Inventory Unit Detail
Honda Engines GX630-QZB
Incoming
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Overview
New/Used New
Availability
Incoming
LocationAll Season Cycle
Stock #
N-2021-GX630QZB
Condition
Excellent
Product Features
Dealer Notes
20 HP, Electric Start 17 Amp, Straight 1" x 2-7/8", 1/4" Keyway
Description
Raising the bar. On everything.
Honda V-twin engines offer higher horsepower, improved adaptability, quiet operation, and greater fuel efficiency. Not to mention a 3 year warranty.
Common Applications
- Commercial lawn and garden equipment
- Pressure washers
- Tillers / cultivators
- Generators
- Forestry equipment
- Construction / industrial equipment
- Agricultural equipment
- Small vehicles
- Water pumps
Fuel Efficient Operation
- Fuel economy is similar to fuel injection, with the simplicity of carburetion.
- Digital CDI ignition system with variable timing
- Includes a rev limiter to protect against damage from over-revving.
- Two barrel inner-vent carburetor for more precise fuel metering
- Insert style rod bearings
High Output Performance
- Hemispherical combustion chamber delivers rapid combustion
- 9.3:1 compression ratio generates high power output without the need for premium fuel
- Forged steel crankshaft
- Pressure fed crankshaft bearings
Smooth Performance
- Integrated cylinder and head
- Racing inspired forged steel connecting rods
Exceptionally Quiet
- Aluminum push rods with steel tips - lighter weight, lower vibration, and quieter operation
- High capacity 36 blade cooling fan
Proven Reliability
- High capacity pump facilitates consistent oil delivery
- Dual cylindrical air filter
- Large diameter air intake for superior cooling
- 3-Year Limited Warranty
- Oil Alert
Easy to Use and Maintain
- Hour meter available
- Conveniently located controls, with several configurations available based on user preference
- Automotive-type spin-on oil filter
Easy Starting
- Automatic mechanical de-compression system
- Variable ignition timing
Emissions Compliant
- CARB and EPA certified
- No catalyst necessary
Available Options
- High capacity charging systems
- A variety of control box configurations
- Hour meter
- Dry fuel versions
Specifications
- Engine Type: Air-cooled 4-stroke OHV
- Bore x Stroke: 78 X 72 mm
- Displacement: 688 cm3
- Net Power Output*: 20.8 hp (15.5 kW) @ 3,600 rpm
- Net Torque: 35.6 lbs ft (48.3 Nm) @ 2,500 rpm
- PTO Shaft Rotation: Counterclockwise (from PTO shaft side)
- Compression Ratio: 9.3:1
- Lamp/Charge coil options: 2.7A, 17A, 26A
- Carburetor: Horizontal type, two barrel butterfly valve, internal vent
- Ignition System: Digital CDI with variable ignition timing
- Starting System: Electric
- Lubrication System: Forced lubrication
- Governor System: Mechanical
- Air Cleaner: Dual element
- Oil Capacity: 2.1 US qt (2.0l)
- Fuel: Unleaded 86 octane or higher
- Dry Weight: 96.8 lb (44 kg)
Dimensions
- Length (min): 15.9" (405 mm)
- Width (min): 16.1" (410 mm)
- Height (min): 17.2" ( 438 mm)
PTO
- V type: Tapered shaft
- T type: Straight shaft
- B type: Straight shaft
- S type: Straight shaft (metric)
- D type: Straight shaft
Engine
Engine Type | Air-cooled 4-stroke OHV |
Bore x Stroke | 78 x 72 mm |
Displacement | 688 cm3 |
Compression Ratio | 9.3:1 |
Horsepower | 20.8 hp (15.5 kW) @ 3,600 rpm |
Torque | 35.6 lb. ft (48.3 Nm) @ 2,500 rpm |
Starting System | Electric |
Dimensions
Length | 15.9 in. (405 mm) |
Width | 16.1 in. (410 mm) |
Height | 17.2 in. ( 438 mm) |
Weight | 96.8 lb. (44 kg) |
Shopping Tools
Quote by Phone

Honda Engines GX630-QZB
(866) 362-8100
All Season Cycle
904 2nd Street West Box 1029 |
Brooks
AB
T1R 1B8
Canada
- Summer Hours Open Close
- Monday - Friday: 8:30 a.m. 5:30 p.m.
- Saturday: Closed
- Sunday: Closed
- Winter Hours Open Close
- Monday - Friday: 8:30 a.m. 5:30 p.m.
- Saturday: Closed
- Sunday: Closed
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