is the air filter clean? is the generator cover panel installed? what is the ambient air temperature when it quits? you need more than 1/4 tank of fuel. when it quits, will it restart immediately if you run the fuel priming pump? have you replaced the fuel filters?
check the onan website for troubleshooting info.
01 WINNEBAGO 35U W20.8.1L SW Wa, Hi. Good Sam, SKP. AMSOIL fluids. BANKS ecm program. SCAN GAUGE II w/ Ally temp. 2 LIFELINE GPL-6CT AGM Batts on their sides. TST tptts. K&N panel air filter. AERO mufflers. TAYLOR plug wires. ULTRA POWER track bar. KONI fsd shocks, toad '14 smart car