OBJECTIVES
Upon completing this lesson, you should be able to:
- List five names of Internal Combustion equipment.
- List the general steps, use of Internal Combustion equipment.
- List the general steps for maintenance of Internal Combustion equipment (before, during, and after their use).
- Describe the safety precaution of Internal Combustion equipment.
- Demonstrate in four practical exercises the correct use of Internal Combustion equipment.
1. NAME OF THE EQUIPMENT
HYDRAULIC CUTTER AND ENGINE
Use
- Cutting heavy-duty materials such as steel bars, rods, and pipes.
- Ideal for rescue operations, construction, and demolition tasks.
Specification
- Model: LS 511 EN
- Cutter Weight: 18.8 Kg / 41.4165 lbs
- Cutting Force Up to: 950 KN or 213,560 lbs
- Round Steel Material up to dia: 1.6″ / 41 mm
- Blade Opening: 5.9″ / 150 mm
- Dimensions L X W: 29 x 10 x 6.7″
Main Parts
- Hydraulic Cutter
- Hydraulic Regulator
- Hydraulic Engine
- Fuel Tank
- Hydraulic Oil Tank
- Upper / Front Handle
- Spark Plug
- Rear Handle
- Hose pipes with coupling male / female
Operational Safety
- Use Proper PPE
- Keep Work Clean
- Do not Use in the presence of flammable liquids & gases
- Use right tools & Accessories
- Handle tool with care
- Check the damage parts
- Work in proper position
2. NAME OF THE EQUIPMENT
HYDRAULIC ENGINE GENERATOR
Use
- Generating hydraulic power to operate rescue tools and equipment.
- Providing high-pressure hydraulic flow for cutting, spreading, and lifting operations.
Specification
- Model: GO-3T
- Engine Weight: 21.6 Kg
- Oil Capacity reservoir: 2 Liter
- Useable Oil Capacity: 1.8 Liter
- High Pressure: 0.65 Liter / min
- Power Pressure: 630 bar
Main Parts
- Fuel Tank
- Hydraulic Oil Tank
- Hydraulic Oil Gauge
- Engine
- Choke
Operational Safety
- Use Proper PPE
- Operate outside from the building or confined space
- Keep Work Clean
- Do not Use in the presence of flammable liquids & gases
- Handle tool with care
- Use right tool & accessories
- Check the damage parts
- Check the gauge of oil
- Work in proper position
- Keep Children away
- Use Guard against Electric Shock
Operational Procedure
- Use Proper PPE
- Keep Work Clean
- Start engine
Operational Procedure
- Open hydraulic oil
- When oil level is low, engine stops immediately
- Check the fuel / gasoline & oil
- Open fuel lock / valve
- If necessary operate with choke lever
- Pull starting cord handle
Common Problems
- Spark plug short
- Dirty air filter
- Oil and hydraulic oil low
Maintenance
Procedure | Time |
Check hydraulic / petrol oil use | Before each use |
Change engine oil | 25 Hrs or 3 months |
Replace air filter seasonally | 100 Hrs or seasonally |
Replace spark plug seasonally | 200 Hrs or seasonally |
3. NAME OF THE EQUIPMENT
FLAME CUTTER (PETROGEN)
Use
- Cutting through thick metal structures using a combination of gasoline and oxygen.
- Suitable for industrial metal cutting and emergency rescue operations.
Specification
- Gasoline Operated (Petrol + Oxygen)
Main Parts
- Oxygen Cylinder (pressure gauge, Main Valve, and O₂ regulator valve)
- Manual Lighter
- Accessories & Tool Box (with different size of tips)
- Petrogen (outlet valve, pressure gauge, and pump opening cover)
- Hoses pipes (Hose pipe of O₂ color – O₂ green and petrol red)
- Cutting Handle / Nozzle Handle
- Carrier Frame
Operational Safety
- Use Proper PPE
- Keep Work Clean
- Do not Use in the presence of flammable liquids & gases
- Use right tools & Accessories
- Handle tool with care
- Check the damage parts
Operational Procedure
- Use Proper PPE
- Assemble the flame cutter (select the desired tip size)
- Maintain proper position
- Release oil
- Spark with lighter
4. NAME OF THE EQUIPMENT
ROTARY RESCUE SAW (K-12)
Use
- Cutting through concrete, metal, and other hard materials during rescue operations.
