Q: We just ran our saw for the first time and it appears to be leaking oil. Is this normal?
A: Our saws are set to pump up to four times more bar and chain oil than a standard chain saw. If you ran your saw without cutting anything, no residue was created to absorb the excess oil being pumped to lubricate the bar and chain.

After you shut off your saw, the unabsorbed oil fills the spaces between the cutters, the bearings in the sprocket nose and clutch, the nooks and crannies in the clutch cover, and around the clutch and in the bar rail groove. Gravity takes over, and during the next few hours the oil drains and pools under the saw. This is normal.

Because there are O-rings and oil seals in the saw, the possibility of a leak does exist. If you feel your saw is truly leaking oil, call our service department for further information at 1-800-433-3716.

Q: Do we have to use Cutters Edge Bar & Chain Oil and 2-cycle mix?
A: No. We recommend Cutters Edge oils because we formulate them with specific ingredients to offer the best protection in the fire rescue environment. For example, we add rust inhibitors to prevent rust and corrosion. We also add "anti-sling"/tackiness ingredients to make the oil cling to the bar and chain better than standard chain saw oils. Cutters Edge 2-cycle oil is a synthetic oil mixed at a lean, 100:1 ratio, which provides excellent protection and minimizes carbon buildup and power loss due to unburned oil in the fuel mix.
Q: If we don't use Cutters Edge oils will it void the warranty?
A: No, as long as any "branded" chain saw bar and chain oil or 2-cycle oil is used at the proper ratio.
Q: I've heard you should add kerosene or diesel fuel to the bar & chain oil to prevent tar buildup on the chain and clogging of the cutters. Is this right?
A: No! Under no circumstances should you add kerosene or diesel fuel to the bar & chain oil. The weight of the Bullet Chain and its chain speed creates higher operating temperatures than conventional saws and keeps any tars in a molten state. Because of the design of the BULLET cutter, the material is filed and not cut like conventional chains, so it does not matter if the gullet fills with tar and debris. The gullet spacing of the BULLET Chain is designed to allow sharpening of the carbide insert only. It is not a function of how the chain cuts.
Q: Your bar looks just like the bar on my chainsaw at home. What's so special about the Cutters Edge bar?
A: First, we use a high-grade alloy and thicker material than a standard chainsaw guide bar. And our bar body is a solid, single piece of material. The bar on your chainsaw is most likely three pieces of metal spot welded together.

Secondly, we utilize larger diameter bearings and a unique 8-rivet tongue and groove attachment method in our sprocket nose. If you look at most bars, you'll see smaller and fewer rivets with very shallow attachment points.

Standard chainsaw bars are made to cut primarily with the bottom rails of the bar. Most fire rescue cuts require plunge cutting with the nose. Standard chainsaw bars will not hold up to these plunge cuts, but our guide bars are designed to cut with the nose.

Q: How do I know if my chain tension is set correctly?
A: Your chain tension is set correctly is when the chain is as tight as possible, but still moves freely around the guide bar.

To check your chain tension be sure that your bar and chain are lubricated with bar & chain oil. Then, wearing gloves or using a rag to protect your hands, grab the chain on the top rail midpoint of the bar and the bottom rail midpoint of the bar. Aggressively pull the chain back and forth several times to be sure it is seated properly. Now, grip the chain on the top of the bar, as close to the engine as possible, and pull the chain to the nose of the bar firmly. If the chain moves smoothly, without hanging up or "catching," and you feel minimal resistance, your chain tension is correct. If it does feel like the chain is hanging up or catching and it is difficult to move smoothly, the chain tension is probably too tight. Adjust your chain and try again.

Another good test of proper chain tension is to grab the chain at the midpoint of the bar on the bottom rail and pull the chain away from the bar. You should be able to pull it so the tip of the drive link just clears the bar rail and when you let it go, it snaps crisply back into place. This is sometimes called "fiddle-string tight."

Q: We just finished cutting with our saw and noticed that the chain is loose. Is there something wrong with our chain?
A: Most likely this is just normal chain stretch. Be sure you followed the chain break-in procedures listed in your manual or, if you just replaced the chain, the break-in procedure for new chains listed in the box the new chain came in.

What you are probably seeing is one of two things:

  1. When you run your saw, the metal-to-metal friction of the chain on the bar creates heat, causing the metal to expand and making the chain droop below the bottom bar rail. If you wait until the chain cools, most of the droop you see will disappear as the chain contracts back to the proper tension. If the chain got really hot, it may not contract all the way back to proper tension. This is not unusual and you should re-tighten the chain.
  2. The rivets that hold the chain together are a softer metal than the body of the chain. The impact of cutting will eventually cause wear to the rivets and rivet holes, loosening the connection and causing chain stretch. This is normal and you should readjust your chain to the proper tension.
Be sure the chain is being lubricated properly and that there is oil in your oil tank. Lack of lubrication will accelerate chain stretch and wear.
Q: All of a sudden my saw seems to vibrate when I am cutting. What's the problem?
A: Common causes of vibration while cutting include broken cutters, excessive chain stretch, or a worn drive-sprocket on the clutch. Visually inspect the chain and clutch, and repair or replace as needed.
Q: After cutting for a while I see smoke coming from the bar or chain. Is this normal?
A: Check to be sure your bar and chain are properly lubricated and that you have plenty of oil in the tank. Depending on the type and thickness of the material you are cutting, heat will develop at different time intervals. Cutters Edge bar & chain oil will reach its flash point at about 475 degrees Fahrenheit. Under normal ventilation cutting conditions, it is not unusual to reach temperatures over 600 degrees Fahrenheit. If you have plenty of bar & chain oil and the lubrication holes in your guide bar are not clogged, the smoke you see is normal and will go away after your bar and chain cool down.

