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Sutton Ag is the U.S. exclusive distributor of Zon bird scare cannons and accessories.

Zon Automatic Scarecrows have been used worldwide to scare pest birds and wildlife away from agricultural crops, airports, disposal sites and other critical areas since 1942.

Zon is the original bird scaring cannon and is incomparable to inferior products on the market - don't accept imitations!

Downloadable Zon Cannon diagrams
Zon EL08 bird scare cannon diagram (PDF icon)
Zon EL08
If your propane cannon is in need of repairs or parts, please inquire with your local Zon dealer as they may provide a handy repair service. If not, you can deliver you cannons to Sutton Ag for repair. We offer an economical cannon repair service with quick turnaround. Please contact us for more information.

We stock a full inventory of repair parts for the Zon Mark 4 and EL08 cannons as well as most parts for the older Zon Mark 2 cannon. Please visit our Zon parts page for more information.

We're happy to provide free Zon gun troubleshooting guidance over the phone, but before calling, please consider some very common and easy to remedy propane cannon problems.

Descriptions, pictures, and tips below are for the Zon Mark 4 cannon but generally also apply to the Zon Mark 2 cannon.

Never perform any maintenance or troubleshooting with the gas tank attached to the propane cannon.

If you're operating the cannon in a windy area, it's possible the wind is too strong and is disturbing the gas mixture (blowing the gas away before it ignites). This is often the case when the cannon appears to be working, but the blasts are dull or just a clicking sound is heard as the tripper strikes the lighter. The solution is to place the cannon out of the wind or behind a wind screen, or discontinue use until wind subsides.

If your weather has been especially humid or foggy (not regular morning dew, but permeating dampness), moisture may have accumulated inside the propane cannon. This can be determined by lifting the lid and looking inside for signs of excess moisture, primarily in the area of the lighter/piezo element. The solution is to dry off any moisture.

When it's time to take your bird scare cannon out of storage for another season's use, be aware of spiderwebs/cobwebs which can clog the gas intake chamber. Usually, this is evident when the cannon was firing regularly before storage, and found to be non-working upon removal. Yes, this seems unlikely, but we've found it is very often the cause of this type of trouble (we have "repaired" many cannons by simply removing cobwebs).

Zon cannonZon Mk 4 main body removal
To access the cobweb clog, you'll need to detach the main body mechanism from the megaphone by gently bending it away from the bolts.
Zon propane cannonGas intake chamber closeupWhitish substance is cobweb clog. Zon propane cannonCobweb removal
Cobwebs can be quite sticky, but removal is easy with a twisted wire brush or similar tool.
Zon cannon
Clear cannon barrel.
Zon cannon
Debris filled cannon barrel.
Material inside of barrel.
Another problem that often arises after the bird scare cannon has been stored during the off-season is material within the barrel.

Be sure to clean out any debris that has accumulated within the cannon barrel; further examine the depths of the barrel by shining a light into it; if you are unable to see clear through to the Lighter #91506, there is likely material clogging this area. Note the Iris #91146 opening is almost 2-inches, which is plenty of room for a rodent or other small critter to set-up residence while the cannon is not in use (we have "repaired" many cannons by removing mouse and wasp nests in the area beyond the Iris).

Storing your cannon in a sealed plastic bag can help lessen the likelihood of rodents or insects nesting within the propane cannon.

Always remember to examine your propane cannon before using after a period of storage.

