I run the DF 140 since 5 years on my Brig Eagle 600 without any problems. I bought the complete package with about 200 operating hours. Meanwhile it's about 450.
- very quiet and smooth run (for example in comparison to a DF 115)
- only 186 kg
- Fuel consumption is about 0,4/km - 0,5/km
- it is not the strongest one. as I've read, about 128 real horsepowers
Conclusion: if you are not a real speedfreak I can recommend this engine.
Greetings from Germany