Other common causes of smoking are cutting with a dull chain or a tight spot on the rails which may have occurred by pinching the bar rails in the cut.

Q: How do I know when it's time to repair my chain?
A: It's time to repair your chain when the chain no longer cuts well. If the speed of the cut has diminished, or it takes more effort to make your cut, your chain probably needs to be repaired and/or sharpened.

If there are more than three broken or seriously damaged cutters in a row on either side of the chain, or six or more on the total chain, it should be repaired.

Some chipping is not unusual and doesn't necessarily mean the cutter needs to be replaced. If you have questions, don't hesitate to call our service department at 1-800-433-3716.

Q: Where can I get my BULLET® Chain repaired?
A: You can only get your BULLET Chain repaired at the Cutters Edge factory or at a Cutters Edge dealer.

Cutters Edge Saws and BULLET Chain are only sold through Fire Equipment dealers. We do not sell through chainsaw or lawn mower shops. The BULLET Chain requires a specially designed diamond sharpening wheel and a cooling and lubrication system to be sharpened properly. This equipment is only available through Cutters Edge. Most chainsaw or lawn mower shops are not capable of sharpening the BULLET Chain.

Q: What materials can the BULLET® Chain cut?
A: There are limitations, but your Cutters Edge Fire Rescue Saw with BULLET Chain will cut a wide variety of materials under the most severe fire ground and rescue scene conditions.

While chain wear and damage may be accelerated when cutting materials other than wood, your BULLET Chain-equipped saw is capable of cutting most building materials, including roofing nails, joist hangers, nailing plates, flashing, light gauge sheet metal, and some lightweight concretes. It is also capable of cutting automotive sheet metal, automotive glass, hurricane glass, bulletproof glass, plastics, fiberglass, and many other composite materials. It can also cut aircraft skin, cockpit and aircraft windows, and some aircraft structural materials.

When materials other than wood are cut, increased wear and damage should be anticipated. The possibility of chain breakage also increases. All materials listed have been successfully cut under controlled conditions or during actual fireground and rescue incidents. However, the quantity and composition of specific materials, operator experience, existing conditions, and unknown factors can adversely affect the outcome.

Q: I just bought one of your Cutters Edge MULTI-CUT saws and was surprised that you recommend a 2-stroke mix of 100:1. I've never heard of a mix that lean. Are you sure that's right?
A: Yes, the correct fuel mix ratio for all Cutters Edge engines is 100:1, using the Cutters Edge Synthetic 2-Cycle oil that comes with the saw.

Our Cutters Edge Synthetic 2-cycle oil is a high-quality synthetic formulated for the conditions found in most fire rescue operations. We developed this synthetic oil over 10 years ago and have never had an oil-related engine failure reported to us.

Obviously, we feel our oil is the best and that's why we recommend it. But any branded chainsaw 2-cycle oil, when used at the proper ratio, will work in our saws. If you use Cutters Edge Synthetic 2-cycle oil, mix with your fuel at 100:1 ratio. If you use any other brand of synthetic 2-cycle oil, mix with your fuel at the ratio the oil manufacturer recommends. If you use a petroleum based 2-cycle oil it must be mixed at a 50:1 ratio.

The oil/fuel mix ratio is critical to the life and performance of your saw. If you have any questions, call us at 1-800-433-3716.

Q: Can I use the Cutters Edge Synthetic 2-cycle oil in our other 2-stroke equipment?
A: Absolutely. In fact, we will warranty any 2-cycle engine that Cutters Edge Synthetic 2-cycle oil is used in against any oil-related engine failure.

Here is our warranty:


Edge Industries, Inc. warrants that the use of its lubricants will not cause mechanical damage to any mechanically sound equipment when used in full compliance with the company's recommendations and instructions.

Q: Will the BULLET® Chain kick back?
A: Essentially, it won't. First, let's explain the two types of kickback:
  1. ROTATIONAL KICKBACK: The violent reaction that occurs when the chain at the upper section of the nose is suddenly stopped, driving the bar nose in an upward arc, toward the operator.
  2. LINEAR KICKBACK: A push reaction, which can occur when the saw is buried in the cut and the cut closes, pinching the chain along the top rails of the bar, pushing the saw into the operator.
The BULLET Chain cannot prevent linear kickback since it is caused by the material being cut and not the chain. But the BULLET Chain virtually eliminates rotational kickback.

The Cutters Edge MULTI-CUT Fire Rescue Saw, equipped with the BULLET Chain, was tested for kickback by SMP, The Swedish Testing Institute. Because of the unique cutting action of the BULLET Chain, the test results on the Cutters Edge Fire Rescue Saw showed it to have extremely low kickback. In fact, it had the lowest kickback potential of any chainsaw style saw.