Technical Data; Engine, Ignition System, Carburettor, Power Transmission - Sachs Bikes MadAss Reparaturanleitung

TECHNICAL DATA

Engine type
Construction
Valve steering
Valve
Valve clearance, cold
Pistion displacement
Bore
Stroke
Compression ratio
Lubrication system
Cooling
Maximum net power output
Maximum net torque
Air-fi lter
Typ of starter
Ignition system
Ignition timing
Pickup coil resistance
Ignition coils resistance
Spark plug
Carburetor
Main jet #
Idle jet
Jet needle setting groove
Mixture regulation screw
Idle speed
Float level
Throttle cable free play
Power transmission
Clutch
Gear box
Gear ratios
Primary transmission ratio
Chain pinion
Sprocket
Drive chain
8
FY139FMB
One cylinder 4-stroke petrol engine
1 overhead cam with rocker arms
2 valve
intake + exhaust 0.05 mm - 0.08 mm
3
49,5 cm
ø 39 mm
41,4 mm
10:1
forced oil lubrication
air cooled
2,0 kW at 7.000 rpm
3,2 Nm at 4.300 rpm
paper air-fi lter
electric starter / kick starter
transistorized ignition system with electronic ignition control (CDI)
15 ° before TDC at 2.000 rpm / 30 ° before TDC at 3.500 rpm
110-130 Ohm (bl/w-ground)
Primary 550-570 Ohm
NGK CR7 HSA electrode gap 0,6- 0,8 mm
Mikuni type VM 12 101 6
47,5
15
4 th from top
Initial opening 2,5 turns out
1.800 +/- 200 rpm
13 mm - 1 mm
1,0 - 2,0 mm
Wet multi-plate type
4-seed constant mesh, foot operated
1. gear = 36/11 (3,273)
2. gear = 31/16 (1,938)
3. gear = 27/20 (1,350)
4. gear = 24/23 (1,044)
4,059
11 teeth
53 teeth
420, 116 links