Is anyone bored enough to help me?

I have a macallister brush cutter. The drive belt has broken. All it says on it is ehpna 185476,1307 2021and 0094 332. 

None of these lead me to a replacement part.

I don't know the model of brush cutter. I've had it 10 years .

As my ride on is fecked....I need to use this to cut back a field.

Any help would be gratefully received.