- Ideal for firefighting, construction, and emergency response scenarios.
Specification
- Gasoline operated
Main Parts
- Front handle
- Guard
- Guard knob
- Starter grip
- Stop switch
- Choke
- Throttle catch
- Cutting head
- Cutting arm
Operational Safety
- Use PPE
- Keep work area clean
- Do not overreach
- Do not allow any source of heat near gasoline or fuel – Gasoline is extremely flammable
- Do not run saw with fuel leak
- Do not use any broken blades or wheel cutter
- Use the equipment in a well-ventilated area
- Carry the equipment with its blade facing back
- Stand firm and maintain balance while operating the equipment
Operational Procedure
- Use proper PPE
- Check the gasoline
- Slide the STOP SWITCH to the left
- Pull out the CHOKE (for cold start engine)
- Decompress the valve
- Take hold of the front handle using the left hand
- Place right foot on the lower section of the rear handle and press the power cutter against the ground
- Grip the STARTER HANDLE with your right hand and slowly pull the STARTER CORD out until you feel some resistance, now pull quickly and powerfully
Note: Do not pull out the STARTER CORD completely and do not release the STARTER HANDLE from fully extended position. This can damage the equipment - When the engine starts, quickly apply full throttle
- To stop – The engine is stopped by switching off the ignition by sliding the stop switch to the right
Solution for common troubleshooting
- Check fuel, spark plug, v-belt, or air filter
- Check decompression valve
Care and storage
- Use clean cloth or paintbrush for cleaning
- Always handle saw carefully and store them with the wheels removed
- Protect equipment from temperature and moisture
- For long storage, remove the gasoline
5. NAME OF THE EQUIPMENT
CHAINSAW
Use
- Cutting wood, trees, and other materials in forestry, construction, and rescue operations.
- Suitable for pruning, felling, and clearing debris in emergency situations.
Specification
- Engine: STIHL single cylinder two-stroke engine
- Displacement: 105.7 cm³ (6.47 cu. in)
- Bore: 58 mm (2.28 in)
- Stroke: 40 mm (1.57 in)
- Max. engine speed with cutting attachment: 8000 rpm
Main Parts
- Front Handle
- Front Handle Guard
- Oil Filter
- Oil Outlet
- Guide
- Chain Tensioning Screw
- Chain
- Guide Rail
- Nose Sprocket
- Rear Handle
- Rear Hand Guard
- Chain Symbol
- Sprocket
- Chain Tensioning Bolts
- Chain Tensioner Aperture
- Cover Plate
- Allen Bolt
- Release Flap
- On/Off Switch
- Lockout Button
- Chain Guard
- Serrated Travel Stop
- Oil Level Guard
- Automatic Lubrication Adjustment Screw
- Placement Surface
- Allen Key
Operational Safety
- Keep work clean
- Do not use power tools in damp or wet areas
- Do not use tools in the presence of inflammable liquids or gases
- Do not overreach
- Maintain TEA with care
- Disconnect tools when not in use, before servicing, and when changing accessories
- Avoid unintentional starting
- Stay alert
- Check damaged parts
- Use proper PPE and dress properly
Operational Procedure
- Be sure that the tool is switched off and unplugged before making any inspection of the TEA
- Before using the chainsaw, ensure it has enough oil to lubricate the chain
- Check the saw chain; it must not be too tight or too loose. Use only the adjusting knob screw to adjust the sharp saw chain
- Before plugging in the chainsaw, always check to see that the switch lockout and trigger actuate properly and return to the OFF position when released
- To start the machine, push the switch lockout and pull the trigger. Release the trigger or push the front handle guard to stop
- Secure the materials to be cut properly, ensuring they are laid on the surface for cutting
- Assume a stable position, not too close or far from the materials. Ensure footing is firm and feet are apart. Divide weight evenly on both feet
- Hold the chainsaw firmly with both hands
Care and Storage
- Use clean cloth or paintbrush for cleaning
- Protect equipment from temperature and moisture
- For long storage, remove the gasoline

Emma Lee, an expert in fire safety with years of firefighting and Rescuer experience, writes to educate on arescuer.com, sharing life-saving tips and insights.