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Tool Review – Biusine 14-inch Cordless Chainsaw Kit

The Biusine 14-inch cordless chainsaw kit comes with two 21V 6Ahr batteries, a charger with a European plug adapter, two 14-inch chains, a user guide, and a tool for installing and removing the chain. The user guide does not provide a lot of help for assembly. I try not to read the user guide, anyway. However, if you have never assembled a chainsaw, my video will provide additional details that are not included in the supplied user guide.

Safety First

Please note that this is for demonstration purposes only. You are responsible for your own safety and safe operation. Please refer to the included safety instructions. You are responsible for following safe practices when working. Safety is a mindset that needs to be applied to all areas and not just in the operation of tools. You could trip on something on the ground and get seriously injured. Be aware of your surroundings in your workspace as even turning around could result in hitting your head on something. Always be thinking about safety.

European Style Battery Charger

The battery charger supplied with my unit came with a European-style plug. The manufacturer indicated that this should not be the case when ordered. I have similar units, which use the same 21V batteries. I was able to use the charger for these batteries. Please note, that this is against the recommendation within the user guide. So please only use the battery charger supplied with the unit. If your unit did not come complete with the correct charger adapter, contact the manufacturer and they will supply you with the correct adapter.

Assembly of the Biusine Chainsaw

When I initially assembled the chainsaw, I had difficulty installing the cover. I eventually learned that it was due to the tensioner (barrel nut) that was not in the correct position. Inspecting the area where the wood chips are ejected, you can observe the tensioner and its relative position to the receiving hole within the bar. Once lined up it clicks into place with moderate force as demonstrated.

Properly Setting Chain Tension

You can attach the flanged nuts to hold the cover in place but you need to properly set the tension before torquing them down. Setting the tension of the chain is easy through a quick observation. As the chainsaw is resting level on your work surface, verify that the chain is not sagging in the middle of the bar. It should be very close to the bar. However, if you lightly tug on the chain of the underside of the bar and pull it you should notice a little slack in the chain. This is expected.

So, adjust the tension accordingly. Please note that a chain that has high tension will exert excessive force on the sprocket and motor shaft. This can result in excessive wear to the motor, electronics, and the sprocket at the end of the bar. And too loose of a chain can result in the chain flying off the bar.

Once your tension is set correctly, you can fill the reservoir with bar and chain oil. In the video, I use Toro bar and chain oil. Use the brand of oil you are happiest with but appropriate for a 14-inch chainsaw. Secure the oil cap in place and install the battery. You are now ready to begin cutting away.

Cutting Backwards

I began cutting but not really. The saw wasn’t digging into the wood. It was at that moment that I realized the chain was installed backward. It was an oversight I had during the installation. The teeth of the chain on the top of the bar must point away from the saw. The teeth dig into the wood and chip away at it. If the chain is installed backward, it will not dig into the wood. And if you continue to operate the saw in this manner for an extended time it can damage the saw.

My First Cut – Unit Failed

Once I corrected the orientation of the chain the saw cut well. But, then the unit failed and wouldn’t work after that. Every time I pressed the trigger you could hear a chirp from the motor. It was as if the motor was trying to turn but it just wouldn’t. I messaged my contact who provided the unit to me and they agreed to send a replacement unit. I reserved my judgment until I tried it with the replacement unit.

New Cordless Chainsaw Kit Arrived

Now that I have the new saw fully assembled, I used it and it cut great. I made more than 20 cuts with this second unit before I grew tired of cutting cookies out of a 6-inch log. I’m satisfied with the outcome and it showed that the manufacturer stands behind their product.

Future Comparison Video

I have many chainsaws to reference as benchmarks, both battery-powered and gas-powered. I am very happy with the Greenworks 24V chainsaw and will create a comparison video of these units. Other saws that I have include several mini chainsaws, a Homelite gas-powered, a Craftsman gas-powered, and a Greenworks 40V pruning pole chainsaw. And, I can borrow my neighbor’s Stihl gas-powered chainsaw for the ultimate comparison. If we’re comparing battery-powered only, then I’ll only demonstrate the Greenworks 24V against this saw.

My Thoughts – Biusine Cordless Chainsaw Kit

My thoughts about the Biusine chainsaw are that I love how dense the plastic feels. The cutting power seems strong and features an auto-cutoff feature to avoid overpowering the motor. I would appreciate a more detailed user guide with illustrations. Also, some extra effort should be put in for proper English translations. It tells me that the product was rushed without the necessary attention that could avoid tech support calls and reduced potential product returns due to possible customer confusion. I have been in the business of product development for over 30 years so I have vast experience not to mention strong opinions in this area.

One additional note that I have is that in my opinion, the batteries should include power level indicators so you know when it is time to recharge them. I already mentioned the incorrect charger that was provided so there’s no need to go into this further. Lastly, I have respect for a manufacturer willing to ship a replacement unit so quickly.

Where to Buy

The products used in this video are available on Amazon below.

“As an Amazon Associate I earn from qualifying purchases.”

Video Credits:
Video Production: U Do It™️ Studios a Division of No Cheese Records® LLC All Rights Reserved.

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