Suzuki GA413, Service Manual

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Flywheel
If ring gear is damaged, cracked or worn, replace flywheel.
If the surface contacting clutch disc is damaged, or excessively
worn, replace flywheel.
Check flywheel for face runout with dial gauge.
If runout exceeds its limit, replace flywheel.
Limit on runout: 0.2 mm (0.0078 in.)
Cylinder Block
Distortion of gasketed surface
Using straightedge and thickness gauge, check gasketed surface
for distortion and, if flatness exceeds its limit, correct it.
Honing or reboring cylinders
1) When any cylinder needs reboring, all other cylinders must also
be rebored at the same time.
2) Select oversized piston according to amount of cylinder wear.
3) Using micrometer, measure piston diameter.
1. 23 mm (0.91 in.)
4) Calculate cylinder bore diameter to be rebored.
D = A + B – C
D:Cylinder bore diameter to be rebored.
A: Piston diameter as measured.
B: Piston clearance = 0.02 – 0.04 mm
(0.0008 – 0.0015 in.)
C:Allowance for honing = 0.02 mm (0.0008 in.)
6A-12 ENGINE MECHANICAL
GA413
supple
Item Standard Limit
Flatness
0.03 mm
(0.0012 in.)
0.06 mm
(0.0024 in.)
Size Piston diameter
O/S 0.25
74.220 – 74.230 mm
(2.9220 – 2.9224 in.)
O/S 0.50
74.470 – 74.480 mm
(2.9319 – 2.9323 in.)