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主轴颈分组标识(5位）
Crankshaft bearing bushes are divided into three groups according to their thickness.
From thin to thick, blue, green and red marks are painted on the side of the bushes to
distinguish them.
Examples of pairing:
If the group numbers of the corresponding positions of the engine body and the
crankshaft are the same, then 1 select the blue-marked bearing bush, 2 select the
green-marked bearing bush, 3 select the red-marked bearing bush,
If the group numbers of the corresponding positions of the engine body and the
crankshaft are different, the bearing bush is selected according to the larger number; For
example, if the group numbers of the two are 1 and 3 respectively, the red-marked
bearing bush will be selected according to 3.
Body and engine base
1. Check whether the engine body and base are cracked, damaged and corroded; If yes,
replace it.
2. Check the cooling water channel for grease content or blockage; If yes, clean it.
Check the oil pump
1. Remove the screws and the oil pump.
2. Remove the screws fixing the oil pump cover and remove the oil pump cover.
3. Check the clearance of oil pump rotor. If it does not meet the specified value, replace it.
Clearance between outer
rotor and shell
0.12～0.16 mm
Clearance between outer
rotor and inner rotor
0.1～0.2 mm
Clearance between rotor
and oil pump cover
0.03~0.12mm
Check and mount exhaust pipe
1. Remove the exhaust assembly.
2. Disassemble the exhaust pipe assembly
3. Check the anode
If the anode has been corroded by more than half, please replace it
If there is scale, peeling or oil stain on the anode surface, please clean it.
Note:
Do not apply grease, oil or paint to the anode.
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