This document outlines the operational, maintenance, and safety instructions for the SM9800 scythe mower. It is designed for non-professional use and emphasizes safe handling and regular upkeep to ensure optimal performance and longevity.
Function Description
The SM9800 is a scythe mower designed for outdoor use, primarily for cutting grass and other vegetation. It features a handlebar for manual control, a cutter assembly for efficient mowing, and wheels for mobility. The device is powered by a gasoline engine and includes various controls for starting, stopping, and adjusting operation.
Key operational features include:
- Cutter Assembly Connection: The cutter assembly is securely attached to the transmission mechanism using four sets of bolts, washers, and safety nuts. Proper tightening is crucial for safe operation.
- Wheel Connection: Wheels are attached to drive shafts, ensuring the connection hole faces outwards. A spring pin secures the wheels, which must be properly placed before use.
- Handlebar Adjustment: The handlebar's height can be adjusted by loosening a locking bolt, moving the handle to the desired position, and then tightening the bolt. This allows for ergonomic operation based on the user's height.
- Fender Board Plate Connection: Fender board plates are attached using bolts and nuts, with proper alignment and secure fastening.
- Engine Start-up: The engine can be started manually using a kick-starter or electrically (on equipped models). For manual start, the engine switch is set to "ON," the rope handle is pulled until resistance is felt, and then a rapid pull is performed. For electric start, the engine switch is set to "START" until the engine fires, then returned to "ON."
- Throttle Control: The throttle lever allows adjustment of the engine speed, which in turn controls the driving speed and cutter reciprocating speed.
- Driving and Steering: The machine can be moved forward by pressing the clutch handle and backward by pulling the reverse handle. Steering is controlled by moving the operation handle left or right.
- Stopping the Engine: To stop the engine, release the clutch handle, adjust the throttle switch to minimum opening, and turn off the circuit switch. In emergencies, the engine switch can be set to "OFF."
- Walking Mode: When the engine is off, the machine can be manually pushed by removing the spring pin from the tire pin hole.
Important Technical Specifications
- Displacement: 196cc
- Torque: 13Nm
- Max. Power: 6.5HP / 4000rpm
- Starting System: Recoil (manual kick-starter)
- Type of Clutch: Belt
- Driving Speeds: FW 1.88-3.88km/h, BW 1.6km/h (Forward/Neutral/Backward gears)
- Fuel Volume: 3.6Lt
- Fuel Type: Unleaded Gasoline (95 octane or higher)
- Oil Volume: 0.6Lt
- Width of Cutting: 100cm
- Adjusted Height: 1-8cm
Usage Features
- Safety First: The manual emphasizes reading all instructions thoroughly before operation. It highlights warnings regarding rotating parts, flammable fuel, and hot exhaust mufflers.
- Operator Responsibility: Users are responsible for maintaining the machine in good operating condition, ensuring all safety devices are in place, and understanding how to stop the engine quickly in emergencies.
- Fuel Handling: Use unleaded gasoline with an octane number of 95 or higher. Refuel outdoors, away from ignition sources, and avoid overfilling the tank.
- Engine Oil: The machine may be delivered without engine oil. Users must add the appropriate quantity and type of oil before operation. Regular checks of engine oil level are crucial to prevent severe damage.
- Air Cleaner: The air cleaner should be regularly inspected and cleaned to ensure proper engine function. Different types of air cleaners (double-core, single-core, dust-collecting, oil bath) have specific cleaning procedures.
- Spark Plug: The spark plug type is BPR6ES(NGK) or NHSp LD F6RTC. Proper spark plug clearance (0.7-0.8 mm) is essential for normal engine operation.
- Carburetor Idling Adjustment: The carburetor idling speed can be adjusted using the throttle fixing screw (standard idling: 1700 ± 150rpm).
- Transportation and Storage: Transport the machine with the fuel cock closed and when the engine is cool. For long-term storage, ensure the storage area is dry and dust-free.
Maintenance Features
The manual provides a detailed maintenance schedule with recommended frequencies for various components:
- Engine Oil: Check level (each time), replace (first month/20hrs, every 6 months/100hrs, every year/300hrs).
- Reduction Gear Oil: Check level (each time), replace (every 6 months/100hrs).
- Air Cleaner: Check (each time), clean (first month/20hrs, every season/50hrs), replace (every year/300hrs). More frequent cleaning is recommended in dusty conditions.
- Deposit Cup: Clean (every 6 months/100hrs).
- Spark Plug: Clean, adjust (every 6 months/100hrs), replace (every year/300hrs).
- Spark Eliminator: Clean (every 6 months/100hrs).
- Idling: Check-adjust (every year/300hrs).
- Valve Clearance: Check-adjust (every year/300hrs).
- Fuel Tank & Fuel Filter: Clean (every year/300hrs).
- Fuel Supply Line: Check (every two years, replace if necessary).
Troubleshooting:
The manual includes comprehensive troubleshooting guides for common issues such as:
- Difficulty Starting: Addresses problems related to cylinder compression, spark plug function, fuel supply, and fuel quality.
- Low Engine Power Output: Covers issues like incorrect ignition time, clogged fuel lines, and carbon deposits.
- Engine Not Running Smoothly: Diagnoses problems like worn piston rings, abnormal combustion, and water in the float chamber.
- Engine Stopping Suddenly: Identifies causes such as fuel depletion, clogged carburetor, or faulty spark plugs.
- Engine Overheating: Explores reasons like incorrect ignition time, insufficient fuel supply, blocked exhaust pipes, and cooling system malfunctions.
- Abnormal Engine Noise: Helps identify the source of knocking or metallic sounds, linking them to worn engine parts, carbon deposits, or improper valve clearance.
The document emphasizes that all repair and maintenance work should be performed by authorized service technicians to ensure product safety and warranty validity. It also warns against using non-provided equipment, which could lead to malfunctions or serious injury.
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