4. Position the indicator contact point against the crankshaft at point E (center). Zero the indicator and rotate the crankshaft slowly. Note the amount of crankshaft runout (total indicator reading).
5. If runout exceeds specifications at any of the checkpoints, the crankshaft must be either straightened or replaced.
CRANKSHAFT RUNOUT (max) (total indicator reading) mm
in.
0.05
0.002
1999 Engine Specifications (60 cc)
2
ITEM
SPECIFICATIONS
Model
AP06A2
Type
2 Cycle, Air-Cooled
No. of Cylinders
1
Bore x Stroke
41 x 45 mm (1.614 x 1.772 in.)
Displacement
59 cc (3.6 cu in.)
Compression Ratio
6.6:1
Cylinder Trueness (max)
0.1 mm (0.004 in.)
Piston Ring End Gap Range
0.1-0.8 mm (0.004-0.031 in.)
Piston Skirt/Cylinder Clearance Range
0.07-0.15 mm (0.0028-0.0059 in.)
Piston Pin Diameter Range
11.996-12.000 mm (0.4723-0.4724 in.)
Piston Pin Bore Diameter Range
12.000-12.010 mm (0.4724-0.4728 in.)
Connecting Rod Small End Diameter Range
16.003-16.011 mm (0.6300-0.6304 in.)
Crankshaft Runout (max)
0.05 mm (0.002 in.)
Crankshaft End Play Range
0.05-0.10 mm (0.002-0.004 in.)
2-51