General gas issues.
The propane tank must be securely connected to the Regulator. If there is pressurized gas supply to the cannon, it will go through its cycle. If the tank is filled with gas, is hooked up properly, and is turned on, action will happen at the cannon (will blast as it should, or will generate mechanical/clicking noises if there's a problem within the cannon).
If nothing happens:
  • Tank is empty or very near empty. If refilling the tank doesn't help, try a different tank.
  • Regulator is not fully tightened or seated. Remove and reattach to tank.
  • Overflow protection device on tank has not been deactivated (so gas cannot reach the cannon).
  • Can you smell gas? It may be leaking through the Hose #6556 or Diaphragm #91316. Both parts are inexpensive to replace.
  • Has aftermarket hose been installed recently? The type of hose required for the Zon cannon is very specific and you're not likely to find an acceptable aftermarket substitute, even when purchased from a propane retailer. Zon Hose #6556 is quite inexpensive (less than $3 per foot) and readily available from Sutton Ag or your local Zon gun dealer.
  • Have any parts been manipulated? The propane cannon is very user serviceable, but the parts are not meant to be altered in any way (ie: enlarging holes to manipulate gas flow, etc.). To do so can be dangerous, will void the warranty, and can cause more costly repairs.
General Zon Mark 4 Propane Cannon Troubleshooting



The Zon Mark 4 Bird Scare Cannon, fully connected, fails to operate at all.

Gas tank valve is not open.
Open valve.
Interval regulator is not open.
Open regulator by turning knob towards the "+" (plus) mark; if blasts are too frequent, turn knob towards the "–" (minus) mark.
Gas tank is empty or has too little pressure.
Connect new gas tank.
Gas valve #91406 cannot be opened. This may happen if the device has not been operated for some time.
Using 2 fingers to grasp the hinged clip #91266, pull it up vertically once or twice. Be sure to keep the hinged clip from slipping over the stop lip of the spring holder #91236 as this will prevent you from opening the gas valve.
Coupling nut gas regulator is not tight enough.
Tighten coupling nut with suitable spanner.
Hose connecting gegulator unit to cannon has been damaged.
Replace the hose. A quick method to trace a leak in the gas regulator is to check it with a leakage spray.
Diaphragm leaks along the plate rim.
Repair should be carried out by the dealer.
The Zon Mark 4 Bird Scare Cannon operates, but there is no explosion or sound.
Ignition gives a weak spark or no spark at all.
Examine Electrode #91536 / 91536S. It is possible that the porcelain or the mass point is broken; if so, replace.

Replace Piezo-Element #91526.

Piezo-Element/Electrode are wet. Dry both well.

Wind is too strong (greater than 15 mph); gas/air mixture is disturbed.
Place the cannon out of the wind, or behind a wind-screen.
Gas mixture is not good.
Gas mixture in tank is not good, replace gas tank.
The Zon Mark 4 Bird Scare Cannon works, but Diaphragm Gland #91226 remains in the top position.
Gas Valve Holder #91416 is blocked or partially blocked.
Clean opening with small piece of wire no more than .6 mm thick.
Gas Valve #91406 cannot be opened. This may happen if the device has not been operated for some time.
Using 2 fingers to grasp the hinged clip #91266, pull it up vertically once or twice. Be sure to keep the hinged clip from slipping over the stop lip of the spring holder #91236 as this will prevent you from opening the gas valve.
Gas Valve #91406 stays open: Diaphragm Gland #91226 remains above.
Diaphragm Springs #91286A are broken. If so, replace.
Gas Valve #91406 cannot be opened or sufficiently opened.
Lifting level must be 1 - 2 mm. Repair should be carried out by the dealer.
The Zon Mark 4 Bird Scare Cannon operates, but gives dull explosions.
Wind is too strong; gas/air mixture is disturbed.
Place the cannon down wind, out of the wind or behind a wind screen.
Telescopic megaphone not extended, or only partially extended.
Pull out to full extension.

If you'd like to order via phone or need help troubleshooting your propane cannon issues, please call us toll-free at 866/280-6229

Along with an industry standard warranty, Zon cannons and accessories manufactured by Dazon are backed by over 7 decades of manufacturing experience and expertise. Since 1942, Dazon has been the foremost leader in the manufacture and design of bird scaring cannons, and continues to innovate to this day. Zon cannons remain the most effective, reliable, popular and affordable bird scaring cannons in the world.

Sutton Agricultural Enterprises, Inc.
1044 Harkins Road

Salinas, CA 93901 USA
Phone: 866/280-6229 or 831/422-9693
Fax: 831/422-4201

Your source for pest bird control products and precision farm equipment since 1956.
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