Service manual

2-4
SPEC
Item
Standard
Limit
Crankshaft
Width “A” 37.90 ~ 37.95mm …
(1.4921 ~ 1.4941in)
Maximum runout “C” … 0.03mm
(0.0012in)
Big end side clearance “D” 0.20 ~ 0.50mm 1.00mm
(0.0079 ~ 0.0197in) (0.0394in)
Big end radial clearance 0.004 ~ 0.017mm …
(0.0002 ~ 0.0007in)
Small end free play “F” 0.40 ~ 0.80mm …
(0.0157 ~ 0.0315in)
Clutch
Clutch type Automatic centrifugal …
Clutch shoe thickness 2.5mm (0.10in) 1.0mm
(0.04in)
Clutch shoe spring free length 26.2mm (1.03in) …
Clutch housing inside diameter 105mm (4.13in) 105.5mm
(4.15in)
Compression spring free length 65.1mm (2.56in) 61.8mm
(2.43in)
Weight outside diameter 15.0mm (0.59in) 14.5mm
(0.57in)
Clutch - in revolution 2800 ~ 3200r/min …
Clutch - stall revolution 4500 ~ 5500r/min …
V-belt
V-belt width 16.5mm (0.65in) 14.8mm
(0.58in)
Kickstarter
Type Ratchet …
Kick clip tension 0.7 ~ 2N (0.07 ~ 0.2kgf) …
(0.15 ~ 0.44lb)
Transmission
Transmission type V-belt automatic …
Primary reduction system Helical gear …
Primary reduction ratio 52/13 (4.000) …
Secondary reduction system Super gear …
Secondary reduction ratio 43/13(3.307) …
Single speed automatic 2.693 ~ 0.889:1 …
Maximum main axle runout … 0.02mm
(0.0008in)
Maximum drive axle runout … 0.02mm
(0.0008in)
ENGINE SPECIFICATIONS