General Workshop Safety Guide

Machine class: all machine classes. This guide applies across every class we cover — chainsaws, brush cutters, blowers and trimmers — and covers the workshop or store where they are serviced, fuelled and kept, whatever mix of machines you run. Each machine also has its own repair, precautions and health-and-safety guide; this one is about the space you work in, not the machine in your hands.

Safety disclaimer. This is general guidance, not a substitute for your machine's own manual, your local regulations, or proper training. Where a figure would be specific to your machine or to your premises — a torque value, a quantity, a fire-rating — we have not invented one. Work beyond your competence belongs with a qualified technician or a licensed contractor. Pentales Agro is an independent distributor with no Stihl or Husqvarna agency.

Most injuries in a small-engine workshop are not caused by the machines. They are caused by the fuel in the corner, the engine run indoors to test it, the parts stacked above head height, and the extension lead lying in a puddle. A workshop handling petrol two-stroke equipment concentrates several hazards into a small space, and they interact: fuel plus exhaust plus a hot muffler plus dry vegetation is a different risk from any one of those alone.

Fuel Storage and Handling in a Workshop

Petrol is the most dangerous material in a typical repair workshop and the one most often stored casually. The quantities involved are usually small, which is precisely why the rules get relaxed.

Store fuel in purpose-made containers, sealed, upright, in a cool ventilated place, away from any ignition source and out of direct sunlight. Never in a food or drink container, never in a plastic bottle, and never somewhere a child or an animal can reach. The shape of a drinks bottle is a genuine hazard: it invites someone to drink from it.

Keep the quantity in the workshop to a minimum. Petrol degrades in storage, so a large stock is a liability with no benefit. Store the bulk of your fuel away from the work area, ideally in a separate ventilated store, and keep only a working quantity indoors.

Never store fuel near a hot machine, a battery charger, a welder or a grinder. Sparks from any of these can ignite vapour, and vapour is the hazard rather than liquid fuel. Petrol vapour is heavier than air and travels along the floor towards ignition sources, including drains and pits.

Ventilate any space where fuel is decanted or where machines are refuelled. Decant outdoors or at an open door, never in a closed room. Vapour accumulates at floor level and in low corners, and a workshop's low corner is often where a machine is being worked on.

Label containers clearly and keep them for their purpose. Using a fuel container for waste oil, or an oil container for fuel, is how the wrong fluid ends up in a tank. Keep separate, clearly marked containers and separate funnels for fuel, bar oil and waste.

Never siphon fuel by mouth. Use a pump or a proper siphon, and never use a length of hose and lung pressure. Petrol drawn into the lungs causes chemical pneumonitis, which is a serious injury from a very small volume.

Never refuel a hot or running machine inside the workshop. Wheel it outside, let it cool, refuel on bare ground, and wipe up any spill before bringing it back in. Alternatively, refuel cold machines outdoors before work rather than at the end of a session.

Keep a spill kit and use it immediately. Absorbent material, a container for the used absorbent, and rags. A fuel spill in a workshop creates both a fire risk and a slip hazard, and a spill left on a sealed floor will spread vapour across the room. Do not wash fuel into a drain.

Ventilation, Exhaust and Never Running Engines Indoors

Testing a repaired machine by running it is a normal part of the work and one of the most dangerous habits in small-engine repair. The exhaust contains carbon monoxide.

Never run a petrol engine inside a workshop, a shed, a garage or any enclosed space. Carbon monoxide is colourless and odourless, and it causes headache, nausea, drowsiness, loss of consciousness and death without the person involved recognising what is happening. Opening a door is not adequate ventilation: a machine run just inside a doorway can produce dangerous concentrations in the enclosed part of the room, and the person affected is often the one at the bench rather than the one holding the machine.

Run engines outdoors, in the open air, away from doors, windows and air intakes. Position the machine so the exhaust blows away from the building and away from anyone else. If your premises do not have a suitable outdoor area, that is a reason to reconsider the work you do there rather than a reason to compromise.

Do not use a running engine to warm a workshop, and do not idle machines indoors for convenience while you do something else.

Recognise the symptoms and act on them. Headache, dizziness, nausea, drowsiness, confusion or a feeling of unreality affecting anyone in the workshop while an engine has been running nearby is a carbon monoxide emergency. Get the person into fresh air immediately, call for medical help, and do not send anyone back inside to switch off the machine. In Mauritius, the national emergency numbers published by the Prime Minister's Office are Police 999, Mauritius Fire and Rescue Service 115, and SAMU (ambulance) 114.

Ventilate for fuel vapour, dust and solvents as well. Cleaning carburettor bodies in solvent, brushing out dusty machines and decanting fuel all release vapours or particulates into the air. Work near an open door or a fan that extracts to the outside rather than recirculating.

Never use welding, grinding or cutting equipment near a machine with fuel in it. Drain and remove the fuel system, or move the work outdoors and well away, before any hot work.

