How to recreate the synth lead inJump by Van Halen

The key parts of this synth sound are the:

1. Big, fat, detuned saw wave. This can be accomplished with 2 saw oscillators with one detuned or with a unison. You could do both too.
2. Some filter envelope. It should be pretty fast. Just enough to hear the filter cutoff snap open.
3. Spacious reverb and optionally some delay.
4. If your synth has it, a vintage or slop knob. Jump is an older song and older synths' tuning naturally drifted. This will help it sounder closer to the original.
5. Add chorus to make it sound thicker, if needed.

Another note: this song covers a broad range of notes. If your synth doesn't have that many keys, you may want to add a sub synth on the bottom end to get the lower growly synth sound.