Aprilia Pegaso 655 '95 Service Manual
Specifications and Main Features
- Engine Type: ROTAX 655
- Bore/Stroke: 100 mm / 83 mm
- Displacement Volume: 651.88 cm³
- Power Output: 34 kW at 6750 RPM
- Peak Torque: 56 Nm at 5500 RPM
- Minimum Engine Idle Speed: 1400 RPM
- Limit of maximum RPM: 7500 RPM
- Frequent working RPM: 7000 RPM
- Ratio of compression: 9.1:1
- Inlet camshaft valve duration: 225°(icing at 1mm valve clearance)
- Exhaust camshaft valve duration: 234° (icing at 1mm valve clearance)
- Idle Timing: 10 ° before TDC up to about 2500 RPM.
- Ignition Timing at full Load: 390 before tdc from about 4000 rpm
- Generator capacity: 12 Volts, 280 Wat
- Spark Plug Specification: 1 Spark Plug NGK DR8 EA with 12 mm.
- Electrode Gap: 6-8 mm
- Electric Starter power: 0.9 kW
- Fuel Used: Super gasoline without lead, omni petrol with a minimum RON 95 rating.
- Cooling System: consists of a water pump integrated within the system for cooling purposes.
- Coolants specification: 50 % water and 50 % Antifreeze.
- Oil Type: API SF or SG.
- Oil Viscosity Recommended: 15W - 40.
- Dry Weight: Approximately 49 kg
- Transmission: 5-speed gearbox
- Final Drive: Chain sprocket driving, containing 16 teeth.
- Chain Type: O-ring chain 5/8"x 1/4"
Frequently Asked Questions
Q: What type of engine oil is recommended for the ROTAX 655 engine?
A: Engine oil with API specifications such as SF or SG and viscosity between 15W to 40W is encouraged.
Q: What type of fuel is recommended for the ROTAX 655?
A: Fuels with an octane rating of no less than 95 RON are approved, use clear gasoline.
Q: What would be the approximate dry weight of the ROTAX 655 engine?
A: Dry weight of ROTAX 655 can roughly be considered to be 49 kg.
Q: What is the maximum RPM achievable by a ROTAX 655 engine?
A: The maximum permissible RPM for a ROTAX 655 motor is approximately 7500 RPM.
Q: How does lubrication work with the ROTAX 655?
A: The ROTAX 655 is a dry sump engine, combined with two oil pumps whereby one is a pressure pump which delivers oil, and a suction pump which draws oil back from the oil pan to the tank.
Q: What is the recommended maintenance schedule for the ROTAX 655?
A: The maintenance interval states that the coolant level should be checked after every 1000 km, engine oil and oil filter should be replaced every 6000 km, and inspection of the valve clearance should be done periodically.
Q: How often should the spark plug be changed?
A: A new spark plug should be fitted after the petrol engine reaches a mileage of around 12000km.
User Manual
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