn first time doin such repair note used magnet to pull old rod inside engine to drain left in rotated engine maling sure no parts broken started up and away i went c how long it lasts mower had over6500 hrs.. on it
Parts Used:
Aluminum Push Rod Gasket-CylinderHead Gasket-Exhaust Rod-Push (Steel)
  • george from HALLWOOD, VA
  • Difficulty Level:
    Easy
  • Total Repair Time:
    1- 2 hours
  • Tools:
    Nutdriver, Screw drivers, Socket set, Wrench set
7 of 15 people found this instruction helpful.
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