husky893 have you check these things
screen filter in tank
fuel filter if so is arrow turn turned the wright way for fuel flow.
check plug to see if running rich or lean.
pull plug out put back in cap ground threads to head turn over see what kind of spark you have.
check the coil wires for good connection not loose.
how old is the spark plug.
vacuum lines and intake for leaks.
i have had problems in the past this is just some things i look at first.
don't know if this will help any but never hurts to look.
pud _________________ 2006 sunl 150b
Dr. pulley 10 gram sliders, 1500 torque spring,39 tooth sprocket,2000lb winch, red neck uni filter, 125 main jet at 1,450 elevation, drilled out exhaust,ngk iridium plug,performance intake
trying a set of 10gram rollers now