Sylvie Willis
The Scag Tiger Cat II is a powerful lawnmower with a 61-inch deck and a 23 HP Kawasaki engine. While it is a reliable machine, it is not uncommon for users to encounter issues with the fuel system. One such issue is when the mower runs out of fuel in one of the two tanks and, despite switching to the other tank, the mower still fails to restart. This problem could be caused by a variety of factors, including a clogged fuel filter, a stuck safety switch, or debris in the fuel line. In this discussion, we will explore the possible causes of this issue and provide practical solutions for troubleshooting and resolving it.
| Characteristics | Values |
|---|---|
| Fuel valve position | Off - Res/left and in the middle position is the main tank |
| Fuel bowl | Remove to check for trash |
| Fuel filter | Check for blockage |
| Fuel line | Remove at the fuel filter and blow back into the tank to clear debris |
| Charcoal filters | Present to catch gas fumes from the fuel tank |
| Fuel pump | Test line attached to the inlet |
| Cylinder test | Run to rule out issues |
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What You'll Learn
- The fuel valve has three positions: Off, Res/Left, and Main Tank
- Check for fuel in the filter and blow back into the tank to clear debris
- If the mower won't turn over, check spark plugs, PTO switch, battery, and connections
- If the engine cranks but won't start, it may be flooded or have a stuck safety switch
- Bypass the fuel pump and run a test line from the tank directly to the engine
The fuel valve has three positions: Off, Res/Left, and Main Tank
The Scag Tiger Cat 2 is a powerful lawnmower with a fuel valve that offers three distinct positions: Off, Res/Left, and Main Tank. This valve is located on the right-hand tank, which is also known as the main tank. Understanding how to properly utilise this fuel valve is crucial for effective mower operation and maintenance.
When the fuel valve is in the "Off" position, no fuel can flow from either of the two tanks, effectively shutting off the fuel supply to the engine. This position is essential for safety, such as when the mower is not in use or when performing maintenance.
The "Res/Left" position on the fuel valve indicates that the mower is drawing fuel from the left-hand tank, also known as the reserve tank. This setting is useful when the main tank is low or when you need to switch tanks temporarily.
The "Main Tank" position, found in the middle of the fuel valve, indicates that the mower is drawing fuel from the right-hand tank, which is the primary fuel source. This tank typically holds more fuel and is intended for regular use. However, some users have reported issues with the mower shutting off when switching to this position, which may require further troubleshooting.
It is important to note that if you experience issues with the mower shutting off after switching to the main tank, there could be other factors at play. These may include fuel restrictions, clogged filters, or issues with the fuel pump or lines. In such cases, consulting a qualified technician or seeking expert advice is recommended to identify and resolve the specific problem.
By understanding the three positions of the fuel valve on the Scag Tiger Cat 2, operators can effectively manage their fuel supply and maintain the mower's performance. Proper use of the valve can help prevent unexpected shutdowns and ensure a seamless mowing experience.
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Check for fuel in the filter and blow back into the tank to clear debris
To switch fuel tanks on a Scag Tiger Cat 2, you must first check for debris that may have accumulated in the fuel filter. This debris can cause issues with the fuel line, resulting in the mower shutting off unexpectedly.
To do this, remove the fuel line at the fuel filter. With the filler cap off, blow back into the tank to clear any debris. This step is crucial in ensuring the fuel tank is clean and free of blockages. Once you have blown back into the tank, inspect the fuel filter for any remaining debris. If necessary, repeat the process until the filter is completely clear.
After blowing back into the tank, blow into the tank itself to verify that the line is open. This step ensures that fuel can flow freely through the system. Finally, reinstall the fuel line and choke it to encourage fuel pickup and a successful restart.
By following these steps, you can effectively clear debris from the fuel filter and promote a smooth flow of fuel to the engine. This process is an essential aspect of maintaining your Scag Tiger Cat 2 and ensuring its reliable performance.
