D&B 5.1 Twin
Bore 42 MM Stroke 30 MM
Carburetor Diaphragm pump type with accelerator pump by Walbro
Spark Plugs 14 MM BPM7A or 10 MM CM6 by NGK
Fuel Ratio 32 to 1 Recommended Klotz 308
Please Note: We manufacture two versions - one
with the ignition built in as shown here, and one with an
external ignition. Both engines have identical dimensions.