I got the model 5000 (?) today.The cheapo kept the spark plug.I found a plug here that works in the saw & is correct.I got it to fire on a prime,so I fueled the saw up & pulled it over only a few times & ended up with the rope in my hand,all 20 in.of it.I rewound the pulley with fresh new rope & tensioned it.I got it ready to put back on the saw in the a.m.I think the fuel tank has a leak,go figure.