Lifting and Moving Machines and Parts

Back and hand injuries are more common in workshops than cutting injuries, because parts are heavy, awkwardly shaped and handled repeatedly.

Keep heavy items between knee and shoulder height where you can. Cylinder and piston kits, engine assemblies, gear heads and boxes of parts should live at working height on a bench or a shelf, not on the floor and not above head height. A workshop that stacks parts overhead produces two hazards: strain on lifting down and impact injuries on dropping.

Do not lift with a twisted or bent back. Face the load, keep it close to your body, bend at the knees and lift smoothly rather than with a jerk. A chainsaw engine is a dense weight in a small package, and the natural instinct to lift it with straight legs while twisting to place it on a bench is exactly the movement that injures a lower back.

Use a trolley or a second person for anything awkward. Machine assemblies, drums of oil and boxes of stock are all easier and safer with a trolley. There is no prize for lifting something alone.

Beware of sharp edges on parts you are handling. Cylinder fins, blade edges, sheet-metal covers and broken components cut. Wear gloves when moving stock and when handling blades, and store blades with a cover or in a rack rather than loose in a box.

Store long items — shafts, tubes, bars — where they cannot slide or fall. A bar or a shaft tube stood against a wall falls, and it falls onto feet. Rack them horizontally or in a proper stand.

Keep walkways clear of trip hazards. Hoses, cables, shafts, bar oil cans and dropped fasteners are all trip hazards in a confined space. Clear up as you work rather than at the end.

Fire Risk, Extinguishers and Dry Vegetation

A workshop containing fuel, oil, dry debris and hot machinery is a fire risk in a way that is easy to underestimate, particularly in a dry tropical climate.

Know what the fire risks are and where they are. Fuel and solvent stores, oily rags, dust and dry vegetation around the building, hot mufflers on machines brought in from work, and electrical faults. Each has a different response and a different extinguisher.

Fit extinguishers and keep them accessible. At minimum, suitable extinguishers for fuel and electrical fires, positioned near the exits and near the fuel store, mounted on brackets rather than stored behind things. Check them periodically, and know how to use one — reading the label during a fire is too late.

Match the extinguisher to the fire. Water is appropriate for solid materials, but it spreads burning petrol and it is dangerous on live electrical equipment. Dry powder and foam are appropriate for fuel fires; carbon dioxide is appropriate for electrical fires. If you keep only one type, keep dry powder for a fuel-heavy workshop and understand its limitations.

Never use water on a fuel fire. It spreads the fuel, and a fuel fire that spreads across a workshop floor is a different and much worse event than the fire you started with.

Keep dry vegetation away from the building. In a country with a dry season and abundant cane trash and leaf litter, vegetation against a workshop wall is a route for a small fire to become a building fire. Clear a margin around the building and keep it clear.

Let machines cool before bringing them inside. A machine that has just been run has a muffler hot enough to ignite dry plant material or fuel vapour. Leave it outdoors to cool and to be cleaned down before it goes into the workshop or onto a shelf.

Store oily rags in a closed metal container. Rags soaked in oil or solvent can self-heat and ignite. Lying in an open bin, they are a genuine and commonly overlooked fire source.

Do not smoke or use any naked flame in the workshop or fuel store, and put up signs where the risk is not obvious to others.

Tool, Bench and Sharp-Edge Safety

Tool injuries in small-engine work are usually the result of using the wrong tool or a damaged one, and they are avoidable with a small amount of discipline.

Use the correct tool for the fastener. A worn screwdriver, an undersized Allen key or an adjustable spanner where a ring spanner belongs all damage the fastener and slip, and a slipping tool drives the hand into whatever is behind it. Keep drivers in good condition and replace worn ones rather than grinding them.

Never use a screwdriver or a punch as a lever or a drift. Locking an engine with a screwdriver through the plug hole is the classic example — it breaks pistons and ring lands, and it also injures hands when it slips.

Support the work properly. A machine clamped or supported so it cannot move is safer than one held in one hand while the other applies force. A brush cutter shaft on a bench, a chainsaw held in a proper stand, or a part held in a soft-jawed vice all prevent the slipping injury.

Keep cutting tools sharp and stored safely. A blunt blade requires more force and slips more readily. Store blades, chain loops and sharpened components so the edge cannot be contacted accidentally, and never leave a sharpened blade loose on a bench.

Use eye protection in the workshop as a matter of course. Grinding, brushing with a wire brush, using compressed air and handling spring-loaded assemblies all throw particles. Safety glasses in a workshop should be treated as ordinary clothing, not as equipment for special tasks.

Be careful with compressed air. Never direct it at your own or anyone else's skin — air injected under the skin is a serious injury — and never use it to blow dust off clothing or to clean a machine that still contains fuel.

Watch spring-loaded assemblies. Clutch springs, recoil starter springs, spool springs and clips release stored energy when a cover is removed. Hold covers as you undo them, release the spring slowly, and work over a tray so that a spring that does fly off is recoverable and visible.

