Here is what the repair manual says to check for no start:
5 TROUBLESHOOTING EBS30321 GENERAL INFORMATION TIP The following guide for troubleshooting does not cover all the possible causes of trouble. It should be helpful, however, as a guide to basic troubleshooting. Refer to the relative procedure in this manual for checks, adjustments, and replacement of parts. EBS30322 STARTING FAILURES Engine
1. Cylinder and cylinder head
• Loose spark plug
• Loose cylinder head or cylinder
• Damaged cylinder head gasket
• Damaged cylinder gasket
• Worn or damaged cylinder
• Incorrect valve clearance
• Improperly sealed valve
• Incorrect valve-to-valve-seat contact
• Incorrect valve timing
• Faulty valve spring
• Seized valve
2. Piston and piston ring(s)
• Improperly installed piston ring
• Damaged, worn or fatigued piston ring
• Seized piston ring • Seized or damaged piston 3. Air filter
• Improperly installed air filter
• Clogged air filter element
4. Crankcase and crankshaft
• Improperly assembled crankcase
• Seized crankshaft Fuel system
1. Fuel tank
• Empty fuel tank
• Clogged fuel tank drain hose
• Clogged rollover valve
• Clogged rollover valve hose
• Deteriorated or contaminated fuel
2. Fuel pump
• Faulty fuel pump
• Faulty fuel injection system relay
• Clogged or damaged fuel hose 3. Throttle body
• Deteriorated or contaminated fuel
• Sucked-in air Electrical system 1. Battery
• Discharged battery • Faulty battery 2. Fuse(s)
• Blown, damaged or incorrect fuse
• Improperly installed fuse
3. Spark plug
• Incorrect spark plug gap
• Incorrect spark plug heat range
• Fouled spark plug
• Worn or damaged electrode
• Worn or damaged insulator
• Faulty spark plug cap
4. Ignition coil
• Cracked or broken ignition coil body
• Broken or shorted primary or secondary coils
• Faulty spark plug lead
5. Ignition system
• Faulty ECU • Faulty crankshaft position sensor
• Broken AC magneto rotor woodruff key
6. Switches and wiring
• Faulty main switch
• Faulty engine stop switch
• Broken or shorted wiring
• Faulty gear position switch
• Faulty start switch
• Faulty brake light switch
• Improperly grounded circuit
• Loose connections
7. Starting system
• Faulty starter motor
• Faulty starter relay
• Faulty starter clutch