If the generator is used at low loads, engine life will be shortened and serious damage may occur. This is even more important, especially in large powers.
The minimum load allowed in standby generators is 30% of the total stand-by power.

If the generator is operated with no load or low load;
Corrosive damage to engine components,
Reduction of lubrication oil and decrease in lubrication quality,
White smoke,
Oil leak in the exhaust and air intake system, liquid flow,
Problems will be occur carbon build-up on cylinder heads or exhaust manifold