Quik Spray Troubleshooting Guide

You’ll need your invoice number or quote reference (e.g. CO12345). With that, our support team can confirm your dispatch date, current shipment status, and tracking details where available.

If you don’t have your invoice number, we can locate your order using your company name or delivery address. Call us on 1800 645 688 or email info@quikcorp.com.au.

To get started you’ll need:

• Shipping address
• Email address
• Contact phone number

From there, you can receive a pro forma invoice or pay over the phone.

Email your order details directly to info@quikcorp.com.au and our team will manually process it for you. You can also call 1800 645 688 and select the spare parts option.

1. Visit the parts shop and search by your machine model to filter compatible parts.
2. If you don’t know your model, check the silver identification plate on the machine frame.
3. Otherwise, if you still can’t find what you need, call our spare parts team with your unit details — brand, model, and photos if possible.

Our team can confirm compatibility before you order.

In most cases, a full repair kit is the better option. Kits include all required internal components, ensure compatibility, and eliminate the risk of missing parts.

For example, the Karin controller repair kit includes the diaphragm plus all internal components, and is designed to fit all variants.

Before returning any radio, complete the repair request form and include it with the unit: quikspray.com.au/radio-warranty-and-repairs

When packing your radio, include:

• Your name and company
• A detailed description of the fault — “Radio board – needs repair” is not enough detail. Describe the specific symptoms.

Send to: Quik Corp / Radio Repair, 15 Research Street, Coolum Beach QLD 4573

In short, including the completed form ensures the repair team can process your unit immediately upon arrival.

Radio and remote repairs are handled by specialist technicians. When you call in, our support team will transfer you directly to the technician managing your repair for an accurate update.

Call 1800 645 688.

27MHz systems are no longer manufactured. However, your options are:

• Continue using your existing system until it fails
• Upgrade to the current 915MHz system

Upgrade kit prices are available in our online parts shop.

Yes — in fact, current 915MHz systems offer comparable range to older units, improved long-term reliability, and full parts and service support.

Quik Spray antennas are matched to the specific frequency of your unit. For optimum range and performance, always purchase from our antenna range.

Quik Spray’s high-power 915MHz remote transmitters are rated to operate over a range of up to 300 metres. In ideal, open conditions a range of 150 metres or more can be reliably achieved.

However, range varies with terrain, obstructions and interference — see the Radio & Reel Troubleshooting section below for common causes of reduced range.

If two 915MHz systems are used near each other, matching dip-switch codes on the transmitter and receiver can cause interference or cancel out the signal. Make sure each unit’s transmitter and receiver dip-switch codes match each other, and that nearby units use different codes.

Before anything else, check:

1. Battery voltage — should read approximately 12.5–12.8V
2. Inline fuse on the thin red wire near the positive battery terminal — look for corrosion, melting, or damage and replace if needed

In fact, a blown or corroded fuse is one of the most common causes of total system failure.

1. Confirm the machine battery is fully charged.
2. Check the inline fuse on the red wire from the positive battery terminal.
3. If the fuse is intact, remove the on/off toggle switch behind the weather shroud. Disconnect the two wires and briefly short them together. If the system powers up, the toggle switch is faulty and needs replacing.

1. Replace the remote battery first.
2. Check the radio board — if indicator lights are on, verify the dip switch settings match the remote exactly.
3. If coding is correct, you likely have a stuck relay (common after high humidity or long storage). While holding the remote button, gently tap the black relay with the handle of a screwdriver.
4. If the reel still doesn’t activate, the radio unit needs to be returned for diagnosis and repair.

This is almost always a stuck relay — particularly common after humidity or extended inactivity.

• Press the remote button and gently tap the black relay with a screwdriver handle.
• This may free it temporarily, but the relay should be replaced to prevent recurrence.
• Relays are soldered to the board and are replaceable with standard parts from Repco or Supercheap Auto.

Likely causes include moisture buildup inside the unit, corrosion on fuses or relays, or electrical components degrading during long-term storage.

