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Crankshaft thrust clearance
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• With the crankshaft, right-side thrust bearing and left-side thrust bearing inserted in the upper crankcase, use a thick ness gauge to measure the thrust clearance on the left-side.
NOTE:
Push the crankshaft to the starter clutch side, so that there is no clearance on the right-side thrust bearing.
Thrust clearance
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If the th rust clearance exceeds the standard range, adjust the thrust clearance by the following procedures:
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R emove the right-side thrust bearing and measure its thick ness with a micrometer. If the thickness of the right-side thrust bearing is below standard, replace with a new bearing and once again perform the thrust clearance measurement listed above, checking to make sure it is within standard.
Right-side thrust bearing thickness
Standard: 2.425 - 2.450 mm (0.0955 - 0.0965 in)
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U pper case
® ® ® ® ®
Lower case
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CD 
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If the right-side thrust bearing is within the standard range, reinsert the right-side thrust bearing and remove the left· side thrust bearing.
• As shown in the illustration, use a thickness gauge to measure the clearance before inserting of the left-side thrust bearing, and select a left-side thrust bearing from the selection table.
Thrust bearing selection table
| Clearance before inserting left-side thrust bearing | Color (Part No.) | Thrust bearing thickness | Thrust clearance |
| 2.420 - 2.445 mm | Red | 2.350 - 2.375 mm | 0.045 - 0.095 mm |
| (0.0953 - 0.0963 in) | (12228-43411) | (0.0925 - 0.0935 in) | |
| 2.445 - 2.470 mm | Black | 2.375 - 2.400 mm | |
| (0.0963 - 0.0972 in) | (12228-43412) | (0.0935 - 0.0945 in) | |
| 2.470 - 2.495 mm | Blue | 2.400 - 2.425 mm | |
| (0.0972 - 0.0982 in) | (1.2228-43413) | (0.0945 - 0.0955 in) | (0.0018 - 0.0037 in) |
| 2.495 - 2.520 mm | Green | 2.425 - 2.450 mm | |
| (0.0982 - 0.0992 in) | (12228-43414) | (0.0955 - 0.09Q5 in) | |
| 2.520 - 2.545 mm | Yellow | 2.450 - 2.475 mm | |
| (0.0992 - 0.1002 in) | (12228-43415) | (0.0965 - 0.0974 in) | |
| 2.545 - 2.575 mm | White | 2.475 - 2.500 mm | 0.045 - 0. 100 mm |
| (0.1002 - 0.1014 in) | (12228-43416) | (0.0974 - 0.0984 in) | (0.0018 - 0.0039 in) |
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NOTE:
Right-side thrust bearing has the same specification as the GREEN (12228-43414) of left-side thrust bearing.