Gaskets do not come with the mufflers. To purchase the appropriate gaskets, please reach out to our parts department at 1.800.657.0516.
Honda Engines, HONDA V-TWIN HORIZ GX690RHXTAF, Engine Displacement 688 cc, Engine Type GX Series OHV V-twin, Shaft Diameter 1-1/8 in, Model# GX690RHXTAF

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Shipping:
Factory shippedHeavy/large item. Lift gate service available.
Store Pickup:
Not available - online only
- With control box
- Fuel tank and muffler not included
- Not for sale in CA
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Description
Key Specs
Reviews
Q & A
Accessories
Warranty
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Product Summary
What's Included
- (1) Engine, Model# GX690RTAF
Features + Benefits

- With control box
- Fuel tank and muffler not included
- Not for sale in CA
Key Specs
| Attribute | Specification |
|---|---|
item# | 109864 |
Brand | Honda Engines |
Manufacturer's Warranty | 3 year limited warranty |
Ship Weight | 167.0 LB |
Engine Displacement | 688 cc |
Engine Type | GX Series OHV V-twin |
Shaft Diameter | 1-1/8 in |
Shaft Length | 3.5 in |
Start Type | Electric |
Shaft Keyway | 0.25 in |
Net Torque | 35.6 ft-lbs. |
Crankshaft | T-type |
Cylinders (qty.) | 2 |
Cylinder Bore | Integrated |
Net Power Output | 22.1 HP |
Compression Ratio | 9.3:1 |
Fuel Tank | No |
| Attribute | Specification |
|---|---|
Oil Capacity | 2 qt |
Low Oil Shutdown | No |
Low Oil Alert | Yes |
Shaft Rotation (From PTO Shaft Side) | Counter Clockwise |
Governor System | Mechanical |
Ignition System | Electrical, Digital CDI W/variable Ignition Timing |
Carburetor | (2) Barrel, Fuel Cut Solenoid, Inner Vent |
Lubrication System | Full Pressure |
Bearing Type | Ball |
Cooling System | Air |
Bore | 3.1 in |
Stroke | 2.8 in |
Air Cleaner Type | Dual Element |
Choke Control | Manual |
Throttle Control | Manual |
Charging System Amps | 20 |
Muffler Included | No |
Reviews
Questions & Answers
Questions
-
· 6 years ago
I bought this engine and also the exhaust recomened.do I need to order a gasket for exhaust separate or does it come with
1 answer-
ProductExpert12· 6 years ago
Helpful?
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· 14 years ago
RTAF.....what do these letters represent on the engine?
1 answer-
ProductExpert41· 14 years ago
R is the series code, whereas the TAF is a specification code that identifies the engines uniqueness compared to other GX690 engines..
Helpful?
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· 14 years ago
I want to replace a GX 670 24 hp with a 690. Does the 690 have same hp? Also is it same size? Space limited.
1 answer-
ProductExpert6· 14 years ago
They are approximately the same horsepower. The physical dimensions of the GX390 are 16"L X 18"W X 18"H. The mounting base dimensions are 7.69" X 3.39"-4.65" and bolt circles are 5" X 6-1/2", OR 7-3/4". The shaft size is 1-1/8" Diameter X 3.55" L. You would want to make sure your engine has the same shaft size and bolt circles to be sure it will mount up.
Helpful?
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· 15 years ago
horspower of this engine ?
engine dimensions ?
1 answer-
ProductExpert6· 15 years ago
The approximate rated power for this engine is 22.2 HP. The dimensions are 16"L X 18"W X 18"H.
Helpful?
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· 15 years ago
does this engine have cast iron cylinders ?
1 answer-
ProductExpert12· 15 years ago
The Honda engine does have cast iron cylinder liners
Helpful?
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Warranty
Manufacturer's Warranty
3 year limited warranty
Extend Your Warranty Coverage with a Northern Protection Plan (NPP)
Repair Plan — 1 Year
A Northern Protection Plan is available after adding the product to your shopping cart.
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Specifications
688 cc
270 cc
270 cc
196 cc
GX Series OHV V-twin
GX Series OHV Commercial-duty
GX Series OHV Commercial-duty
GX Series OHV Commercial-duty
1-1/8 in
1 in
1 in
5/8 in
3.5 in
3.23 in
3.23 in
2.42 in
Electric
Recoil
Electric and Recoil
Recoil
0.25 in
-
0.25 in
-
35.6 ft-lbs.
14.1 ft-lbs.
14.1 ft-lbs.
9.1 ft-lbs.
T-type
H-type
H-type
T-type
2
1
1
1
Integrated
Cast Iron
Cast Iron
Cast Iron
22.1 HP
8.5 HP
8.5 HP
5.5 HP
9.3:1
8.5:1
8.5:1
8.5:1
No
-
-
Yes
2 qt
1.16 qt
1.16 qt
0.63 qt
No
-
-
Yes
Yes
-
-
-
Counter Clockwise
Counter Clockwise
Counter Clockwise
Counter Clockwise
Mechanical
Centrifugal Mechanical
Centrifugal Mechanical
Centrifugal Mechanical
Electrical, Digital CDI W/variable Ignition Timing
Electronic
Electronic
Electronic
(2) Barrel, Fuel Cut Solenoid, Inner Vent
Float, External Vent
Float, External Vent
Float
Full Pressure
Splash
Splash
Splash
Ball
-
-
-
Air
Air
Air
Air
3.1 in
3 in
3 in
2.7 in
2.8 in
2.3 in
2.3 in
2.1 in
Dual Element
Dual Element
Dual Element
Dual Element
Manual
Manual
Manual
Manual
Manual
Manual
Remote
Manual
20
-
-
-
No
-
-
Yes
-
5.25 in
5.25 in
4.17 in
-
5.6 qt
5.6 qt
3.3 qt
-
Yes
Yes
-
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