Honda HT-R3811
The Honda HT-R3811 is a tractor produced by Honda Lawn Tractors. It is equipped with a 337 cc 20.6 ci engine. The listed engine power is Gasoline (listed): 11 hp / 8.2 kW. Transmission: 5 forward and 1 reverse. Operating weight: 390 lbs 176 kg.
Engine Power
Gasoline (listed): 11 hp / 8.2 kW
Fuel & Capacities
0.5 gal
1.9 L
Transmission
5 forward and 1 reverse
Operating Weight
390 lbs
176 kg
Overview
![]() | 1985 - 1988
Riding lawn mower |
|---|
Production | |
|---|---|
Manufacturer | Honda |
Riding lawn mower | |
Honda HT-R3811 Engine | |
|---|---|
11HP Honda 337cc 1-cyl gasoline | |
Fuel tank | 0.5 gal
1.9 L |
Engine details ... | |
Honda HT-R3811 Transmission | |
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5-speed gear | |
Transmission details ... |
Mechanical | |
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Two-wheel drive | |
Manual steering | |
Open operator station. |
Power Take-off (PTO) | |
|---|---|
Mid PTO | independent |
Clutch | manual |
Dimensions & Tires | |
|---|---|
Wheelbase | 43.3 inches
109 cm |
Weight | 390 lbs
176 kg |
Front tire | 11x4.00-5 |
Rear tire | 16x6.50-8 |
Full dimensions and tires ... | |
Electrical | |
|---|---|
Ground | negative |
Battery volts | 12 |
References | |
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HT-R3811 published in 2003 |
Engine
Engine Detail — 337 cc / 20.6 ci Gasoline
Manufacturer | Honda GXV340 |
Fuel Type | Gasoline |
Configuration | 1-cylinder, air-cooled vertical-shaft |
Displacement | 337 cc
20.6 ci |
Bore/Stroke | 3.23x2.52 inches
82 x 64 mm |
Power | 11 hp
8.2 kW |
Starter | electric |
Starter volts | 12 |
Sparkplug | NGK BPR5ES |
Sparkplug gap | 0.030 inches
0.762 mm |
Oil capacity | 1.2 qts
1.1 L |
Oil change | 100 h |
Transmission
Transmission — 5 forward and 1 reverse belt-driven gear
Type | belt-driven gear |
Gears | 5 forward and 1 reverse |
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Dimensions
Honda HT-R3811 Tires | |
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Lawn/turf front | 11x4.00-5 |
Lawn/turf rear | 16x6.50-8 |
Dimensions | |
|---|---|
Wheelbase | 43.3 inches
109 cm |
Length | 60.4 inches
153 cm |
Height (steering wheel) | 39.4 inches
100 cm |
Weight | 390 lbs
176 kg |
Front tread | 22.4 inches
56 cm |
Rear tread | 25 inches
63 cm |
Attachments
38" Mower deck | |
|---|---|
Type | mid-mount Honda |
2-blade with manual lift | |
Cutting width | 38 inches
96 cm |
Overall width | 39.4 inches
100 cm |
Cut height | 1 to 3.5 inch
2 to 8 cm |
Cut positions | 6 |
Photos
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Honda Lawn Tractors Honda HT-R3811.
Estimated Continuous Field Runtime: 0.9 hrs
Approximately 0.9 hours of continuous field operation at ~75% rated power on a full tank (0.5 gal / 1.9 L).
Estimated 75% Load Fuel Burn~0.6 gal/hr (2.2 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 HT-R3811 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Honda Lawn Tractors Honda HT-R3811.
Converted Equivalents:
Horsepower (HP)11 hp
Kilowatts (kW)8.2 kW
Metric Horsepower (PS / CV)11.2 PS
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