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NorthStar e420 EFI Horizontal OHV Engine with Electric Start, 420cc, 1in. x 3.48in. Shaft

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Shipping:
Backordered: Order now to reserve yours -
Estimated to ship 08/26/26Store Pickup:
Out of stock at Fredericksburg VA
- OHV overhead valve design
- CDI ignition system with electric start and recoil backup
- Bolt circle: 5in. and 6.5in.
- Mounting base: 7.7in.L x 3.38in.W (approx.)
- Cast-iron cylinder sleeve reduces bore wear to extend engine life and reduce emissions and oil consumption
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Description
Key Specs
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Product Summary
Replacement compatibility may vary based on engine shaft, mounting plate, dimensions, and other specifications. Always verify specifications prior to purchase. Please see product manual for additional information.
What's Included
- (1) e420 EFI Horizontal OHV Engine (1) Sparkplug wrench
Downloads

Features + Benefits

- OHV overhead valve design
- CDI ignition system with electric start and recoil backup
- Bolt circle: 5in. and 6.5in.
- Mounting base: 7.7in.L x 3.38in.W (approx.)
- Cast-iron cylinder sleeve reduces bore wear to extend engine life and reduce emissions and oil consumption
- Easy-to-install model for small engine needs
- EFI carburetor allows for fuel efficiency and easy starting in all weather conditions
- Heavy-duty 6.2L metal fuel tank
- LED illuminated push-button start
- USDA forestry approved
- Spark Arrestor
- Forged-steel crankshaft for superior strength in high-torque PTO applications
- Dual ball bearings reduce friction and wear, delivering smooth operation and longer life
- Internal oil splash enhancement system delivers extra lubrication
- Sound pressure balanced muffler
- Black aluminum alloy cylinder head cover
- All-metal camshaft
- Upgraded deep-groove ball bearing
- Low oil shutdown turns engine off if it runs low on oil, preventing serious damage or failure
- Pleated paper air filter and foam pre-cleaner for superior protection from harmful debris
Key Specs
| Attribute | Specification |
|---|---|
item# | 114656 |
Brand | NorthStar |
Manufacturer's Warranty | 5 year limited warranty |
Ship Weight | 94.4 LB |
Engine Displacement | 420 cc |
Engine Type | OHV |
Shaft Diameter | 1 in |
Shaft Diameter Metric | 25.4 mm |
Shaft Length | 3.48 in |
Shaft Length Metric | 88.5 mm |
Start Type | Electric and Recoil |
Shaft Keyway | 2 13/64 in |
Net Torque | 25 ft-lbs. |
Crankshaft | SAE J609 EXT 4 Straight Keyed Shaft Dia.: 25.4mm (1 In.) |
Cylinders (qty.) | 1 |
Cylinder Bore | 3.54in. |
Net Power Output | 9.8 HP |
Compression Ratio | 8.5:1 |
Fuel Tank | Yes |
Fuel Tank Capacity | 6.55 qt |
| Attribute | Specification |
|---|---|
Oil Capacity | 1.16 qt |
Low Oil Shutdown | Yes |
Low Oil Alert | Yes |
Shaft Rotation (From PTO Shaft Side) | Counter Clockwise |
Governor System | Yes |
Ignition System | CDI |
Carburetor | EFI |
Lubrication System | Splash |
Bearing Type | Ball |
Auto Compression Release | Yes |
Cooling System | Air |
Bore | 3.54 in |
Stroke | 2.6 in |
Air Cleaner Type | Foam + paper |
Throttle Control | Adjustable |
Charging System Amps | 3 |
Muffler Included | Yes |
Bolt Circle | 5 and 6.5 in in |
Mounting Base Length | 7.7 in |
Mounting Base Width | 3.38 in |
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Warranty
Manufacturer's Warranty
5 year limited warranty
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Item # 114656
$579.99Shipping:
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Estimated to ship 08/26/26Store Pickup:
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Specifications
420 cc
270 cc
389 cc
163 cc
OHV
GX Series OHV Commercial-duty
GX Series OHV Commercial-duty
GX Series OHV Commercial-duty
1 in
1 in
1 in
3/4 in
25.4 mm
-
-
-
3.48 in
3.23 in
3.48 in
2.43 in
88.5 mm
-
-
-
Electric and Recoil
Recoil
Electric and Recoil
Recoil
2 13/64 in
-
0.25 in
0.18 in
25 ft-lbs.
14.1 ft-lbs.
19.5 ft-lbs.
7.6 ft-lbs.
SAE J609 EXT 4 Straight Keyed Shaft Dia.: 25.4mm (1 In.)
R-type
Q-type
Horizontal
1
1
1
1
3.54in.
Cast Iron
Cast Iron
Cast Iron
9.8 HP
8.5 HP
11.7 HP
4.8 HP
8.5:1
8.5:1
8.0:1
9:1
Yes
No
No
Yes
6.55 qt
-
-
3.3 qt
1.16 qt
1.16 qt
1.16 qt
0.61 qt
Yes
-
Yes
Yes
Yes
Yes
Yes
Yes
Counter Clockwise
Counter Clockwise
Counter Clockwise
Counter Clockwise
Yes
Centrifugal Mechanical
Centrifugal Mechanical
Centrifugal Mechanical
CDI
Electronic
Electronic
Electronic
EFI
Float, External Vent
Float, External Vent
Float, External Vent
Splash
Splash
Splash
Splash
Ball
Ball
Ball
Ball
Yes
Yes
Yes
Yes
Air
Air
Air
Air
3.54 in
3 in
3.5 in
2.7 in
2.6 in
2.3 in
2.5 in
1.8 in
Foam + paper
Dual Element
Dual Element
Oil Bath
Adjustable
Remote
Remote
Remote
3
-
18
-
Yes
Yes
Yes
Yes
5 and 6.5 in in
-
-
-
7.7 in
-
-
-
3.38 in
-
-
-
-
5.25 in
5.25 in
4.17 in
-
Manual
Manual
Manual
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