TECHNICAL DATA - ENGINE 77
Ignition Kokusan 2K-1
Ignition point (BTDC) 1.4 mm (0.055 in)
Spark plug NGK BR9 ECMVX
Spark plug electrode gap 0.60 mm (0.0236 in)
Starting aid Kickstarter
13.3250 SX
Design 1-cylinder 2-stroke engine, water-cooled, with reed intake and
exhaust control
Displacement 249 cm³ (15.19 cu in)
Stroke 72 mm (2.83 in)
Bore 66.4 mm (2.614 in)
Exhaust valve - Beginning of adjustment 5,500 rpm
Exhaust valve - end of adjustment with red auxiliary spring 7,000 rpm
Exhaust valve - end of adjustment with yellow auxiliary spring 7,500 rpm
Exhaust valve - end of adjustment with green auxiliary spring 7,900 rpm
Crankshaft bearing 1 grooved ball bearing/1 roller bearing
Conrod bearing Needle bearing
Piston pin bearing Needle bearing
Pistons Aluminum cast
Piston rings 2 rectangular rings
X (upper edge of piston to upper edge of cylinder) 0… 0.10 mm (0… 0.0039 in)
Z (height of control flap) 47.5 mm (1.87 in)
Primary transmission 26:72
Clutch Multidisc clutch in oil bath/hydraulically activated
Gearbox 5-gear, claw shifted
Transmission ratio
1st gear 14:28
2nd gear 15:24
3rd gear 18:24
4th gear 21:24
5th gear 22:21
Ignition Kokusan - Stator 2K-1 / Rotor 2K-2
Ignition point (BTDC) 1.9 mm (0.075 in)
Spark plug NGK BR8 ECM
Spark plug electrode gap 0.60 mm (0.0236 in)
Starting aid Kickstarter
13.4Capacity - gear oil
Gear oil 0.70 l (0.74 qt.) Engine oil (15W/50) ( p. 94)
13.5Capacity - coolant
Coolant 1.2 l (1.3 qt.) Coolant ( p. 94)
Coolant (mixed ready to use) ( p. 94)
To Next Page
Need help?
General
