I bought a Poulan Pro combo pack that had the string trimmer and pole saw together. Mine starts and runs fine. The string trimmer works great. I do not recall my model # and it is outside right now. I can find it tomorrow if I remember.
However, I have some negative comments about the pole saw.
First, the chain bar can tilt on its bolt. There is only one bolt and I constantly have to tighten it. When it tilts, it pries on the plastic shroud. Sooner or later it is going to break.
Second, if I leave it sit on the floor the bar/chain oil tends to drain out of the tank and make a puddle on the floor. I have not found a good storage angle for it.
Third, it is a heavy @##$%@ piece of equipment to hold over your head for any amount of time. You will get sore.
Fourth, it bogs the engine down easily. I do not think it has quite enough power to cut 8" limbs. It is fine for pruning.
The positives of the unit are it changes between the string trimmer and pole saw very, very easily. Just loosen a knob, bush in a thumb button, remove the attachment, slide another one it until the thumb button clicks, tighten the knob and off you go. It has a nice support on the housing so you can set it down to fuel it and it won't tip over on its side. To start it, you just flip the choke lever to start and pull the cord. It fires up and the choke stays engaged. You let it warm up and as you hit the trigger, the choke comes off. Nice feature compared to my older manual choke equipment. The unit has a very nice reach. I am 6' tall and can trim stuff up around 11' without lifting too far. A bit higher if I reach above my chest.
Overall, I give it about 7.5 out of 10. It needs a bit more power for the saw and a sturdier mount for the chain bar.