The Rato RG6.5-130Q-Z is a tiller for garden, greenhouse and vegetable growers. The RG6.5-130Q-Z is equipped with small 4-stroke general-purpose Rato R390 engine; gear type transmission system and gearbox with two forward, one reverse and idle speed.
The engine uses dual-element air cleaner, flat suction valve carburetor, transistorized magneto ignition system; centrifugal governor and recoil starter. The Rato RG6.5-130Q-Z working width is 120 cm (47.2 in) and working depth is 36 cm (14.2 in)
The Rato R390 is a single-cylinder air-cooled 4-stroke internal combustion engine. Compression ratio rating is 8.5:1. An 88.0 mm (3.50 in) cylinder bore and 64.0 mm (2.50 in) piston stroke give the Rato R390 motor a total of 389 cc (23.7 cu-in) of displacement. The engine produced 7.8 kW at 3,600 rpm of horsepower and 25 N·m (2.54 kg·m, 18.43 ft·lb) at 2,500 rpm of torque.
General information
| Tiller, Rotavator, Cultivator Specifications | |
| Model | Rato RG6.5-130Q-Z |
| Dimensions (L x W x H): | 1040 x 690 x 860 mm (40.9 x 27.16 x 33.8 in) |
| Dry weight (without tines) | 120.0 kg (264.5 lbs) |
| Operating weight | 140.0 kg (308.6 lbs) |
| Engine | |
| Engine model | Rato R390 |
| Displacement | 289 cm3 (23.7 cu-in) |
| Bore x stroke | 88 X 64 mm (3.5 x 2.5 in) |
| Max. horsepower | 7.8 kW at 3,600 rpm |
| Max. torque | 25 N·m (2.54 kg·m, 18.43 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 | 6.5 L |
| Transmission and clutch | |
| Transmission | Gear |
| Clutch type | Friction Disk |
| Gearbox | 2 Forward, 1 Reverse and 1 Idle |
Maintenance data
| Engine | |
| Maximum speed | 3,750-3,810 rpm |
| Cylinder compression | 14.0 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 | 1.1 L |
| Carburetor | |
| Main jet | #92 |
| Float height | 13.2 mm (0.52 in) |
| Pilot screw opening | 1-7/8 turns out |
| Ignition system | |
| Spark plug | NGK: BPR6ES |
| Spark plug gap | 0.7-0.8 mm (0.028-0.031 in) |
| Primary ignition coil resistance | 0.6-0.9 Ω |
| Secondary ignition coil resistance | 5.6-6.9 kΩ |
| Ignition coil air gap | 0.4 ± 0.2 (0.016 ± 0.008) |
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