Yamaha PW50W 2007, Service Manual, Page: 20 / 168

SPEC
MAINTENANCE SPECIFICATIONS
2-4
Item PW50
Automatic centrifugal clutch:
Clutch type Wet, centrifugal automatic
Clutch housing inside diameter 105 mm (4.13 in)
Wear limit 106 mm (4.17 in)
Clutch shoe thickness 1.0 mm (0.04 in)
Wear limit 0.7 mm (0.03 in)
Clutch shoe spring free length 34.5 mm (1.36 in)
Llimit 35.5 mm (1.40 in)
Clutch-in revolution 2700 r/min
Clutch-stall revolution 3500 r/min
Transmission:
Primary reduction system Spur gear
Primary reduction ratio 63/33 (1.909)
Secondary reduction system Shaft drive
Secondary reduction ratio 19/15 x 54/11 (6.218)
Kickstarter:
Kickstarter type Ratchet
Kick clip friction force P 1-5 N (0.34-1.33 lbf) (0.15-0.60 kgf)
Air filter:
Air filter oil grade Foam air-filter oil or SAE10W30SE
Carburetor:
Type x quantity VM12SC x 1
Manufacturer MIKUNI
ID mark 5PG1 10
Main jet #70
Air jet 2.5
Jet needle 3X24-1
Needle jet E-2
Pilot outlet 0.9
Pilot jet #40
Valve seat size 1.2
Starter jet 1 #30
Float height 15.5-17.5 mm (0.61-0.69 in)
Fuel level (using fuel level gauge) 2.0-4.0 mm (0.08-0.16 in)
Idling condition:
Engine idling speed 1650-1750 r/min
Throttle cable free play: 1.5-3.5 mm (0.06-0.14 in)
Reed valve:
Thickness T 0.200 mm (0.0079 in)
Valve stopper height 4.6-5.0 mm (0.18-0.20 in)
Llimit 7.4-7.8 mm (0.291-0.307 in)
Valve bending limit 0.2 mm (0.01 in)
T
5PG-7-10 18 06.5.16, 17:42:14