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If the mower won't turn over, check spark plugs, PTO switch, battery, and connections
If your Scag Tiger Cat 2 mower won't turn over, there are several things you can check and troubleshoot before taking it for professional repairs.
Firstly, check the spark plugs for any issues. A dirty, loose, or disconnected spark plug can cause problems. Clean off any debris, reconnect, and tighten the spark plug. You should also check the underside of your mower for a build-up of clippings and debris, which can cause issues.
Next, check the PTO switch. If the mower deck does not come on when the switch is activated, the switch itself may be faulty and need replacing. You can try adjusting the clutch, and if that doesn't work, check the wiring. If the wiring is fine, the issue may be with the electric clutch, which may need to be replaced.
You should also check the battery and connections. Check the voltage of the battery with a digital multimeter. If the voltage is below 12.6 volts, the battery is likely dead and will need replacing. If the battery is fully charged and you hear a clicking noise, the starter solenoid may be faulty and need replacing. Ensure the terminal connections are clean and securely fastened.
If none of these troubleshooting steps work, there may be another issue with your mower, and it is recommended to seek professional assistance or advice.
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If the engine cranks but won't start, it may be flooded or have a stuck safety switch
If your Scag Tiger Cat II engine cranks but won't start, there are a few potential issues that could be causing this. Firstly, check if the engine is flooded with fuel. This can happen if you've recently refilled the tank after running out of gas. To address this, remove the fuel line at the fuel filter and blow back into the tank with the filler cap off. This will help clear any debris that may have gathered when the engine ran out of fuel. Afterwards, blow into the tank to check if the line is open, then reinstall the fuel line, choke it, and try starting the engine again.
Another potential issue could be related to the oil level. Pull the dipstick and check the oil level. If the oil level is low, the mower will not crank as a safety feature. In this case, ensure that you add enough oil to reach the required level. Additionally, if the oil is old or has thinned out, it may not float the valve in the switch, causing the same issue.
Furthermore, there could be an issue with one of the safety switches, such as the seat switch, parking brake, PTO switch, or stick control switches. To diagnose this, you may need to refer to the wiring diagram for your unit and perform some electrical tests. For example, you can use a test light hooked to the negative battery post to check for power in different components.
If the engine still won't start after trying these solutions, there may be other underlying issues or faulty components that need to be addressed. In such cases, it is recommended to seek professional assistance or refer to specific repair guides for further troubleshooting steps.
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Bypass the fuel pump and run a test line from the tank directly to the engine
If you want to bypass the fuel pump and run a test line directly from the tank to the engine on your Scag Tiger Cat 2, here are the steps you can follow:
First, locate the fuel valve, which is usually on the right-hand tank, also known as the main tank. The fuel valve has three positions: Off, Res/Left, and the middle position, which is the main tank.
Next, you'll need to attach a test line to the inlet of the fuel pump and drop it into one of the tank filler openings, bypassing everything up to the fuel pump. Make sure the crankcase is sealed, as the pressure will power the pump.
If your engine still doesn't start, there could be other issues at play. For example, the fuel filter may be clogged, or there could be debris in the tank or fuel lines. Try removing the fuel line at the fuel filter and blowing back into the tank with the filler cap off to clear any debris. Then, blow into the tank to ensure the line is open. Finally, reinstall the fuel line and choke it to see if the engine will pick up fuel and start.
If these steps don't resolve the issue, it's recommended to consult a qualified technician or mechanic for further assistance.
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Frequently asked questions
Try switching to the other tank and restarting the mower. If this doesn't work, check the fuel bowl for trash, and ensure that there is fuel in the filter. You can also try blowing back into the tank with the filler cap off to clear any debris.
Check the fuel filter, spark plugs, PTO switch, battery, oil, fuses, and connections. If these are all in order, you may need to check for a clogged fuel line or a stuck safety switch.
This could be due to a clogged fuel filter or a restricted fuel line. Try cleaning the carb and replacing the fuel pump if necessary.
