Troubleshooting; Specifications; Warranty - Briggs & Stratton 400000 Operator's Manual

Engine Oil
While the engine is still warm, change the engine oil. Refer to Change the Engine Oil
section.

Troubleshooting

Assistance
For assistance, contact your local dealer or go to BRIGGSandSTRATTON.COM or call
1-800-444-7774 (in USA).

Specifications

Specifications and Service Parts
MODEL: 400000
Displacement
Bore
Stroke
Oil Capacity
Spark Plug Gap
Spark Plug Torque
Armature Air Gap
Intake Valve Clearance
Exhaust Valve Clearance
MODEL: 440000
Displacement
Bore
Stroke
Oil Capacity
Spark Plug Gap
Spark Plug Torque
Armature Air Gap
Intake Valve Clearance
Exhaust Valve Clearance
MODEL: 490000
Displacement
Bore
Stroke
Oil Capacity
Spark Plug Gap
Spark Plug Torque
Armature Air Gap
Intake Valve Clearance
Exhaust Valve Clearance
Engine power will decrease 3.5% for each 1,000 feet (300 meters) above sea level
and 1% for each 10°F (5.6°C) above 77°F (25°C). The engine will operate satisfactorily
at an angle up to 15°. Refer to the equipment Operator's Manual for safe permitted
operating limits on slopes.
MODELS: 400000, 440000, 490000
Service Part
Air Filter, Paper (See Figure 16)
Air Filter, Pre-cleaner (See Figure 16)
Air Filter, Paper (See Figure 18)
Air Filter, Pre-cleaner (if equipped) (See
Figure 18)
Air Filter, Paper (See Figure 17)
Air Filter, Pre-cleaner (See Figure 17)
Oil - SAE 30
Oil Filter, Standard - Black
Oil Filter, High Efficiency - Yellow
10
40.03 ci ( 656 cc)
2.970 in (75,43 mm)
2.890 in (73,41 mm)
62 - 64 oz (1,8 - 1,9 L)
.030 in (,76 mm)
180 lb-in (180 Nm)
.008 - .012 in (,20 - ,30 mm)
.004 - .006 in (,10 - ,15 mm)
.004 - .006 in (,10 - ,15 mm)
44.18 ci ( 724 cc)
3.120 in (79,24 mm)
2.890 in (73,41 mm)
62 - 64 oz (1,8 - 1,9 L)
.030 in (,76 mm)
180 lb-in (180 Nm)
.008 - .012 in (,20 - ,30 mm)
.004 - .006 in (,10 - ,15 mm)
.004 - .006 in (,10 - ,15 mm)
49.42 ci ( 810 cc)
3.300 in (83,81 mm)
2.890 in (73,41 mm)
66 - 68 oz (1,9 - 2,0 L)
.030 in (,76 mm)
180 lb-in (180 Nm)
.008 - .012 in (,20 - ,30 mm)
.004 - .006 in (,10 - ,15 mm)
.004 - .006 in (,10 - ,15 mm)
Part Number
499486
273638
591334
797704
792105
792303
100028
492932S
696854
MODELS: 400000, 440000, 490000
Oil Filter, High Efficiency - Orange
Fuel Filter
Resistor Spark Plug
Long Life Platinum Spark Plug
Spark Plug Wrench
Spark Tester
We recommend that you see a Briggs & Stratton Authorized Dealer for all maintenance
and servicing of the engine and engine parts.
Power Ratings
The gross power rating for individual gasoline engine models is labeled in accordance
with SAE (Society of Automotive Engineers) code J1940 Small Engine Power & Torque
Rating Procedure, and is rated in accordance with SAE J1995. Torque values are
derived at 2600 RPM for those engines with "rpm" called out on the label and 3060 RPM
for all others; horsepower values are derived at 3600 RPM. The gross power curves
can be viewed at www.BRIGGSandSTRATTON.COM. Net power values are taken with
exhaust and air cleaner installed whereas gross power values are collected without
these attachments. Actual gross engine power will be higher than net engine power and
is affected by, among other things, ambient operating conditions and engine-to-engine
variability. Given the wide array of products on which engines are placed, the gasoline
engine may not develop the rated gross power when used in a given piece of power
equipment. This difference is due to a variety of factors including, but not limited to, the
variety of engine components (air cleaner, exhaust, charging, cooling, carburetor, fuel
pump, etc.), application limitations, ambient operating conditions (temperature, humidity,
altitude), and engine-to-engine variability. Due to manufacturing and capacity limitations,
Briggs & Stratton may substitute an engine of higher rated power for this engine.

Warranty

®
Briggs & Stratton Engine Warranty
Effective August 2021
Limited Warranty
Briggs & Stratton warrants that, during the warranty period specified below, it will
repair or replace, free of charge, with a new, reconditioned or re-manufactured part,
at the sole discretion of Briggs & Stratton, any part that is defective in material or
workmanship or both. Transportation charges on product submitted for repair or
replacement under this warranty must be borne by purchaser. This warranty is effective
for and is subject to the time periods and conditions stated below. For warranty
service, find the nearest Authorized Service Dealer in our dealer locator map at
BRIGGSandSTRATTON.COM. The purchaser must contact the Authorized Service
Dealer, and then make the product available to the Authorized Service Dealer for
inspection and testing.
There is no other express warranty. Implied warranties, including those of
merchantability and fitness for a particular purpose, are limited to one year
from purchase, or to the extent permitted by law. All other implied warranties
are excluded. Liability for incidental or consequential damages are excluded
to the extent exclusion is permitted by law. Some states or countries do not allow
limitations on how long an implied warranty lasts, and some states or countries do not
allow the exclusion or limitation of incidental or consequential damages, so the above
limitation and exclusion may not apply to you. This warranty gives you specific legal
rights and you may also have other rights which vary from state to state and country to
*
country .
Standard Warranty Terms
® 3
Vanguard ; Commercial Series
Consumer Use - 36 months
Commercial Use - 36 months
XR Series
Consumer Use - 24 months
Commercial Use - 24 months
All Other Engines Featuring Dura-Bore™ Cast Iron Sleeve
Consumer Use - 24 months
Commercial Use - 12 months
All Other Engines
Consumer Use - 24 months
Commercial Use - 3 months
1
These are our standard warranty terms, but occasionally there may be additional
warranty coverage that was not determined at time of publication. For a listing of
current warranty terms for your engine, go to BRIGGSandSTRATTON.COM or contact
your Briggs & Stratton Authorized Service Dealer.
798576
84001895
491055S
5066K
19576S
84003327
1, 2, 3
BRIGGSandSTRATTON.COM