blower fa does not stay running

[don v]

I have a Mr hearter maxx 80000 btu the combustion fan and burners run fine but the blower fan does not. the blower fan will come on when power has been off for a little while but after cycling it will not come back on. if i hang a house fan behind it stays running. I changed the capacitor still doing it. can some one help?

 

[fitter30]

I have a Mr hearter maxx 80000 btu the combustion fan and burners run fine but the blower fan does not. the blower fan will come on when power has been off for a little while but after cycling it will not come back on. if i hang a house fan behind it stays running. I changed the capacitor still doing it. can some one help?

Have you touched the motor be careful might be hot. Off of a motor hi temp limit switch. Unit have a termial strip for thermostat? Jump termials R to G fan should run.