Electrical Safety and Battery Charging

Electrical faults and battery charging introduce risks that a fuel-focused workshop often overlooks.

Use the correct lead and check it before use. An extension lead used with a grinder or a charger should be rated for the current, fitted with an earth where required, and inspected for damage. A lead with a taped repair or a cracked plug should be replaced, not repaired.

Keep leads and chargers clear of water, fuel and puddles. In a wet-season workshop, water finds its way in. Electricity and water on a concrete floor is a lethal combination, and a lead lying in a puddle is a fault waiting for someone to touch it.

Do not run power tools from a makeshift connection. Multi-plugs feeding multi-plugs and adaptors in a workshop are a fire risk as well as a shock risk. Use a proper distribution board with protection.

Charge batteries in a ventilated place, on a non-combustible surface, and not unattended for long periods. Charging batteries can release flammable gas and can overheat. Do not charge batteries next to fuel, oily rags or solvent.

Isolate before working on anything electrical. Switch off and unplug before opening a machine, and do not assume a machine is dead because a switch is off.

Keep battery terminals and leads clean and tight. Poor connections overheat. This is the most common cause of electrical faults in small-engine equipment and it is also a fire risk.

Housekeeping, Spill Response and Waste

Housekeeping is not tidiness for its own sake. In a workshop handling fuel, oil and sharp parts, it is the control that prevents most slips, cuts and fires.

Clean as you work. Clear swarf, spilled oil and dropped fasteners from the bench and floor as they happen rather than at the end of the job. Oil on a sealed floor is extremely slippery, and a dropped fastener underfoot rolls.

Deal with spills immediately and properly. Absorb spills with suitable material, put the used absorbent into a closed container, and dispose of it correctly. Never wash fuel or oil into a drain or onto the ground, where it contaminates soil and watercourses and creates a fire risk.

Separate your waste streams. Waste oil, waste fuel, used filters, oily rags, contaminated absorbent and general waste each need their own container. Waste fuel in particular should never be poured away or used as a cleaning agent or a fire lighter.

Keep waste containers closed and labelled, and store them away from the workshop's ignition sources and from any machine being tested.

Do not let oily rags accumulate. They are a self-heating fire risk and need to be in a closed metal container rather than a bin or a heap.

Keep the floor clear of trip routes and the bench clear of clutter. A workshop with clear floor and clear bench is one where someone can step back from a spilled fuel container quickly, which is the practical value of housekeeping.

First Aid Preparedness and Emergency Numbers

Preparing for an injury before it happens is the part of workshop safety that most affects the outcome, particularly in a small business with few staff.

Keep a properly stocked first aid kit, and know where it is. For this kind of work it needs to include dressings large enough to control serious bleeding from a blade or line cut, an eye wash or sterile eye irrigation, burns dressings, and plasters.

Know the emergency numbers and display them. In Mauritius, the national emergency numbers published by the Prime Minister's Office are Police 999, Mauritius Fire and Rescue Service 115, and SAMU (ambulance) 114. Put them where everyone can see them, including visitors.

Know the route to the nearest medical facility and, if you work with others, make sure more than one person knows it. The person who knows the route may be the one who is injured.

For serious bleeding. Apply firm direct pressure with the cleanest material available and keep the pressure on without repeatedly lifting the dressing to look. Elevate the limb if you can, keep the person still and warm, and call 114. Do not spend time cleaning or dressing the wound in the workshop — the priority is pressure, calling for help and transport.

For eye injuries. Do not rub the eye and do not attempt to remove anything embedded in it. Irrigate with clean, low-pressure water and get to medical care urgently. This is the most common serious workshop eye injury and it needs proper assessment.

For burns. Cool with clean, low-pressure water for as long as comfort allows, do not apply oils, fats or creams, cover loosely and seek medical attention for anything beyond a small superficial burn.

For fuel exposure. Remove contaminated clothing immediately, wash the skin with soap and water, and keep the person away from ignition sources. If fuel has been swallowed or inhaled, do not induce vomiting and call 114 for advice — petrol in the lungs is a serious injury even in small quantities. If someone is showing signs of carbon monoxide exposure, get them into fresh air and call for help rather than letting them return indoors.

Record what happened. A short written note of any injury, near miss or spill, with what caused it, is what turns a workshop into a safer one. Most of the controls in this guide exist because something went wrong somewhere first; recording your own near misses is how you find the ones specific to your premises.

Parts for every machine class we cover — chainsaw parts, brush cutter parts, blower parts and trimmer parts, including carburettor kits, fuel lines and filters, ignition components, clutches, heads, blades, guards and anti-vibration mounts — are listed in our catalogues: chainsaw parts, brush cutter parts, blower parts and trimmer parts. Fuel containers, extinguishers, first aid supplies and eye wash are not sold through our parts catalogue; buy them from suppliers who can state the standard or rating they meet, and check extinguishers periodically rather than assuming they will work when needed.