Print Page

Service Emissions Testing

Equipment World's Service Department Technician's offer Emission Level Testing:

Click to view/print Emissions Testing Flyer

Carbon monoxide (CO) is a dangerous gas produced by gasoline and propane powered forklift trucks. When forklifts are operating or idling, they continuously produce CO gas. Poisoning can occur when forklift exhaust is not removed from the working environment.DO YOU KNOW YOUR CARBON MONOXIDE EMISSION LEVELS?

Watch for CO poisoning if gas or propane forklifts are used in the following situations:


          • In cold rooms, controlled atmosphere rooms, truck trailers or shipping containers
          • In sealed warehouses during fumigations
          • In warehouses or enclosed areas that do not have enough fresh air
          • When loading trucks that have their engine running.
            Both the forklift and the truck add carbon monoxide to the air. Carbon monoxide builds up when forklifts are used indoors without enough fresh air.
You cannot detect carbon monoxide. It is odorless, tasteless and colorless. You can be around very high levels of carbon monoxide and not realize there is a problem. Risks increase during the Colder Weather as fresh air exposure is much more limited.

image Exhaust Emissions and Your Health

 CARBON MONOXIDE (CO) - Carbon Monoxide is often called “the silent killer”, because it gives no clear warning to its  victims. It is an invisible gas with no taste or smell and it will not cause any unusual feeling in the nose, mouth or throat as it is  breathed in. The first effects that are noticed are headache and faintness.

 HYDROCARBONS (HC) - Hydrocarbons are a major component of smog. It can irritate the eyes, damage the lungs, and  aggravates respiratory problems. A number of exhaust hydrocarbons are also toxic, with the potential to cause cancer.

 NITROGEN OXIDES (NOx) - Nitrogen Oxides, like hydrocarbons are a component to the formation of ozone. They also  contribute to the formation of acid rain.

 CARBON DIOXIDE (CO2) - Carbon Dioxide does not directly impair human health, but it is a “green house gas” that traps the  earth’s heat and contributes to the potential of global warming.

Occupational Health and Safety

     VENTILATION - Ventilation must be provided in the work environment to limit the exposure of workers to carbon monoxide to the time-weighted average concentration of 35 parts per million (ppm) for a normal 8 hour workday or 40 hour work week. In addition, any short-term (ie., within a 15 minute period) exposure shall not exceed a concentration of 400 ppm of carbon monoxide. There are a number of carbon monoxide testers on the market that can be installed in the work area to monitor carbon monoxide ppm. Carbon monoxide tends to build up in poorly ventilated areas of the workplace. This can happen in semi-enclosed workplaces, where tarpaulins and plastic sheeting are used for shelter.


     Breathing carbon monoxide may make you feel like you have the flu. Symptoms include: Headache - Nausea - Dizziness - Rapid breathing - Unconsciousness - Death

     When you are poisoned by carbon monoxide gas, you may feel weak and too confused to escape the area. Find fresh air and medical attention as soon as you feel sick. Don’t wait. If you notice co-workers who are sick, help them find fresh air.

     The harmful effects of CO depend on the amount that is in the air and the length of time that you breathe it. High amounts of CO may make you sick right away; low amounts of CO may make you sick after breathing it for many hours.

Regular Maintenance will help reduce emissions

     Emission testing is not the only way to help reduce emissions. By being set up on a regular maintenance schedule (PM Service), you can prevent unnecessary emissions and premature wear on your engine. Keeping the ignition system in top shape and regular replacement of filters, fluids and PCV valve is the key to a clean running lift truck. Catalytic Converters are also available, as they help reduce toxic emissions by up to 90% by allowing the exhaust gases to burn more completely (reduces HC to H2O and CO2).

NOTE: A worn engine will emit excess emissions regardless of the condition of the tune up parts.  




    Fuel economy is best when CO is near 0.5%. Any CO above the 0.5% level indicates wasted fuel. In fact, every 1% of CO above the 0.5% target level indicates a forklift is wasting 3% to 5% of its fuel. To get a good CO profile of the forklift, testing should be done at three different operating conditions. The first test is the CO at idle. The second test is the CO at cruise. The third CO test is done at full load. Then calculate the average CO of these three tests.

With average CO and the graph below, fuel savings can be determined. The gallons of fuel saved per year for one forklift running on one shift is shown. For example, a forklift with CO lowered from 5.5% CO to 0.5% CO will save about 460 gallons of fuel per year. Both fuel costs and CO emissions are lowered.


Toyota Electric Forklift Trucks are an excellent alternative to lower your emissions. 
CLICK on Picture Below to view PDF version

Click to view/print Toyota Electrics Flyer