Hot

Definition: Engine cranks OK but will not start, engine is hot.
POSSIBLE CAUSE ACTION
No fuel in tank Put fuel in tank

Fuel filter/lines plugged Replace filter, refer to COMPONENT REPLACEMENT AND REPAIR PROCEDURES, clear clogged lines, check for contaminated fuel tank, refer to MAINTENANCE PROCEDURES

Low/no fuel pump output Refer to FUEL PUMP TEST, and check fuel pump pressure, capacity, and vacuum

Float level low/high Adjust float level, replace defective float, replace defective needle/seat, refer to CARBURETOR DISASSEMBLY and ASSEMBLY, and ADJUSTMENT PROCEDURES

Choke binding/stuck Lubricate choke shaft, adjust choke, replace defective choke components, refer to MAINTENANCE PROCEDURES, and COMPONENT REPLACEMENT AND REPAIR PROCEDURES

Vapor locking Check fuel line routing, ensure not near hot exhaust, check fuel vapor return line for restriction, check fuel pump for output and volume