This is the JL .28 Maxx Engine with Pullstarter from Ofna.
Slide valve carburetor
Ten fin heatsink head, black in color
JL .28 Maxx Engine with Pullstarter and Instructions
Fuel: Car blend, 20% recommended for break-in Glow Plug: Hot or medium range
Air filter depending on vehicle
Glow starter and track equipment
Displacement: .28 cu in (4.6cc) Stroke: 0.66" (16.8mm) Bore: 0.75" (19mm) RPM: 38,000 Horsepower: 2.7 Weight: 11.6oz (330g) Height Crankcase Bottom/to Top of Cylinder Head: 4.5" (115mm) Cylinder Head Diameter: 2.4" (60mm) Length/Mounting Hole Centers Same Side: 0.87" (22mm) Length/Mounting Hole Centers Opposite Side: 1.5" (38.3mm) Length/Pull Starter to end of Crankshaft: 4" (102mm)
Main Needle Valve, 3-3-1/2 turns from closed, adjust for maximum
RPM and power without making engine too lean or too hot Low Speed Needle: 4-3/4 turns from closed, do not adjust until main
needle valve is set for power and top speed Barrel Stop Screw: Adjusts idle, set for 1/16" gap to start new
engines, open more for faster or higher idle
– If you need more information, use these Ofna resources –
This is the JL .28 Maxx Engine with Pullstarter from Ofna. FEATURES: Slide valve carburetor, ten fin heatsink head, round rear exhaust REQUIRES: 20% car blend fuel, glow starter, air filter, filter oil, fuel bottle
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