Specifications
Specifications and Service Parts
MODELS: 44J677, 44X977
Displacement
49.42 ci (810 cc)
Bore
3.300 in (83,81 mm)
Stroke
2.890 in (73,41 mm)
Oil Capacity
66 - 68 oz (1,9 - 2 L)
Spark Plug Gap
.030 in (,76 mm)
Spark Plug Torque
180 lb-in (180 Nm)
Armature Air Gap
.008 - .012 in (,20 - ,30 mm)
Intake Valve Clearance
.004 - .006 in (,10 - ,15 mm)
Exhaust Valve Clearance
.004 - .006 in (,10 - ,15 mm)
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: 44J677, 44X977
Service Part
Part Number
Air Filter, Paper (See Figure 14)
796031
Air Filter, Pre-Cleaner (See Figure 14)
797704
Oil - SAE 30
100028
Oil Filter
795890
Resistor Spark Plug / EMS
792015
Spark Plug Wrench
19576S
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 Emissions Warranty
California, U.S. EPA, and Briggs & Stratton, LLC Emissions Control Warranty -
Your Warranty Rights and Obligations
For Briggs & Stratton Engine Models with "F" Trim Designation (Model-Type-
Trim Representation xxxxxx xxxx Fx)
The California Air Resources Board, U.S. EPA, and Briggs & Stratton (B&S) are
pleased to explain the exhaust and evaporative emissions (“emissions”) control system
warranty on your 2021-2023 engine. In California, new equipment that use small off-
road engines must be designed, built, and equipped to meet the State's stringent anti-
smog standards. B&S must warrant the emissions control system on your engine/
equipment for the periods of time listed below provided there has been no abuse,
neglect or improper maintenance of your small off-road engine or equipment leading to
the failure of the emissions control system.
Your emissions control system may include parts such as the carburetor or fuel-
injection system, the ignition system, catalytic converter, fuel tanks, fuel lines (for liquid
fuel and fuel vapors), fuel caps, valves, canisters, filters, clamps and other associated
components. Also included may be hoses, belts, connectors, and other emission-
related assemblies.
Where a warrantable condition exists, B&S will repair your engine/equipment at no cost
to you including diagnosis, parts, and labor.
Manufacturer's Warranty Coverage:
The exhaust and evaporative emissions control system on your engine/equipment
is warranted for two years. If any evaporative emission-related part on your engine/
equipment is defective, the part will be repaired or replaced by B&S.
Owner’s Warranty Responsibilities:
•
As the engine/equipment owner, you are responsible for the performance of
the required maintenance listed in your owner’s manual. B&S recommends
that you retain all receipts covering maintenance on your engine, but B&S
cannot deny warranty coverage solely for the lack of receipts or for your failure
to ensure the performance of all scheduled maintenance.
•
As the engine/equipment owner, you should however be aware that B&S may
deny you warranty coverage if your engine/equipment or a part has failed due
to abuse, neglect, or improper maintenance or unapproved modifications.
•
You are responsible for presenting your engine/equipment to a B&S
distribution center or service center as soon as the problem exists. The
warranty repairs shall be completed in a reasonable amount of time, not
to exceed 30 days. If you have a question regarding your warranty rights
and responsibilities, you should contact B&S at 1-800-444-7774 (in USA) or
BRIGGSandSTRATTON.COM.
Briggs & Stratton Emissions Control Warranty Provisions
The following are specific provisions relative to your Emissions Control Warranty
Coverage. It is in addition to the B&S engine warranty for non-regulated engines found
in the Operator’s Manual.
1. Warranted Emissions Parts
Coverage under this warranty extends only to the parts listed below (the emissions
control systems parts) to the extent these parts were present on the B&S engine
and/or B&S supplied fuel system.
a. Fuel Metering System
• Cold start enrichment system (soft choke)
• Carburetor or fuel injection system
• Oxygen sensor
• Electronic control unit
• Fuel pump module
• Fuel line (for liquid fuel and fuel vapors), fuel line fittings, clamps
• Fuel tank, cap and tether
• Carbon canister and mounting bracket
• Pressure relief valves
• Liquid/Vapor separator
b. Air Induction System
• Air cleaner
• Intake manifold
• Purge and vent line
c. Ignition System
• Spark plug(s)
• Magneto ignition system
d. Catalyst System
• Catalytic converter
• Exhaust manifold
• Air injection system or pulse value
e. Miscellaneous Items Used in Above Systems
• Vacuum, temperature, position, time sensitive valves and switches
• Connectors and assemblies
• Electronic controls
10
Not for
Reproduction
