HPI Racing 101310 Nitro Slide Carb w /Pull Start G3.0 Stadium Truck Engine This is the Nitro Star G3.0 Engine with Pullstarter supplied with the HPI Bullet ST 3.0 Monster Truck and Bullet ST 3.0 Stadium Truck. FEATURES ABC liner construction, "A"luminum piston with "B"rass cylinder liner that is "C"hrome plated Two needle composite body slide valve carburetor SG type (integrated pilot shaft) crankshaft Two year limited warranty through HPI beginning at date of purchase INCLUDES Nitro Star G3.0 Engine with Pullstarter, Air Filter Assembly, Glow Plug, and Instructions REQUIREMENTS Glow Fuel: Car blend nitromethane with 20-25% nitro content Glow starter, air filter oil and track equipment SPECIFICATIONS Displacement: .18 cu in (3.0 cc) Output not provided by manufacturer Distance between Mounting Holes Same Side: 0.47" (12mm) Distance between Mounting Holes Opposite Side: 1.2" (31.5mm) Height from Mounting Tab/top of Cylinder Head: 3" (76mm) Height from Bottom of Crankcase/top of Cylinder Head: 3.5" (89mm) Width of Mounting Tabs: 1.6" (40mm) Length from Pull Starter to Front Bearing: 3" (75.5mm) Length from Back Plate to Front Bearing: 2.2" (55.5mm) Length from Pull Starter to end of Crankshaft: 4.2" (107mm) Length from Back Plate to end of Crankshaft: 3.5" (88mm) Carburetor Settings; High Speed Needle: 1/4-3/4 turn clockwise from flush (never turn past a maximum of 3/4 turn clockwise from flush) Idle Adjustment Screw: Turn counterclockwise to reduce idle speed or clockwise to increase, idle speed should not engage clutch, set throttle trim on radio to neutral before setting idle. Low Speed Needle: Set flush with carb body, let engine idle for 30 seconds, then accelerate to 3/4 throttle. If there is a lot of white smoke and slow acceleration the mixture is too rich. If car accelerates quickly and sputters, the mixture is too lean. Turn needle in 1/8 turn increments to adjust. Do not turn past 2 turns from flush.