Hitachi Cg22easslp Gas Oil Ratio

Page 15 English Air filter (Fig, 32) Spark plug (Fig. 34) The air filter must be cleaned from dust and dirt in The spark plug condition is influenced by: order to avoid: O An incorrect carburetor setting O Carburetor malfunctions O Wrong fuel mixture (too much oil in the gasoline) O Starting problems O A dirty air filter O Engine power reduction. Oil or from oil to gas because the ratio of CO 2 emissions from coal, oil, and gas is 10: 8: 6 respectively. The efficiency of electricity generation using a simple-cycle gas turbine fueled by gas is approximately 35%. Other methods for increasing energy efficiency include converting the generation system to use CCGT.

The CS33EB16 16-Inch 32.2cc 2-Stroke Gas-Powered Rear Handle Chain Saw is manufactured by Hitachi, which also owns the Tanaka brand.

Powered by Hitachi’s PureFire 2-stroke engine, the company has come up with a lightweight design which provides an excellent power to weight ratio for optimum performance.

In this review we’ll look in detail at what’s good and not so good about this saw so that you can decide if it’s right for you.

Carry on reading to discover more.

Performance and Handling


According to Hitachi’s marketing information, the CS33EB16 is a commercial grade saw designed for both professional and homeowner use. That’s a pretty bold claim to make which would put it alongside some big name products. So how does it stand up to scrutiny?

For a gas saw it is reasonably light (weighing around 11lbs.), which means that it offers a decent power to weight ratio. The weight also makes it a pretty easy saw to handle, as does the saw’s five point anti-vibration system designed to increase user comfort. Front handle vibration is measured at 9.2 m/s² and rear handle at 6.7m/s². These values fall into the medium range (anything below 5 m/s² is considered low, 10 m/s² and above high. At these levels you should limit the amount of time spent cutting and should only spend around 35 minutes in each hour period using the saw. These levels do seem on the high side but the figures have been supplied by the manufacturer and so there is no reason to doubt them. If you suffer from any hand complaints, this saw may not be for you. Wearing anti-vibration chainsaw gloves is definitely recommended.

Hitachi Cg22easslp Gas Oil Ratios

In conclusion, if you are used to using similar tools, you will find the Hitachi very manageable.

One complaint with many gas saws is that they can sometimes be difficult to start. This isn’t an issue with this saw with consumers advising that it starts easily. A lot of the literature states that there is a purge prime bulb to help with this. This is not correct. To start you simply need to flick the ignition switch to ON, pull the choke lever into position and then pull the starter cord. When the first ignition is heard, the choke is returned to its original position and the recoil starter pulled again.

The manufacturer advises that it produces a noise level at the operators ear of 92 dB(A). Whilst this isn’t overly noisy for a gas powered saw, prolonged exposure to noise at these levels can lead to hearing damage so if you plan on doing any lengthy cutting, ear protection is recommended.

So what is this chainsaw capable of doing? It is designed for light and medium duty cutting. User feedback suggests that it is easy to use and cuts small and medium sized trees quite well. If you’re cutting wood with a diameter up to 10 inches, you won’t have any problems. However, some users did report that when cutting larger pieces the lack of power meant the saw got a little bogged down and tended to overheat. Other uses also mentioned that the saw lacked the power to support a 16 inch bar and that a 14 inch bar (a 14 inch version is available) is more appropriate.

In summary, it is hard to make a case that this is a commercial grade chainsaw. It struggles when tackling more demanding tasks. That said, it has an excellent power to weight ratio and performs well when carrying out light duty tasks.

Cutting Equipment

The CS33EB16 is equipped with a 16 inch Oregon bar and chain. As indicated above this model is available with a 14 inch bar (CS33EDTP).

Both sized bars are designed for lower kickback and have a sprocket nose. This helps the chain to turn more easily around the bar for better cutting. When maintaining the bar, users will need to grease to sprocket hole at the tip of the bar on a regular basis. You can buy a grease syringe for around $10 to do this.

The chains are also Oregon made. They are low kickback chains with 3/8” pitch and 0.05” gauge (thickness). This is the most popular sized chain currently available as it is both reasonably strong and offers good cutting performance.

