Rato RG1.6-55-D-3 tiller / rotary hoe: review, specs, engine service data

The Rato RG1.6-55-D-3 is a tiller for garden, greenhouse and vegetable growers. The RG1.6-55-D-3 is equipped with small 4-stroke general-purpose Rato R100 engine; belt and worm gear type transmission system. The engine uses dual-element air cleaner, flat suction valve carburetor, transistorized magneto ignition system; centrifugal governor and recoil starter. The Rato RG1.6-55-D-3 working width is 55 cm (21.6 in) and working depth is 29 cm (11.4 in)

The Rato R100 is a single-cylinder air-cooled 4-stroke internal combustion engine. It has a 56.0 mm (2.2 in) cylinder bore and 40.0 mm (1.60 in) piston stroke. Compression ratio rating is 8.5:1. The engine produced 3.0 HP at 3,600 rpm of horsepower and 4.7 N·m (0.48 kg·m, 3.46 ft·lb) at 2,500 rpm of torque.

General information

Clutch type

Tiller, Rotavator, Cultivator Specifications
Model	Rato RG1.6-55-D-3
Dimensions (L x W x H):	770 x 425 x 660 mm (30.3 x 16.7 x 25.9 in)
Dry weight (without tines)	45.0 kg (99.2 lbs)
Operating weight	55.0 kg (121.2 lbs)
Engine
Engine model	Rato R100
Displacement	98 cm³ (6.0 cu-in)
Bore x stroke	56 mm X 40 mm (2.20 x 1.60 in)
Max. horsepower	3.0 HP at 3,600 rpm
Max. torque	4.7 N·m (0.48 kg·m, 3.46 ft·lb) at 2,500 rpm
Carburetor	Flat suction valve carburetor
Cooling system	Forced-air
Ignition system	Transistorized magento ignition
Lubricating system	Splash
Starting system	Recoil starter
Stoping system	Ignition primary circuit ground
Fuel used	Unleaded gasoline (octane number 86 or higher)
Fuel tank capacity	2.0 L
Transmission and clutch
Transmission	Belt and Worm gear
Tension
Gearbox	1 Forward

Maintenance data

Engine
Maximum speed	3,850 ± 200 rpm
Idle speed	1,550 ± 150 rpm
Cylinder compression	9.2 kg/cm² at 1,400 rpm
Valve clearance
Intake valve clearance	0.15±0.02 mm (0.006±0.001 in)
Exhaust valve clearance	0.20±0.02 mm (0.008±0.001 in)
Oil system
Oil type	4-stroke or an equivalent (SJ)
Recommended oil	SAE 10W-30, 15W-40
Oil capacity	0.35 L
Ignition system
Spark plug	NGK: BPR6ES
Spark plug gap	0.7-0.8 mm (0.028-0.031 in)

Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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We try to use official documentation and verify the published data, but errors may occur. In addition, specifications of machinery and equipment may vary depending on markets and modifications. We do not recommend the use of this data for spare parts or repairs. Use official service manuals or parts catalogs for your product.

Rato RG1.6-55-D-3

General information

Maintenance data

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