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Intek™ Series (Single Cylinder)

Intek™ Series (Single Cylinder)

Efficient and Durable Performance

Reliability and convenience combined like never before, these engines deliver easy starting and superior performance.

10.5 - 19.0

Gross HP

344 - 540cc

Displacement

1

No. of Cylinders

48

Oil Capacity (oz)

Features

Made in the USA

Made in the USA of US and global parts.

ReadyStart® for Ride Technology

Automotive-style, no choke easy starting. Just turn the key or push the button and go.

Anti-Vibration System - AVS®

Provides a smoother ride and more comfort.

Advanced Debris Management System

Keeps the engine clean by deflecting and ejecting grass and debris for a longer engine life.

Full Pressure Lube System

Reduces component wear for longer engine life.

Specs

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Model Number
21R7
HP (gross) **
10.5
Engine Displacement (cc)
344
Number of Cylinders
Single
Engine Configuration
Vertical Shaft
OHV Engine
Yes
Length (in)
17.8
Width (in)
15.5
Height (in)
12.9
Weight (lbs)
66
Bore (in)
3.44
Stroke (in)
2.26
Engine Fuel
Gasoline
Fuel Tank Capacity (gal)
0.7 (optional)
Lubrication System
Pressure Lubrication
Oil Capacity (oz)
48
Oil Filter
Standard
Starter
Electric Start, Recoil Optional
Air Filter
Cartridge Air Cleaner with Advanced Debris Management
Muffler
Optional
Certified Power Rating
Model Number
21R8
HP (gross) **
11.5
Engine Displacement (cc)
344
Number of Cylinders
Single
Engine Configuration
Vertical Shaft
OHV Engine
Yes
Length (in)
17.8
Width (in)
15.5
Height (in)
12.9
Weight (lbs)
66
Bore (in)
3.44
Stroke (in)
2.26
Engine Fuel
Gasoline
Fuel Tank Capacity (gal)
0.7 (optional)
Lubrication System
Pressure Lubrication
Oil Capacity (oz)
48
Oil Filter
Standard
Starter
Electric Start, Recoil Optional
Air Filter
Cartridge Air Cleaner with Advanced Debris Management
Muffler
Optional
Certified Power Rating
Model Number
31R5
HP (gross) **
13.5
Engine Displacement (cc)
500
Number of Cylinders
Single
Engine Configuration
Vertical Shaft
OHV Engine
Yes
Length (in)
18.9
Width (in)
15.5
Height (in)
12.9
Weight (lbs)
77
Bore (in)
3.56
Stroke (in)
3.06
Engine Fuel
Gasoline
Fuel Tank Capacity (gal)
N/A
Lubrication System
Pressure Lubrication, Full Pressure Lubrication optional
Oil Capacity (oz)
48
Oil Filter
Standard
Starter
Electric Start
Air Filter
Cartridge Air Cleaner with Advanced Debris Management
Muffler
Optional
Certified Power Rating
Model Number
31R6
HP (gross) **
14.5
Engine Displacement (cc)
500
Number of Cylinders
Single
Engine Configuration
Vertical Shaft
OHV Engine
Yes
Length (in)
18.9
Width (in)
15.5
Height (in)
12.9
Weight (lbs)
77
Bore (in)
3.56
Stroke (in)
3.06
Engine Fuel
Gasoline
Fuel Tank Capacity (gal)
N/A
Lubrication System
Pressure Lubrication, Full Pressure Lubrication optional
Oil Capacity (oz)
48
Oil Filter
Standard
Starter
Electric Start
Air Filter
Cartridge Air Cleaner with Advanced Debris Management
Muffler
Optional
Certified Power Rating
Model Number
31R7
HP (gross) **
15.5
Engine Displacement (cc)
500
Number of Cylinders
Single
Engine Configuration
Vertical Shaft
OHV Engine
Yes
Length (in)
18.9
Width (in)
15.5
Height (in)
12.9
Weight (lbs)
77
Bore (in)
3.56
Stroke (in)
3.06
Engine Fuel
Gasoline
Fuel Tank Capacity (gal)
N/A
Lubrication System
Pressure Lubrication, Full Pressure Lubrication optional
Oil Capacity (oz)
48
Oil Filter
Standard
Starter
Electric Start
Air Filter
Cartridge Air Cleaner with Advanced Debris Management
Muffler
Optional
Certified Power Rating
Model Number
31R8
HP (gross) **
16.5
Engine Displacement (cc)
500
Number of Cylinders
Single
Engine Configuration
Vertical Shaft
OHV Engine
Yes
Length (in)
18.9
Width (in)
15.5
Height (in)
12.9
Weight (lbs)
77
Bore (in)
3.56
Stroke (in)
3.06
Engine Fuel
Gasoline
Fuel Tank Capacity (gal)
N/A
Lubrication System
Pressure Lubrication, Full Pressure Lubrication optional
Oil Capacity (oz)
48
Oil Filter
Standard
Starter
Electric Start
Air Filter
Cartridge Air Cleaner with Advanced Debris Management
Muffler
Optional
Certified Power Rating
Model Number
31R9
HP (gross) **
17.5
Engine Displacement (cc)
500
Number of Cylinders
Single
Engine Configuration
Vertical Shaft
OHV Engine
Yes
Length (in)
18.9
Width (in)
15.5
Height (in)
12.9
Weight (lbs)
77
Bore (in)
3.56
Stroke (in)
3.06
Engine Fuel
Gasoline
Fuel Tank Capacity (gal)
N/A
Lubrication System
Pressure Lubrication, Full Pressure Lubrication optional
Oil Capacity (oz)
48
Oil Filter
Standard
Starter
Electric Start
Air Filter
Cartridge Air Cleaner with Advanced Debris Management
Muffler
Optional
Certified Power Rating
Model Number
33R7
HP (gross) **
18.5
Engine Displacement (cc)
540
Number of Cylinders
Single
Engine Configuration
Vertical Shaft
OHV Engine
Yes
Length (in)
18.9
Width (in)
16.2
Height (in)
12.9
Weight (lbs)
77
Bore (in)
3.7
Stroke (in)
3.06
Engine Fuel
Gasoline
Fuel Tank Capacity (gal)
N/A
Lubrication System
Pressure Lubrication, Full Pressure Lubrication optional
Oil Capacity (oz)
48
Oil Filter
Standard
Starter
Electric Start
Air Filter
Cartridge Air Cleaner with Advanced Debris Management
Muffler
Optional
Certified Power Rating
Model Number
33R8
HP (gross) **
19.0
Engine Displacement (cc)
540
Number of Cylinders
Single
Engine Configuration
Vertical Shaft
OHV Engine
Yes
Length (in)
18.9
Width (in)
16.2
Height (in)
12.9
Weight (lbs)
77
Bore (in)
3.7
Stroke (in)
3.06
Engine Fuel
Gasoline
Fuel Tank Capacity (gal)
N/A
Lubrication System
Pressure Lubrication, Full Pressure Lubrication optional
Oil Capacity (oz)
48
Oil Filter
Standard
Starter
Electric Start
Air Filter
Cartridge Air Cleaner with Advanced Debris Management
Muffler
Optional
Certified Power Rating