Prevention tip: Keep units sealed and dry. Then, check fuses, relays, and connections before restarting after any extended storage period.

Work through these checks in order:

1. Discharged transmitter battery — replace (216-9V). Replace every 3 months as routine maintenance
2. Aerial broken or loose on base — replace or tighten. Finger tight only — over-tightening will break the coax cable inside the aerial base, which can reduce range to as little as 20-40 metres
3. Coax broken inside aerial base — replace the aerial base and coax cable
4. Low 12V on machine — charge or replace battery (12.5V allows optimum performance)
5. Faulty receiver or transmitter — call us for a radio return authorisation form: 1800 645 688
6. Interference from overhead power lines — relocate the spraying system

Note for 9TBE & 9TDE Twin Reel units: These transmitters use two different built-in frequencies — 27.145 MHz (left reel) and 27.195 MHz (right reel). You cannot re-code the dip switch on one side to operate the other. Call the factory on 1800 645 688 if you’re experiencing issues.

• Engine revs too low — increase to ¾ throttle or approximately 2400 RPM
• Drive belts slipping — adjust using the belt tensioner

Reel brake adjusted too tight — adjust the brake.

Stop using the pump immediately.

White or milky oil means water has entered the oil system due to one or more perforated diaphragms. As a result, further use will cause seizure and require full pump replacement.

The pump must be fully rebuilt with new diaphragms, O-rings, and seals. Contact us on 1800 645 688.

Stop using the unit immediately.

Water in the oil glass indicates ruptured pump diaphragms. Consequently, running the pump further will seize it.

Call 1800 645 688.

In most cases, a damaged diaphragm in the pressure controller is the cause.

To inspect: remove the four bolts securing the pressure controller and check the diaphragm for tears, perforations, or swelling/stretching. Any of these faults will require diaphragm replacement.

If the diaphragm looks fine but there’s still only a trickle returning to the tank, the likely cause is a blocked strainer, air being drawn into the pump, or an internal pump fault such as failed valves. If the strainer and suction side are clear, the pump needs inspection and valve replacement.

1. Regulating valve not set for pressure — set lever (8) to “press” and adjust knob (6)
2. Damaged or worn seat/spring in regulator — replace with Sting repair kit or new spring
3. Sticking pressure regulator slide — remove slide and lubricate with marine grease
4. Spray nozzles worn, missing, or exceeding pump capacity — replace with appropriate size

1. One or more valves not seating — clean or replace valves
2. Air being drawn through suction line or filter — examine and repair
3. Air not fully evacuated from pump — run pump with lever (8) on by-pass until all air clears
4. Blocked suction filter or closed valve — clean filter or open ball valve
5. Drive belts loose, broken, or direct coupling damaged — tension or replace belts; replace coupling sprockets and chain
6. Ruptured spray hoses or fittings — repair or replace

1. One or more valves not seating — clean or replace valves
2. Diaphragm split (oil will go milky) — STOP PUMP IMMEDIATELY and replace diaphragm (refer to pump manual)
3. Air not fully evacuated — run pump on by-pass until clear
4. Sucking air through suction line or filter — examine and repair
5. Oil level low — top up with 20W/30

1. Damaged or worn seat/spring in regulator — replace
2. Sticking regulator slide — remove and lubricate with marine grease
3. Spray nozzles worn, missing, or exceeding pump capacity — replace with appropriate size
4. Main drive belts slipping — tension or replace; check coupling sprockets and chain
5. Leaking hoses or fittings — repair or replace

1. Oil level low — top up with 20W/30
2. Air in pump or being drawn through suction line — examine and repair
3. Blocked filter — clean filter

Worn safety valve, or pressure set too high — replace the safety valve.

Not unless you have a purpose-built diesel machine. Additionally, always check that your chemicals are compatible with the diaphragms in your pump and pressure controller. If they’re not, you’ll need to upgrade to Desmopan or Viton diaphragms.

SAE 30. Available from any auto parts store.