Briggs & Stratton 31L777-3136-G5 Vertical Engine

FREE SHIPPING - Briggs and Stratton 500cc 17.5 Gross HP Extended Life Engine with a 1" diameter by 3-5/32" Length Crankshaft, Keyway, and Tapped 7/16-20, Oil Pump W-Filter, Equipped with a 12 Volt Starter and a 9 amp DC Alternator, Model 31L777-3136-G5

Briggs & Stratton Vertical Engine
Item No. BS-31L777-3136-G5
Your Price! $115997
Shipping: Free
NNew In stock

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Key Product Info

Briggs & Stratton 31L777-3136-G5 vertical Professional Series engine is 500cc and puts out 17.5 HP (gross horsepower). This single cylinder engine has a 1" x 3-5/32" crankshaft and features a 12V electric starter with 9A alternator, a fuel pump, an oil pump with filter and a muffler. Briggs & Stratton Professional Series engines feature full pressure lubrication along with oil and fuel filters for a longer life with less maintenance. Chrome plated valves and advanced air filtration provide maximum protection. This engine is for use on lawn mowers. Buyer protection package provides a two-year limited consumer engine warranty. 50-State CARB Compliant. All engines purchased from us ship for free and are foam packed for added protection during transit.

Weight: 81.0 lbs.

Features & Benefits

  • Dura-Bore cast iron cylinder sleeve for extended life
  • Float carburetor for consistent easy starting
  • Maintenance-free Magnetron electronic ignition for quick, dependable starts
  • Advanced debris management system with a dual seal, cartridge-style air filter provides maximum protection and extends engine life
  • Overhead valve design for cooler operation and longer valve life
  • Patented linear balancing system provides smoother performance
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Key Specs

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Warranty 2 Years Consumer/ 1 Year Commercial
Displacement Range 391cc - 600cc
Engine Brand Briggs & Stratton
Crankshaft Diameter 1"
Crankshaft Length 3-5/32"
Crankshaft End Tapped Size 7/16-20
Crankshaft Keyway Width 1/4"
Air Cleaner Type Cartridge with Pre Filter
Throttle Control Remote
Starter Type Electric
PTO Height N/A
Max RPM 3300
Oil Cooler No
Carburetor Type Float
Valve Style Overhead
Recoil Starter Position N/A
Bearing Type Plain
Displacement 500cc
Ignition System Electronic
Lubrication System Pressure
Oil Capacity 48
Muffler Performance Quiet
Flywheel Heavy
Fuel System Gasoline
Governor System Mechanical
Gear Reduction No
Charging System 9 Amp
Choke Control Choke-A-matic
Cooling System Air
Type Small Engines
Fuel Pump Yes
Auxiliary PTO No
Compression Release Yes
MFG Rated Output 17.50 Gross HP
CPSC Compliant No
Low Oil Shutdown No
Low Oil Alert/Shutdown No
Extended Recoil Rope No
Oil Filter Yes
Bolt Circle (in.) 10
Crankshaft Type Straight
Oil Pump Yes
Fuel Filter Yes
Control Box No
Cylinders (quantity) 1
Cylinder Bore Type Cast Iron Sleeve
Bore x Stroke 3.56" x 3.06"
Crankshaft Style Vertical
For Use in California Yes
Crankshaft Rotation Direction (from PTO Shaft Side) Counterclockwise
Fuel Tank Capacity None
Color Black

Cross Reference Chart

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BS-31L777-3136-G5 REPLACES THESE MODELS

31A777-0118-B1 31L777-0036 31L777-0136 31L777-3136 31L777-0036-E1 31L777-0036 31L777-0136-G1 31L777-0136
31L777-3136-G5 28Q777-0536-E1 28CH77-0036-E1 28Q777-0536 28CH77-0036 31L777-0036 31L777-0036-E1 31L777-0136-G1
31L777-0136-G1 
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Shipping & Delivery

  • FREE Shipping on orders over $100 (just in the lower 48 States)
  • FREE Residential & Liftgate Service
  • Shipments Received in 1- 6 Business Days
  • If you live in Alaska or Hawaii we want you business! Please call us and we will provide you a competitive shipping quote
  • Orders with WI shipping address charged sales tax

ORDERS OVER $100
All orders that total $100 or higher qualify for free ground or free freight shipping (exceptions described below).