The saw has a chain brake (see Safety Features section) and the chain speed is almost 24 m/sec which is reasonable for a saw in this class.

Keeping the chain correctly tensioned is a simple operation requiring use of the tool provided with this purchase. The two bar cover nuts on the side of the saw are loosened and the tension screw (also on the side of the saw) is turned to tighten or loosen as required. This shouldn’t take more than a couple of minutes. As with all new saws, the chain will stretch more when new so users should pay particular attention to the cutting components during the first 30 minutes or so of use.

Ensuring that the chain is kept sharp is also critical for good performance. This should be done professionally if you have no experience of this. Alternatively, if you are used to sharpening your own chains or think that this is something you could learn (Read our article: What size chain do I need for my chainsaw which covers this subject in more detail) then you will need a 5/32” (4mm) round file and holder together with a flat file and guard.

Design and Construction

The Hitachi CS33EB16 has a traditional rear handle design. The outer casings are made from hard plastic (which helps keep the weight down) and the engine has a chrome plated cylinder and forged steel connecting rod, plus a heavy duty oiler for extra durability.

The picture below provides a view of the left side of the saw. There are no unusual features here. The trigger switch and lockout levers are on the rear handle. Both the oil and fuel tank caps are large and easily accessible which should make filling up easy. There is a full wrap front handle which allows easy cutting at different angles and just in front of this a hand guard, which when pushed forward acts as the chain brake.

The image below shows the position of the ignition switch and choke lever. As part of your maintenance program you will need to occasionally clean the air filter and spark plug. Access to this is straightforward and users simply need to turn the locking button to remove the cover.

The final image shows the position of the bar cover nuts and tensioning screw.

The saw does not come fully assembled. You will need to attach the bumper spikes (optional) as well as the bar and chain. Full instructions are provided on how to do this.

32cc PureFire Engine

Power is provided by Hitachi’s 32.2cc PureFire 2-stroke engine, designed for lower emissions. It is able to provide 1.6 HP and whilst this is okay, it doesn’t really justify the ‘commercial grade’ tag.

In terms of fuel, you will need to use a mix of gas and genuine 2-cycle oil. The manufacturer recommends a ratio 50:1. The gas should be a minimum 89 octane (the higher octane the better) and have a low or no ethanol content. High ethanol content in fuel has been known to damage engine components and at the very least will result in poor performance. Using a premix oil is an option if you are uncertain about the type of fuel to use.

The fuel tank capacity is 0.75 US pint and the fuel consumption is rated at 500 g/kWh. In effect this means that you will use around 0.8 liters (0.2) gallon per hour when the saw is at minimum revs of 3,100 rpm. The maximum revs on this saw is 12,500 rpm.

Chain Oil System

Another important aspect of chainsaw operation is keeping the cutting components properly lubricated. The Hitachi has an automatic oiling system so users don’t need to remember to manually release the oil to the bar.

A good quality bar and chain oil should be used and this is added through the cap on the side of the saw. The oil reservoir itself has a capacity of 8.5 oz. (250ml), which is a decent size compared to other saws.

A couple of reviewers mentioned that the CS33EB16 leaks a lot of oil during storage. This is a problem which affects many saws and if you find your saw leaking, the best solution is to ensure you drain the tank before storing.

Safety Features

The CS33EB16 is equipped with a variety of safety features, including:

  • Oregon bar and chain designed to reduce kickback.
  • A chain brake which will activate in the event of serious kickback. The brake is activated by pushing the front hand guard into the forward position. It is designed to stop the saw immediately.
  • Chain catcher. This small device on the underside of the saw is designed to stop a slipped or broken chain hitting the operator.
  • Hand guards which prevent the operator’s hands from coming into contact with both the chain and any flying debris.
  • Throttle trigger lockout switch which prevents the accidental operation of the throttle trigger.
  • Spiked bumper. This acts as a pivot when in contact with the log to provide more stable cutting.

Whilst the safety features will help to keep the operator safe to an extent, it is recommend that appropriate safety gear is worn at all times. This, along with the proper operation of the saw will ensure the user remains safe.