*All power levels are stated gross torque at 2600 rpm per SAE J1940 as rated by Briggs & Stratton.
**All power levels are stated gross horsepower at 3600 rpm per SAE J1940 as rated by Briggs & Stratton.

Model Number
21R8
21R7
21R8
HP (gross) **
11.5
10.5
11.5
Engine Displacement (cc)
344
344
344
Number of Cylinders
Single
Single
Single
Engine Configuration
Vertical Shaft
Vertical Shaft
Vertical Shaft
OHV Engine
Yes
Yes
Yes
Length (in)
17.8
17.8
17.8
Width (in)
15.5
15.5
15.5
Height (in)
12.9
12.9
12.9
Weight (lbs)
66
66
66
Bore (in)
3.44
3.44
3.44
Stroke (in)
2.26
2.26
2.26
Engine Fuel
Gasoline
Gasoline
Gasoline
Fuel Tank Capacity (gal)
0.7 (optional)
0.7 (optional)
0.7 (optional)
Lubrication System
Pressure Lubrication
Pressure Lubrication
Pressure Lubrication
Oil Capacity (oz)
48
48
48
Oil Filter
Standard
Standard
Standard
Starter
Electric Start, Recoil Optional
Electric Start, Recoil Optional
Electric Start, Recoil Optional
Air Filter
Cartridge Air Cleaner with Advanced Debris Management
Cartridge Air Cleaner with Advanced Debris Management
Cartridge Air Cleaner with Advanced Debris Management
Muffler
Optional
Optional
Optional

*All power levels are stated gross torque at 2600 rpm per SAE J1940 as rated by Briggs & Stratton.
**All power levels are stated gross horsepower at 3600 rpm per SAE J1940 as rated by Briggs & Stratton.

Support

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