Experiencing starting problems with your Husqvarna FE 350 can be a major inconvenience, especially when you're eager to hit the trails or trailside. However, many of these issues are often straightforward to diagnose and fix if you take a methodical approach. By understanding the key systems involved in starting your bike and how to inspect them properly, you can save time and avoid unnecessary trips to the mechanic. This comprehensive guide will walk you through diagnosing and resolving common starting problems on your Husqvarna FE 350, ensuring your motorcycle fires up smoothly and reliably every time.

Step 1: Check the Battery and Electrical Connections

The battery is the heart of your motorcycle’s electrical system and the most frequent source of starting problems. A weak, discharged, or damaged battery often results in insufficient power to crank the engine or operate the starter motor effectively.

Testing Battery Voltage

Begin by measuring the battery’s voltage using a digital multimeter. A fully charged 12V lead-acid battery should show about 12.6 to 12.8 volts at rest. If the reading falls below 12.4 volts, the battery is partially discharged. Below 12 volts indicates a significantly weak battery that may not start the bike reliably.

If you have access to a battery load tester, use it to simulate starting conditions and check if the battery maintains voltage under load. This can reveal internal battery faults not apparent during a simple voltage test.

Inspecting Battery Terminals and Connections

Corroded or loose battery terminals can restrict electrical flow, causing starting issues even if the battery is healthy. Remove the battery terminals and clean them thoroughly using a wire brush or battery terminal cleaner. Check the cables for signs of wear, corrosion, or damage, and ensure the connections are tight and secure when reinstalled.

Ground Wire Inspection

The battery’s negative terminal connects to the motorcycle frame as a ground. A poor ground connection can cause intermittent starting problems or no response from the starter. Verify that the ground wire is firmly attached and free from rust or paint that could insulate the connection.

Step 2: Inspect the Starter System

If the battery is confirmed healthy but the engine still won’t crank, the issue may lie within the starter motor or its relay (also known as a solenoid).

Listening for Starter Relay Clicks

When you press the start button, listen closely for a clicking sound. A single click usually indicates the starter relay is attempting to engage, while rapid clicking often points to insufficient battery power or loose connections. No clicking at all could mean a faulty relay or a problem with the start button or wiring.

Checking the Starter Relay and Wiring

Locate the starter relay, usually near the battery or under the seat. Inspect the wiring harness for any signs of damage, corrosion, or loose connectors. Using a multimeter, test the relay coil resistance and the continuity of the relay contacts as per the specifications in the Husqvarna FE 350 service manual.

Testing the Starter Motor

If the relay and wiring are intact, the starter motor itself may be at fault. Remove the starter motor and bench test it by connecting it directly to a fully charged 12V battery. If the motor spins freely and strongly, it’s likely good. If it hesitates, grinds, or doesn’t spin, it may need servicing or replacement.

Step 3: Verify Fuel Delivery

Even if the engine cranks normally, it won’t start without an adequate fuel supply. Problems in the fuel system can prevent the engine from firing or cause it to stall immediately after starting.

Check the Fuel Valve and Fuel Lines

Ensure the fuel petcock (fuel valve) is in the “ON” or “RESERVE” position to allow fuel flow to the carburetor or fuel injection system. Inspect fuel lines for cracks, blockages, or leaks that could interrupt fuel delivery.

Inspect Fuel Quality

Stale or contaminated fuel can cause hard starting or poor combustion. Drain and replace old fuel if the motorcycle has been sitting unused for an extended period. Using fresh, high-quality gasoline with the appropriate octane rating recommended by Husqvarna will optimize performance.

Clean or Service the Carburetor or Fuel Injection Components

For carbureted models, dirt or varnish buildup inside the carburetor jets and passages can impede fuel flow. Remove the carburetor and clean all jets and float bowls thoroughly using carburetor cleaner. For fuel-injected models, check the fuel pump operation and fuel injectors for clogging or electrical faults.

Step 4: Inspect the Ignition System

The ignition system is responsible for producing the spark that ignites the fuel-air mixture in the combustion chamber. Issues here often result in the engine cranking but failing to start.

Examine the Spark Plug

  • Remove the spark plug and inspect its condition. A fouled spark plug, indicated by black carbon deposits, oil fouling, or a wet appearance, can prevent proper sparking.
  • Check the spark plug gap using a feeler gauge and adjust it to the manufacturer’s specification (usually around 0.6-0.7 mm for the FE 350).
  • Replace the spark plug if it appears worn, damaged, or excessively fouled.

Test for Spark

With the spark plug removed but connected to the ignition coil, ground the plug’s threaded body to the engine and crank the engine. Look for a strong, blue spark jumping across the electrode gap. A weak, inconsistent, or absent spark indicates ignition system issues.

Check Ignition Coil and CDI Unit

The ignition coil amplifies the low voltage from the CDI (Capacitor Discharge Ignition) unit to generate the high voltage spark. Using a multimeter, measure the coil's primary and secondary resistance values and compare them to Husqvarna’s specifications. Similarly, the CDI unit can sometimes fail internally, causing no spark situations. Diagnosing a faulty CDI usually requires replacement or professional testing due to its complexity.

Step 5: Additional Mechanical Checks

Sometimes, starting problems may stem from mechanical issues within the engine or related components.

Check the Engine Compression

Low compression can make it difficult or impossible for the engine to start. Use a compression gauge to measure cylinder pressure while cranking. The FE 350 should have compression readings in the range specified by the manufacturer (typically around 140-160 psi). Low compression may indicate worn piston rings, damaged valves, or a blown head gasket.

Inspect the Kill Switch and Clutch Safety Switch

Ensure the kill switch is in the “RUN” position, as a switched-off kill switch will prevent the engine from starting. Similarly, verify that the clutch safety switch and side stand switch are functioning correctly, as these safety features cut ignition or starter power if engaged improperly.

Preventive Maintenance Tips to Avoid Starting Problems

Regular maintenance can dramatically reduce the likelihood of starting issues on your Husqvarna FE 350:

  • Battery Care: Keep the battery charged, especially during off-season storage. Use a smart charger or maintainer to prevent sulfation.
  • Fuel System Maintenance: Use fresh fuel and add fuel stabilizer if storing the bike for extended periods. Clean the carburetor or fuel injectors as part of routine servicing.
  • Spark Plug Replacement: Replace spark plugs according to the manufacturer’s recommended intervals or if fouled.
  • Electrical System Checks: Regularly inspect wiring, connectors, and switches for wear and corrosion.
  • Mechanical Service: Perform periodic valve clearance adjustments and compression tests to maintain engine health.

When to Seek Professional Help

If you have systematically checked all the above components and still cannot resolve the starting problem, it may be time to consult a professional mechanic. Complex issues such as internal engine damage, electronic control unit (ECU) faults, or intricate wiring problems often require specialized diagnostic tools and expertise.

Remember, safety is paramount when working on your motorcycle. Always disconnect the battery before performing electrical work, work in a well-ventilated area when dealing with fuel components, and wear appropriate protective gear.

Conclusion

Starting problems on your Husqvarna FE 350 can stem from a variety of sources, including battery issues, starter system faults, fuel delivery problems, and ignition system failures. By following a systematic troubleshooting process—from checking the battery and electrical connections, through inspecting the starter and fuel systems, to verifying ignition components—you can pinpoint and resolve most common issues yourself.

Routine maintenance and timely servicing are your best defenses against unexpected starting troubles. Armed with the right tools, knowledge, and patience, you’ll keep your Husqvarna FE 350 ready for every ride and adventure.