Tolerances And Wear Limits - Shindaiwa 300 Service Manual

14 Appendix Tolerances and Wear Limits
Section
300
Dimensions: inches (mm)
Piston Diameter use a micrometer to measure
Standard 1.4157-1.4163
(35.96-35-975) (35.96-35-975) (39.96-39.975) (39.96-39.975) (39.96-39.975) (42.95-42.965)
Limit 1.413 (35.9)
Piston Pin Bore Diameter (Pin Boss Diameter) use a hole gauge to measure
Standard 0.394 (10)-0.0004 (.01)—Models 300 through 488
Limit
Ring Groove Width use a caliper to measure (remove carbon first)
Standard 0.059 (1.5) +0.001-0.002 (+.03-.06)
Piston/Cylinder Clearance use a thickness gauge to measure
Standard 0.00236-0.0078 (.025-.06)—Models 300 through 377
Ring/Ring Groove Clearance
Standard 0.0015-0.0035 (.04-.09)—All Models
Limit 0.0079 (.20)—All Models
SHINDAIWA CYLINDERS CAN NOT BE BORED (Replace if deviation is found).
Cylinder Inside Diameter use a telescoping gauge and micrometer to measure
Standard 1.417 (36)
Limit 1.421 (36.1)
Cylinder Out of Round use a telescoping gauge and micrometer to measure
Standard 0.0002 (.005)—All Models
Limit 0.001 (.03)—All Models
Cylinder Taper use a telescoping gauge and micrometer to measure
Standard 0.0004 (.01)—All Models
Limit 0.0020 (.05)—All Models
Compression Standard
Piston Ring Width use a caliper to measure
Standard 0.059 (1.5)
Limit 0.054 (1.3)
Piston Ring Thickness use a micrometer to measure
Standard 0.059 (1.5)
Limit 0.051 (1.3)
Piston Ring End Gap use a thickness gauge to measure
Standard 0.1-0.3 mm
Limit 0.7 mm
Piston Pin Diameter use a micrometer to measure
Standard 0.3937 (10)—Models 300 through 488
Limit 0.3929 (9.98)—Models 300 through 488
Inside Diameter of Small End of Conecting Rod use a caliper to measure
Standard 0.5512 (14)—Models 300 through 488
Limit 0.5528 (14.04)—Models 300 thrugh 488
Crankshaft Off-Center (runout) use a dial indicator to measure
Standard 0.0007 (0.02)—All Models
Limit 0.0027 (0.07)—All Models
Crankshaft End Play use a thickness gauge to measure
Standard 0.0089-.0138
Limit 0.1-0.35 mm
132
Shindaiwa Inc. 1995
300S 357
1.4157-1.4163 1.5732-1.5788
1.413 (35.9) 1.453 (36.9)
1.417 (36) 1.457 (37)
1.421 (36.1) 1.461 (37.1)
140 psi-156—All Models
0.059 (1.5) 0.059 (1.5)
0.054 (1.3) 0.054 (1.3)
0.059 (1.5) 0.059 (1.5)
0.051 (1.3) 0.051 (1.3)
0.1-0.3 mm 1.6-1.8 mm
0.7 mm 2.2 mm
0.0089-.0138 0.09-.3 mm
0.1-0.35 mm 0.09-.3 mm
360 377
1.691-1.692 1.691-1.692
1.571 (39.9) 1.571 (39.9)
0.039 (1.0) +.001-.002 (+.03-.05) .051 (1.3) +.001/.002
1.575 (40) 1.575 (40)
1.579 (41.1) 1.579 (41.1)
0.059 (1.5) 0.059 (1.5)
0.054 (1.3) 0.054 (1.3)
0.059 (1.5) 0.059 (1.5)
0.051 (1.3) 0.051 (1.3)
1.6-1.8 mm 1.6-1.8 mm
2.2 mm 2.2 mm
0.0089-.0138 0.0089-.0138
0.1-0.35 mm 0.1-0.35 mm
488
1.691-1.692
1.688 (42.88)
(+.03-.06)
.00138-.00197
(.035-.050)
1.693 (43)
1.697 (43.1)
0.0519 (1.3)
0.0468 (1.19)
0.063 (1.6)
0.0551 (1.4)
0.1-0.3 mm
0.7 mm
0.0012-.0094
0.03-.24 mm