ORDERS UNDER $100
Orders that total less than $100 will have a fixed shipping rate of $8.87 per order.

SHIPPING CARRIERS
At Equipatron our primary carriers are UPS Ground and FedEx Ground, which we have found to be the most reliable residential carriers.

WHEN YOUR ORDER SHIPS & TRACKING
When your order ships we will notify you via email. Included in your email will be a tracking number for your shipment. We encourage you to track your shipment online or on the phone with UPS and FedEx. Be sure to contact us if anything seems unusual with the progress of the shipment. You can also track your packages via Order Status on Equipatron.com.

WHEN YOUR SHIPMENT ARRIVES
Depending on how close you are to the shipping warehouse, your item will arrive in 1 to 6 business days after it leaves the warehouse.  If you want an item left at your doorstep, the best thing to do is leave a note on your door asking the driver to leave your package with "No Signature Required." Be sure to include your name and tracking number on the note-----but we don’t recommend this. The most important thing to remember about truck freight is that you should inspect the package at the time of delivery. If the box has any damage, or if there is any reason for you to be at all concerned about potential damage, please write "PRODUCT DAMAGED" clearly on the sheet that they ask you to sign. This simply insures that if there is any damage, it will be easy to take care of the problem.

ITEMS OVER 150 POUNDS
If you are ordering a large item, around 150 pounds or more, we are providing FREE Liftgate Service to your residence (with the exception of certain designated areas which require a surcharge such as greater New York City). Alternatively, most of our competitors will charge you extra $50 - $100 for this service. Shortly after you receive your tracking information via email, a representative from the designated freight carrier will call you to schedule a convenient delivery time.

Extended Protection Plans

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If it breaks, we'll fix it

Keep your engines and equipment running like new for years to come with Guaranteed Protection. Enjoy the peace of mind that comes from having a plan that delivers exactly what it promises:

  • Extended Protection – extends your product’s manufacturer’s warranty up to 3 years
  • Worry-Free Coverage – no deductibles or hidden fees
  • Replacement Guarantee – If we can't fix it, we'll provide a replacement
  • Commercial Use – Purchase a commercial use plan and your product will be covered even when used in commercial settings
  • Contract Delivery – If purchased, your protection plan contract will be emailed to you within 30 days of purchase

Purchase a plan today and rest assured that you’re protected against the high cost of repairs or replacement.

Terms & Conditions

1 YR Consumer Protection Plan

1 YR Consumer Protection Plan

Extend Your Warranty Coverage with a Product Protection Plan. Purchase 1 Year of extended coverage and you will be protected against the high cost of repairs or product replacement.

2 YR Consumer Protection Plan

2 YR Consumer Protection Plan

Extend Your Warranty Coverage with a Product Protection Plan. Purchase 2 Years of extended coverage and you will be protected against the high cost of repairs or product replacement.

3 YR Consumer Protection Plan

3 YR Consumer Protection Plan

Extend Your Warranty Coverage with a Product Protection Plan. Purchase 3 Years of extended coverage and you will be protected against the high cost of repairs or product replacement.

1 YR Commercial Protection Plan

1 YR Commercial Protection Plan

Extend Your Warranty Coverage with a Product Protection Plan. Purchase 1 Year of extended coverage and you will be protected against the high cost of repairs or product replacement.

2 YR Commercial Protection Plan

2 YR Commercial Protection Plan

Extend Your Warranty Coverage with a Product Protection Plan. Purchase 2 Years of extended coverage and you will be protected against the high cost of repairs or product replacement.

3 YR Commercial Protection Plan

3 YR Commercial Protection Plan

Extend Your Warranty Coverage with a Product Protection Plan. Purchase 3 Years of extended coverage and you will be protected against the high cost of repairs or product replacement.