I had the same problem with a 6.3 KW NLE Green Emerald series (two cylinder air cooled direct drive four pole (1800 rpm) LP fueled) unit. After much trouble shooting from a service manual (available on the web) traced it to a failing voltage regulator (sounded just like fuel starvation). Another source for good troubleshooting information and discounted aftermarket parts is Advanced
Service and Parts, LLC; dba
Index of / Be careful around the stator output when the unit is running, there is enough voltage and more than enough current to more than ruin your day. Take care and “Happy Motoring!”
v/r,
W Taylor Hudson, Jr.
Black Creek, Florida (Jacksonville)
Clemson University class of ‘80
1998 Safari Serengeti (40’ DP)
(1997) Caterpillar 3126, 7.2L, 300 HP, 800 ft-lbs @ 1440RPM,
first generation HEUI direct injection
Allison 3060 six speed “World” transmission
Magnum chassis (Goodrich Velvet Ride rubber block torsion suspension)