Neo-tec NH843 43cc Best Gas Chainsaw, 16 inch Great All-Around Chain Saw
Key Features
42.8cc 2.7HP Engine Home & Light Commercial Use
Safety Assurance
16 Inch/40cm Max Cut Light Logging
Upgrade Highlights
Side Chain Tensioning
Easily adjust the chain from the side of the saw for faster and more convenient maintenance.
Manual Primer Bulb Fast Easy Cold Start
Equipped with a manual primer bulb for fast fuel priming. It effectively removes air from the fuel line and pre-fuels the carburetor, ensuring easy starting, especially for cold starts.
Dual-arm Brake System
Dual-arm brake system with enlarged guard brake surface for quick stopping and enhanced safety.
Made from 100% Virgin Plastic Pellets
Featuring higher rigidity, heat resistance, impact resistance and excellent dimensional stability.It greatly improves durability and structural stability for heavy-duty working conditions.
Product Comparison
Discover More Difference
Neo-tec NH843 43cc Best Gas Chainsaw, 16 inch Great All-Around Chain Saw
$134.99 USD
Neo-tec NS846 45cc Gas Chainsaw with 16 inch Chainsaw Bar and Chain
$139.99 USD
NEOTEC NCS5800 58CC Gas Chainsaw 18" & 20" Bar Easy Start for Tree Trimming & Wood Cutting
$149.99 USD
NH843-16US
SKU
NS846-16US
SKU
NCS5800
SKU
2-Stroke
Engine Type
2-Stroke
Engine Type
2-Stroke
Engine Type
42.8cc
Displacement
45.4cc
Displacement
54.5cc
Displacement
2.0kW/ 2.7HP
Max Power
2.1kW/ 2.8HP
Max Power
2.2kW/ 3.0HP
Max Power
11000rpm
Maximum Engine Speed
with Cutting Attachment
with Cutting Attachment
11000rpm
Maximum Engine Speed
with Cutting Attachment
with Cutting Attachment
11000rpm
Maximum Engine Speed
with Cutting Attachment
with Cutting Attachment
3000rpm
Maximum Engine Speed
at Idle Speed
at Idle Speed
3000rpm
Maximum Engine Speed
at Idle Speed
at Idle Speed
3000rpm
Maximum Engine Speed
at Idle Speed
at Idle Speed
Pull Start
Start Type
Pull Start
Start Type
Easy Start
Start Type
FB 25:1 Fuel-Oil Mix Ratio,FD 40:1 Fuel-Oil Mix Ratio
Fuel to Oil Mix
FB 25:1 Fuel-Oil Mix Ratio,FD 40:1 Fuel-Oil Mix Ratio
Fuel to Oil Mix
FB 25:1 Fuel-Oil Mix Ratio,FD 40:1 Fuel-Oil Mix Ratio
Fuel to Oil Mix
🌳 Home Pruning
Application
🌳 Home Pruning
Application
🌳 Gardening + 🪵 Light Logging
Application
20 mins
Full-Load Running Time (Lab-Tested Reference)
13 mins
Full-Load Running Time (Lab-Tested Reference)
17 mins
Full-Load Running Time (Lab-Tested Reference)
Aluminum alloy
Crankcase Materials
Aluminum alloy
Crankcase Materials
Aluminum alloy
Crankcase Materials
Rubber Buffer
Shock Absorption System
Rubber Buffer
Shock Absorption System
Rubber Buffer
Shock Absorption System
Aluminum Rubber Non-Slip Grip
Handle Bar
Aluminum Rubber Non-Slip Grip
Handle Bar
Aluminum Rubber Non-Slip Grip
Handle Bar
Speed-Sensing Automatic Oil Pump
Oil Pump
Speed-Sensing Automatic Oil Pump
Oil Pump
Speed-Sensing Automatic Oil Pump
Oil Pump
7Tx 0.325
Sprocket type
7Tx 0.325
Sprocket type
7Tx 0.325
Sprocket type
16”/40cm
Max Cutting Diameter
18”/45cm
Max Cutting Diameter
22”/55cm
Max Cutting Diameter
14”，16”
Recommended Guide Bar Size
16”，18”
Recommended Guide Bar Size
18”，20”
Recommended Guide Bar Size
12 Month Consumer / 3 Month Commercial
Warranty
12 Month Consumer / 3 Month Commercial
Warranty
12 Month Consumer / 3 Month Commercial
Warranty
FAQS
Cold Start
- Add fuel (fuel mixing ratio: 25:1).
- Close the choke. If the machine is equipped with a primer bulb, press it 3–5 times until the bulb is filled with fuel.
- Pull the starter rope 3–5 times.
- After hearing two “coughing” sounds,
- Open the choke.
- Pull the starter rope to start the machine.
Hot Start
- Open the choke.
- Pull the starter rope to start the machine.
The issue may be caused by an incorrect fuel mixture, spark plug problems, or a clogged carburetor.
- Check whether the fuel mixing ratio is 25:1. If not, adjust the fuel mixture to 25:1.
- Check whether the fuel line is bent or blocked.
- Check whether the spark plug is sparking properly.
- Check whether the engine is flooded.
- Check whether there is a carburetor malfunction.
- Confirm whether the spark plug is producing a spark: Remove the spark plug, connect it to the ignition coil, and place the spark plug electrode in contact with a metal part of the machine. Pull the starter rope and observe whether the spark plug produces a spark during starting.
- Check the electrode gap. The correct gap is 0.5–0.7 mm (approximately the thickness of a credit card).
- Clean oil residue and debris from the surface of the spark plug.
- If the engine still does not start after completing the above steps, replace the spark plug with a new one.
- Check whether the high-voltage wire (ignition coil lead) is damaged.
- Remove the spark plug.
- Turn the machine upside down.
- Pull the starter rope.
- Drain the excess fuel from the cylinder.
- Remove the air filter.
- Use an air blower to remove dust or debris from the air filter.
- If it cannot be cleaned or has been used for a long time, replace the air filter.