InStart® Series Engine

Start Effortlessly Every Time.

InStart® lithium-ion electric starting engine combines the power of gas and the starting reliability of lithium-ion battery technology.

6.25 - 8.75

Gross Torque (ft-lbs)

150 - 190cc

Displacement

Gas

Engine Fuel

0.27 - 0.30

Fuel Tank Capacity (gal)

Features

InStart ® Lithium-Ion Battery Technology

The world's first lawn mower engine to combine the power of gas and the starting reliability of lithium-ion battery technology.

Made in the USA

Made in the USA of US and global parts.

Rapid Charging

It charges fully in one hour delivering up to 75 starts or ten minutes of rapid recharging provides up to 20 starts.

Our Starting Promise™

Starts in 2 attempts – or we'll fix it for free.*

Just Check & Add™

Cut the hassles from gas engine maintenance with this innovative system that never requires an oil change.

Dual-Sealing Commercial-Grade Air Management System

Reduces harmful yard debris.

* See https://www.briggsand stratton.com/na/en_us/support/starting-promise.html for complete details.
** Regular scheduled maintenance must be performed

Specs

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Torque (ft-lbs, gross)*
6.25
Number of Cylinders
Single
OHV Engine
Yes
Width (in)
12.2
Weight (lbs)
17.5
Stroke (in)
1.755
Fuel Tank Capacity (oz)
0.2
Lubrication System
Dura-Lube Splash Lubrication
Starter
InStart® Lithium-Ion Electric Start
Muffler
Super-Lo Tone
Certified Power Rating
Engine Displacement (cc)
150
Engine Configuration
Vertical Shaft
Length (in)
13.8
Height (in)
9.6
Bore (in)
2.58
Engine Fuel
Gasoline
Oil Capacity (oz)
15
Oil Filter
N/A
Air Filter
Dual-Sealing Paper Element
Fuel Shutoff Valve
N/A
Model Number
126M
Engine Displacement (cc)
163
Engine Configuration
Vertical Shaft
Length (in)
13.8
Height (in)
10.1
Bore (in)
2.69
Engine Fuel
Gasoline
Oil Capacity (oz)
15
Oil Filter
N/A
Air Filter
Dual-Sealing Paper Element
Fuel Shutoff Valve
N/A
Torque (ft-lbs, gross)*
6.75
Number of Cylinders
Single
OHV Engine
Yes
Width (in)
12.5
Weight (lbs)
18.8
Stroke (in)
1.75
Fuel Tank Capacity (oz)
0.27
Lubrication System
Dura-Lube Splash Lubrication
Starter
InStart® Lithium-Ion Electric Start
Muffler
Super Lo-Tone™
Certified Power Rating
Model Number
128M
Engine Displacement (cc)
163
Engine Configuration
Vertical Shaft
Length (in)
13.8
Height (in)
10.1
Bore (in)
2.69
Engine Fuel
Gasoline
Oil Capacity (oz)
15
Oil Filter
N/A
Air Filter
Dual-Sealing Paper Element
Fuel Shutoff Valve
N/A
Torque (ft-lbs, gross)*
7.25
Number of Cylinders
Single
OHV Engine
Yes
Width (in)
12.5
Weight (lbs)
18.8
Stroke (in)
1.75
Fuel Tank Capacity (oz)
0.27
Lubrication System
Dura-Lube Splash Lubrication
Starter
InStart® Lithium-Ion Electric Start
Muffler
Super Lo-Tone™
Certified Power Rating
Model Number
111P
Engine Displacement (cc)
175
Engine Configuration
Vertical Shaft
Length (in)
15.6
Height (in)
9.4
Bore (in)
2.6
Engine Fuel
Gasoline
Oil Capacity (oz)
18
Oil Filter
Optional
Air Filter
Dual-Sealing Commercial-Grade Air Cleaner
Fuel Shutoff Valve
Optional
Torque (ft-lbs, gross)*
7.75
Number of Cylinders
Single
OHV Engine
Yes
Width (in)
12.8
Weight (lbs)
24.5
Stroke (in)
2
Fuel Tank Capacity (oz)
0.3
Lubrication System
Dura-Lube Splash Lubrication
Starter
InStart® Lithium-Ion Electric Start
Muffler
Super Lo-Tone™
Certified Power Rating
Model Number
121R
Engine Displacement (cc)
190
Engine Configuration
Vertical Shaft
Length (in)
15.6
Height (in)
9.4
Bore (in)
2.7
Engine Fuel
Gasoline
Oil Capacity (oz)
18
Oil Filter
Optional
Air Filter
Dual-Sealing Commercial-Grade Air Cleaner
Fuel Shutoff Valve
Optional
Torque (ft-lbs, gross)*
8.50
Number of Cylinders
Single
OHV Engine
Yes
Width (in)
12.8
Weight (lbs)
24.3
Stroke (in)
2
Fuel Tank Capacity (oz)
0.3
Lubrication System
Dura-Lube Splash Lubrication
Starter
InStart® Lithium-Ion Electric Start
Muffler
Super Lo-Tone™
Certified Power Rating
Model Number
121S
Engine Displacement (cc)
190
Engine Configuration
Vertical Shaft
Length (in)
15.6
Height (in)
9.4
Bore (in)
2.7
Engine Fuel
Gasoline
Oil Capacity (oz)
18
Oil Filter
Optional
Air Filter
Dual-Sealing Commercial-Grade Air Cleaner
Fuel Shutoff Valve
Optional
Torque (ft-lbs, gross)*
8.75
Number of Cylinders
Single
OHV Engine
Yes
Width (in)
12.8
Weight (lbs)
24.3
Stroke (in)
2
Fuel Tank Capacity (oz)
0.3
Lubrication System
Dura-Lube Splash Lubrication
Starter
InStart® Lithium-Ion Electric Start
Muffler
Super Lo-Tone™
Certified Power Rating
Torque (ft-lbs, gross)*
6.75
6.25
6.75
Engine Displacement (cc)
163
150
163
Number of Cylinders
Single
Single
Single
Engine Configuration
Vertical Shaft
Vertical Shaft
Vertical Shaft
OHV Engine
Yes
Yes
Yes
Length (in)
13.8
13.8
13.8
Width (in)
12.5
12.2
12.5
Height (in)
10.1
9.6
10.1
Weight (lbs)
18.8
17.5
18.8
Bore (in)
2.69
2.58
2.69
Stroke (in)
1.75
1.755
1.75
Engine Fuel
Gasoline
Gasoline
Gasoline
Fuel Tank Capacity (oz)
0.27
0.2
0.27
Oil Capacity (oz)
15
15
15
Lubrication System
Dura-Lube Splash Lubrication
Dura-Lube Splash Lubrication
Dura-Lube Splash Lubrication
Oil Filter
N/A
N/A
N/A
Starter
InStart® Lithium-Ion Electric Start
InStart® Lithium-Ion Electric Start
InStart® Lithium-Ion Electric Start
Air Filter
Dual-Sealing Paper Element
Dual-Sealing Paper Element
Dual-Sealing Paper Element
Muffler
Super Lo-Tone™
Super-Lo Tone
Super Lo-Tone™
Fuel Shutoff Valve
N/A
N/A
N/A
Model Number
126M
126M

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