The Honda GX25NTT3 engine, does not have a clutch. Instead, it uses a vertical gas tank design with a recoil start.
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Honda Engines, HONDA GX25NTT ENGINE, Engine Displacement 25 cc, Engine Type GX Series OHC, Model# GX25NTT3

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Shipping:
Factory shippedStore Pickup:
Not available - online only
- Model# GX25NTT3; 25cc, 1 HP air-cooled, 4-stroke, vertical engine
- Reliable and durable with an overhead cam design that offers cooler, fuel-efficient operation
- Automatic decompression for easy, reliable starting and quiet operation
- 2.6in. bolt circle
- Cast iron cylinder sleeve that provides longer service life
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Description
Key Specs
Reviews
Q & A
Accessories
Warranty
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Product Summary
What's Included
- (1) Engine
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Features + Benefits
- Model# GX25NTT3; 25cc, 1 HP air-cooled, 4-stroke, vertical engine
- Reliable and durable with an overhead cam design that offers cooler, fuel-efficient operation
- Automatic decompression for easy, reliable starting and quiet operation
- 2.6in. bolt circle
- Cast iron cylinder sleeve that provides longer service life
- Great for use with construction equipment and other applications including String Trimmers, Earth Augers and other high-RPM applications
- Full 260° any-side-up operation
- Not for sale in CA
Key Specs
| Attribute | Specification |
|---|---|
item# | 44259 |
Brand | Honda Engines |
Manufacturer's Warranty | 2 year limited warranty |
Ship Weight | 15.0 LB |
Engine Displacement | 25 cc |
Engine Type | GX Series OHC |
Fuel Type | Gasoline |
Start Type | Recoil |
Net Torque | 0.74 ft-lbs. |
PTO Height | 3.4 in |
Cylinders (qty.) | 1 |
Cylinder Bore | Cast Iron |
Net Power Output | 1 HP |
Compression Ratio | 8:1 |
Fuel Tank | Yes |
Fuel Tank Capacity | 0.61 qt |
Oil Capacity | 0.08 qt |
Max. RPM | 7,000 |
Shaft Rotation (From PTO Shaft Side) | Counter Clockwise |
| Attribute | Specification |
|---|---|
Ignition System | Transistorized Magneto |
Carburetor | Diaphragm (overflow Return) |
Lubrication System | Pressure |
Bearing Type | Ball |
Auto Compression Release | Yes |
Cooling System | Air |
Bore | 1.37 in |
Stroke | 1 in |
Air Cleaner Type | Semi-dry |
Choke Control | Manual |
Throttle Control | Manual |
Fuel Filter | Yes |
Muffler Included | Yes |
Bolt Circle | 2.6 in |
Mounting Base Length | 2.3 in |
Mounting Base Width | 2.3 in |
Product Weight | lb |
Dimensions L x W x H (in.) | 7.6 x 8.7 x 9.1 in |
Reviews
Questions & Answers
Questions
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· a year ago
What is clutch diameter
1 answer-
ProductExpert13· a year ago
Helpful?
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· a year ago
Is this model original????Can it be turned 360 degrees???
1 answer-
ProductExpert6· a year ago
It would be the original model number GX25NTT3. The engine is designed for 360 degree operation and can be used in any position without compromising performance.
Helpful?
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· 3 years ago
Type spark plug. Type of gas.
1 answer-
ProductExpert6· 3 years ago
The engine would have a type NGK CMR5H spark plug. It would use regular unleaded gas.
Helpful?
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· 3 years ago
How does it look to the trimmer in the front? I am looking for a three hole hookup to my weed eater.
1 answer-
ProductExpert38· 3 years ago
This engine has a 4 bolt mounting plate with a 2.6 inch bolt circle.
Helpful?
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· 5 years ago
Does this motor come complete with clutch and clutch housing.
1 answer-
ProductExpert38· 5 years ago
This engine comes with the clutch and clutch housing.
Helpful?
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· 5 years ago
What's the difference between horizontal and vertical versions of the engine?
1 answer-
ProductExpert5· 5 years ago
The difference between the two engines, items 44259 and 44258, is the shaft output and the vertical engine has a 3.4" PTO height and the horizontal engine has a 3.5" PTO height.
Helpful?
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· 11 years ago
Engine Uses
I would like to attached this engine to an existing Bolens BL410 Tiller/Cultivator.
1 answer-
ProductExpert6· 3 years ago
This Honda engine is 4-stroke/cycle. The Bolens BL410 Tiller/Cultivator has a 2-stroke/cycle engine, so this Honda model is not compatible. Northern Tool doesn't carry any 2-stroke engines.
Helpful?
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Warranty
Manufacturer's Warranty
2 year limited warranty
Extend Your Warranty Coverage with a Northern Protection Plan (NPP)
Replacement Plan — 1 Year
A Northern Protection Plan is available after adding the product to your shopping cart.
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Specifications
25 cc
163 cc
500 cc
540 cc
GX Series OHC
GXV Series OHV Commercial-duty
Intek
Intek OHV
Gasoline
Gasoline
Gasoline
Gasoline
Recoil
Recoil
Electric
Electric
0.74 ft-lbs.
7.1 ft-lbs.
-
-
3.4 in
-
-
-
1
1
1
1
Cast Iron
Cast Iron
Cast Iron
Cast Iron
1 HP
4.3 HP
-
-
8:1
8.0:1
8.5:1
8.5:1
Yes
Yes
No
No
0.61 qt
1.9 qt
-
-
0.08 qt
0.69 qt
1.5 qt
1.5 qt
7,000
3,600
3,300
3,600
Counter Clockwise
Counter Clockwise
Counter Clockwise
Counter Clockwise
Transistorized Magneto
Electronic
Electronic
Electronic
Diaphragm (overflow Return)
Float
Float
Float
Pressure
Splash
Splash
Full Pressure
Ball
-
Plain
Plain
Yes
Yes
Yes
Yes
Air
Air
Air
Air
1.37 in
2.7 in
3.56 in
3.7 in
1 in
1.8 in
3.06 in
3.06 in
Semi-dry
Dual Element
Dual Element
Dual Element
Manual
Remote
Manual
Manual
Manual
Manual
Remote
Remote
Yes
-
Yes
Yes
Yes
Yes
Yes
No
2.6 in
8 in
10 in
10 in
2.3 in
-
-
-
2.3 in
-
-
-
lb
lb
lb
lb
7.6 x 8.7 x 9.1 in
16.31 x 14.12 x 13.87 in
19.0 x 16.0 x 13.0 in
19.0 x 16.5 x 16.5 in
-
7/8 in
1 in
1 in
-
3.18 in
3.15 in
3.15 in
-
Centrifugal Mechanical
Mechanical
Mechanical
-
-
0.25 in
0.25 in
-
-
1 x 3.15 In
1 x 3.15 In
-
-
No
No
-
-
No
No
-
-
No
No
-
-
9
9
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