As the marine industry complies with Tier 4 federal emission standards, it has found itself without a compliant engine to power the smallest generators, according to Tino Mastry, who spoke to us just before retiring as president of the Mastry Engine Center.
The St. Petersburg, Florida, company is a Yanmar subsidiary and distributor for much of the Southeast, including Florida and the Caribbean. Mastry also assembles its own line of MasPower marine gensets.
Mastry says no diesel engine manufacturer currently has a compliant engine under 100 hp for the genset applications, which are regulated differently from propulsion engines.
“We’re going to end up with some qualifying Tier 4 engines at some point," Mastry says. "The question is when?”
Until then, the makers of small generators will be selling inventory stockpiled before the December 30 cutoff date for compliance. However, Mastry speculates some may run out before compliant replacements are available.