One of the Hitachi’s unique selling points is its good power to weight ratio. This saw weighs 8.4 lbs. without the cutting equipment. With the cutting equipment attached the weight will be around 11lbs. which is one of the lightest gas saws you will find on the market for sale.


The CS33EB16 comes with an operator’s manual, guide bar cover and tool to be used when changing the spark plug and adjusting chain tension.

• Very light for a gas saw

• Good power to weight ratio

• Starts well

Hitachi Cg22easslp Gas Oil Ratio Chart

• Automatic oiling system

• 7 year warranty

• Slightly underpowered with 16 inch bar

• Can overheat during heavy cutting

• Leaks oil during storage

Consumer Ratings

There are over a hundred reviews online for the Hitachi, with almost 70% rating the product as either excellent or good.

Users liked the fact that the saw is lightweight and easy to handle, as well as the fact that it is easy to start. Consumers were also pleased with its performance, especially on smaller cutting tasks.

Some consumers felt that the saw is a little under-powered with the 16 inch bar and chain and that the 14 inch bar is more appropriate. Others mentioned that the saw can overheat when making more demanding cuts on larger logs and trees so care should be exercised not to over tax this saw.

You should buy this saw if:

• You want a gas saw for light cutting duties

• You want a lightweight, manageable gas saw.

You should not buy this saw if:

• You have a lot of heavy duty cutting

Price and Recommendation

​Check out price on Amazon.

Last Updated on December, 5th 2020

Hitachi Power Tools has recently changed their brand name to Metabo HPT (Hitachi Power Tools). Hence, the change in Hitachi CG23ECPSL’s name to Metabo HPT CG23ECPSL as well. Do not be alarmed if people start calling it a different name. Despite the change in brand name, this little nifty power tool stays the same.

The Metabo HPT CG23ECPSL has been one of the top gas string trimmers on the market for years. It is actually the second longest commercial weed eater up to this day, next to the Tanaka TCG23ECPSL. Aside from its long length, there are a lot of astonishing features packed in this trimmer, which makes it a popular go-to gas string trimmer option for garden enthusiasts and professionals alike.

Read on for a closer look at the Metabo HPT CG23ECPSL


Brand nameMetabo HPT (formerly known as Hitachi)
Weight10.3 lbs
Engine22.5 cc PureFire 2-Stroke, CARB Tier III compliant
FuelNon-ethanol blended, high octane gas
Fuel Tank Volume16.2 fl oz
Operating RPM9,900 MAX
Sound level115 decibels



The Metabo HPT CG23ECPSL runs a 22.5 cc Purefire 2-stroke engine that has a power output of 0.93 HP. It turns at a maximum speed of 9,900 rpm. The Purefire system of the engine allows it to perform with a 70% decrease in fuel emissions and 30% increase in fuel efficiency. It also has an anti-vibration function which prevents the engine from overheating during prolonged hours of usage. It also allows the trimmer to perform heavy-duty tasks without having to worry about machine fatigue.

However, like any other 2-stroke engine, this powerful machine requires a mixture of gasoline and oil as fuel. It needs a 50:1 ratio of gas to oil. Luckily, premixed fuels are available in most retailers and shops, making it more convenient to top 2-stroke engine machines like the CG23ECPSL.

Sadly, it does produce emissions as well. But with the help of its Purefire system, emissions are greatly reduced without compromising effectivity of its performance. If that doesn’t make you relax, be assured that the CG23ECPSL has passed the emission level test before entering the market.


As mentioned above, the CG23ECPSL is the second longest commercial weed eater in the market. It also features a forged steel construction, making it durable and long-lasting. You would think that with all these features the equipment will surely be bulky and heavy. However, despite all these, CG23ECPSL is actually one of the lightest gas trimmers in the industry. It has a dry weight of 10.3 lbs, which makes it easy to handle and maneuver around your lawn for a long period of time without straining yourself too much.

Unlike most gas string trimmers in the market though, CG23ECPSL’s package deal does not include body straps or harnesses to help you carry the equipment around. For your safety, however, it does include safety glasses.


Despite being rather popular for its long shaft, the CG23ECPSL also has other features that make it the top choice of most customers worldwide. Let us take a closer look at several of its parts.


