Suzuki DF 40 Service Manual page 192

6-49 POWER UNIT
CONROD BIG END SIDE CLEARANCE
Measure conrod big end side clearance with conrod installed
on crank pin as shown.
09900-20803 : Thickness gauge
Conrod big end side clearance
Standard : 0.100 – 0.250 mm (0.0039 – 0.0098 in.)
Service limit : 0.350 mm (0.0138 in.)
If measurement exceeds service limit, replace conrod and /or
crankshaft.
Conrod big end width
Standard : 21.950 – 22.000 mm (0.8642 – 0.8661 in.)
Crank pin width
Standard : 22.100 – 22.200 mm (0.8700 – 0.8740 in.)
CRANK PIN
Inspect crank pin for uneven wear or damage.
Measure crank pin for out - of - round or taper with micrometer.
If crank pin is damaged, out - of - round or taper is out of ser-
vice limit, replace crankshaft.
09900-20202 : Micrometer
Out - of - round : A – B
Taper : a – b
Out-of-round and taper
Service limit : 0.01mm (0.0004 in.)
Crank pin diameter
Standard : 37.982 – 38.000 mm (1.4954 – 1.4961 in.)
A a b
B