ATC90 74-78

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ATC90 , 2nd generation introduced 1974, ends 1978, Features:

• Model Code for 74-78 models "942 "
• 4 speed auto clutch transmission High & Low range sub transmission
• 22x11x3.5 low pressure tyres, (1974) 22x11x8 split rim (1975~)
• Tyre pressure 0.1 kg/cm2 (1.5 PSI ) 1973. 0.15kg/cm2 (2.2PSI) 1974~
• Length 1570mm, width 970mm, Height 880mm, Weight 93.5kg
• Engine bore 50mm, Stoke 45.6mm, CR 7.5:1 Displacement 89.5cc
• Carb Keihin 556A, main jet #65, slow #35.
• Engine number located below Hi-Lo range selector.
• Frame number located on steering head stock left side
• Engine Oil capacity1.0 ltr
• Fuel tank capacity 6.5ltr,5.5ltr main and 1.0ltr reserve
• Point gap 0.3 - 0.4 mm (12 to 16 thou)
• Plug gap 0.6 - 0.7 mm (24 to 28 thou)
• Plug NGK D8HS
• Valve clearance (cold) 0.05mm