Metabo HTP CG23ECPSL has a 7mm stainless steel long, straight shaft with a length of 60 inches. It is the second longest weed eater in the market, next to Tanaka TCG23ECPSL which measures 70 inches. With its towering height, the equipment is definitely nifty in reaching neglected areas without the strain of having to bend down.

Cutting Head

The CG23ECPSL has a cutting width of 15 inches, which is relatively smaller than its competitor’s cutting range. Nevertheless, its cutting diameter is perfect for reaching hard-to-get areas.


The cutting head is also designed to work with attachments. The only downside to this is that it’s only compatible to four (4) Metabo HPT attachments. Nevertheless, this makes it a considerably versatile tool. It can transform into an edger, hedge trimmer, pole saw, or a mini-cultivator tool. To install them, all you have to do is remove the trimmer head and attach desired head.

String Line Feature

This model utilizes a unique semi-automatic string line feed, which adjusts on its own. It is programmed to feed string to the trimmer head accordingly when the string is almost out. This trimmer holds 13 ft of string that is 0.95 mm thick, which can last a while before you have to purchase a replacement for it. The string comes out in a dual line, meaning the trimmer cuts from both sides with two different strings rotating around its head.

S-Start Recoil Starting System

The CG23ECPSL features an S-Start Recoil System. It is programmed to start quickly with minimum effort. Unlike most gas trimmers, it relatively powers up with a pull or two. This user-friendly function saves you a lot of time and energy in starting your equipment.

  • Powerful performance delivery due to a capable gas engine with purefire function
  • Anti-vibration system that prevents engine from overheating
  • It features a Walbro carburetor
  • CARB Tier III compliant
  • The equipment is lightweight
  • Long, straight shaft with a length of 60 inches
  • 13 ft of 0.95 mm thick string with a semi-automatic loading
  • Versatile, Compatible with other attachments
  • Multi-purpose, transformable to other lawn maintenance tools
  • S-start recoil system for starting with minimal effort
  • It features a debris shield
  • Mixture of gasoline and oil for fuel
  • Despite passing emission test, it does still produce greenhouse emissions
  • A relatively small cutting width of 15 inches
  • Users report that the line feed is a little bit tricky
  • Cutting head is only compatible to Metabo HTP attachments

The Verdict

The Metabo HPT CG23ECPSL is a powerful gas string trimmer. Unlike other trimmers in the market, the CG23ECPSL is able to deliver high quality performance for a long period of time. It is equipped with various engine features that make it an effective and nifty weed eater.

It does, however, have its weaknesses and shortcomings such as a small cutting span and a limited interchangeable cutting head. As the saying goes, we cannot have it all. So if you are willing to overlook some of its minor cons, it can prove to be one of the best string trimmers that you can get your hands on.

Hitachi Cg22easslp Gas Oil Ratio Calculator

Frequently Asked Questions about Metabo HPT CG23ECPSL

Hitachi Cg22easslp Gas Oil Ratio

Q: Does the CG23ECPSL automatically feed the line?


A: Yes. It has a semi-automatic string loading. When the trimmer senses that the head needs more string, it automatically shoots out additional string to feed to the head.

Q: Can the CG23ECPSL be attached with a brush cutter head?
A: No. Sadly, this model is only compatible to four (4) Metabo attachments. For now, head attachments are only limited to turning your trimmer into an edger, hedge trimmer, pole saw, and a mini-cultivator tool. To install them, all you have to do is remove the trimmer head and attach desired head attachment.

Q: What kind of fuel is required?
A: This model runs on a 2-stroke engine; hence, it needs a mixture of both gasoline and oil for it to work. It requires a 50:1 ratio of gas to oil. You can use a non-ethanol blended, high octane gas like Tanaka oil. You can also purchase premixed fuel in the market if you are having a hard time figuring out the proper measurement for the mix or if you don’t want to do it yourself.

Q: Are there any accessories I should buy?
A: For added functionality of your CG23ECPSL, you can purchase head attachments from Metabo HTP as well. You can use these to turn your trimmer into other lawn maintenance tools. You should also consider buying a spare string for this model only holds 13 ft of string.

Q: Where can I buy the Metabo HPT CG23ECPSL?
A: You can easily purchase the Metabo HPT CG23ECPSL in Amazon.

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