Honda HT3813
The Honda HT3813 is a tractor produced by Honda Lawn Tractors. It is equipped with a 358 cc 21.9 ci engine. The listed engine power is Gasoline (listed): 13 hp / 9.7 kW. Transmission: 5 forward and 1 reverse. Operating weight: 545 lbs 247 kg.
Engine Power
Gasoline (listed): 13 hp / 9.7 kW
Fuel & Capacities
1.88 gal
7.1 L
Transmission
5 forward and 1 reverse
Operating Weight
545 lbs
247 kg
Overview
![]() | 1985 - 1989
Lawn tractor |
|---|
Production | |
|---|---|
Manufacturer | Honda |
Lawn tractor | |
Honda HT3813 Engine | |
|---|---|
13HP Honda 358cc 2-cyl gasoline | |
Fuel tank | 1.88 gal
7.1 L |
Engine details ... | |
Honda HT3813 Transmission | |
|---|---|
5-speed gear | |
Transmission details ... |
Mechanical | |
|---|---|
Two-wheel drive | |
Manual steering | |
Open operator station. |
Power Take-off (PTO) | |
|---|---|
Mid PTO | independent |
Clutch | manual |
Dimensions & Tires | |
|---|---|
Wheelbase | 45.7 inches
116 cm |
Weight | 545 lbs
247 kg |
Front tire | 15x6.00-6 |
Rear tire | 18x8.50-8 |
Full dimensions and tires ... | |
Electrical | |
|---|---|
Ground | negative |
Battery volts | 12 |
Battery AH | 30 |
References | |
|---|---|
![]() | |
Owner's Manual HT3813 (31750602) published in 1985 | |
Honda Lawn Tractors published in 1986 |
Engine
Engine Detail — 358 cc / 21.9 ci Gasoline
Manufacturer | Honda GX360K1 |
Fuel Type | Gasoline |
Configuration | 2-cylinder, liquid-cooled horizontal-shaft inline |
Displacement | 358 cc
21.9 ci |
Bore/Stroke | 2.28x2.68 inches
58 x 68 mm |
Power | 13 hp
9.7 kW |
Starter | electric |
Starter volts | 12 |
Coolant capacity | 1.85 qts
1.8 L |
Sparkplug gap | 0.026 inches
0.660 mm |
Oil capacity | 1.48 qts
1.4 L |
Transmission
Transmission — 5 forward and 1 reverse shaft-driven gear
Type | shaft-driven gear |
Gears | 5 forward and 1 reverse |
![]() | |
Dimensions
Honda HT3813 Tires | |
|---|---|
Lawn/turf front | 15x6.00-6 |
Lawn/turf rear | 18x8.50-8 |
Dimensions | |
|---|---|
Wheelbase | 45.7 inches
116 cm |
Length | 69.1 inches
175 cm |
Width | 49.6 inches
125 cm |
Height | 41.1 inches
104 cm |
Shipping weight | 545 lbs
247 kg |
Attachments
38" Mower deck | |
|---|---|
Type | mid-mount Honda |
2-blade with manual lift | |
Cutting width | 38 inches
96 cm |
Cut height | 1.5 to 4 inch
3 to 10 cm |
Cut positions | 6 |
Photos
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Honda Lawn Tractors Honda HT3813.
Estimated Continuous Field Runtime: 2.8 hrs
Approximately 2.8 hours of continuous field operation at ~75% rated power on a full tank (1.9 gal / 7.1 L).
Estimated 75% Load Fuel Burn~0.7 gal/hr (2.6 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 HT3813 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Honda Lawn Tractors Honda HT3813.
Converted Equivalents:
Horsepower (HP)13 hp
Kilowatts (kW)9.7 kW
Metric Horsepower (PS / CV)13.2 PS
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