Honda H4518
The Honda H4518 is a tractor produced by Honda Lawn Tractors. It is equipped with a 634 cc 38.7 ci engine. The listed engine power is Gasoline (listed): 18 hp / 13.4 kW. Transmission: infinite forward and reverse. Operating weight: 670 lbs*Weight of tractor with 46-inch mowing deck. 303 kg.
Engine Power
Gasoline (listed): 18 hp / 13.4 kW
Fuel & Capacities
2.38 gal
9.0 L
Transmission
infinite forward and reverse
Operating Weight
670 lbs*Weight of tractor with 46-inch mowing deck.
303 kg
Overview
 | 1991 - 1998 |
|---|
Production | |
|---|---|
Manufacturer | Honda |
Honda H4518 Engine | |
|---|---|
18HP Honda 634cc 2-cyl gasoline | |
Fuel tank | 2.38 gal
9.0 L |
Engine details ...  | |
Honda H4518 Transmission | |
|---|---|
hydrostatic | |
Transmission details ...  |
Mechanical | |
|---|---|
Two-wheel drive | |
Open operator station. |
Dimensions & Tires | |
|---|---|
Wheelbase | 46.9 inches
119 cm |
Weight | 670 lbs
303 kg |
Front tire | 15x6.00-6 |
Rear tire | 20.5x8.5-10 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Battery volts | 12 |
Battery AH | 30 |
References | |
|---|---|
 | |
Honda Lawn Tractors published in 1993 |
Engine
Engine Detail — 634 cc / 38.7 ci Gasoline
Manufacturer | Honda GX640 |
Fuel Type | Gasoline |
Configuration | 2-cylinder, liquid-cooled horizontal-shaft |
Displacement | 634 cc
38.7 ci |
Bore/Stroke | 3.00x2.80 inches
76 x 71 mm |
Power | 18 hp
13.4 kW |
Starter | electric |
Starter volts | 12 |
Coolant capacity | 2.9 qts
2.7 L |
Sparkplug | BPR5ES-11 |
RN12YC | |
Sparkplug gap | 0.040 inches
1.016 mm |
Oil capacity | 2.1 qts
2.0 L |
Honda H4518 Engine | |
|---|---|
 | |
Image courtesy of Sorin Lungoci |
Transmission
Transmission — infinite forward and reverse shaft-driven hydrostatic
Type | shaft-driven hydrostatic |
Gears | infinite forward and reverse |
Single control lever with stop for mowing range and transport range. | |
 | |
Honda H4518 Transmission | |
|---|---|
 | |
Image courtesy of Sorin Lungoci |
Dimensions
Honda H4518 Tires | |
|---|---|
Lawn/turf front | 15x6.00-6 |
Lawn/turf rear | 20.5x8.5-10 |
Dimensions | |
|---|---|
Wheelbase | 46.9 inches
119 cm |
Length | 71.5 inches
181 cm |
Width | 50 inches
127 cm |
Height | 41.4 inches
105 cm |
Weight | 670 lbs*Weight of tractor with 46-inch mowing deck.
303 kg |
Attachments
Attachment overview | |
|---|---|
38" mid-mount mower deck | |
42" mid-mount mower deck | |
46" mid-mount mower deck |
Photos
Honda H4518
Honda H4518
Recommended Implements & Sizing Guide
Engineering recommendations for Honda Lawn Tractors Honda H4518 based on its 18 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 1 to 2 Bottom (12")1 - 2 铧 (30 cm) | Light Duty | Ideal for garden plots and light sandy soil. |
Rotary Cutter / MowerMowing & Clearing | 4 ft (48 in)1.2 m | Light Duty | Pasture clipping and light brush under 1" diameter. |
Rotary TillerSeedbed Prep | 42 to 48 in105 - 120 cm | Light Duty | Covers compact tractor tire width. |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Honda Lawn Tractors Honda H4518.
Estimated Continuous Field Runtime: 2.6 hrs
Approximately 2.6 hours of continuous field operation at ~75% rated power on a full tank (2.4 gal / 9 L).
Estimated 75% Load Fuel Burn~0.9 gal/hr (3.5 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Honda Lawn Tractors Honda H4518 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Honda Lawn Tractors Honda H4518.
Converted Equivalents:
Horsepower (HP)18 hp
Kilowatts (kW)13.4 kW
Metric Horsepower (PS / CV)18.2 PS
Direct Competitor Comparison
Compare Honda H4518 against same-era industry alternatives in the same horsepower class.
Current Model
Honda Lawn Tractors
Honda H4518
Engine Power:Gasoline (listed): 18 hp / 13.4 kW
★ Baseline Reference
International HarvesterMarket Competitor
International Harvester Type A 15HP
Engine Power:16.7
Production Years:1908 - 1911
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