Inspect the oil pump in the following procedures:
| Caution do not attempt to disassemble the oil pump. The oil pump is available only as an assembly. |

Oil pump drive sprocket removal and installation
Refer to “engine bottom side disassembly” in section 1d and “engine bottom side assembly” in section 1d .
Oil pump removal and installation
SpecificationsBalancer shaft disassembly and assembly
Refer to “engine bottom side disassembly” (page 1d-
49).
Refer to “engine bottom side assembly” .
Disassembly
Remove the balancer shaft. Refer to “engine bottom side disassembly” .
Remove the washers, balancer gear and dampers
from the shaft.
Assembly
Assembly is in the re ...
Ignition coil inspection
Refer to “electrical components location” in section 0a .
Ignition coil primary peak voltage
Remove the air cleaner box. Refer to “air cleaner box removal and
installation” in section 1d .
Disconnect all ignition coil. Refer to “ignition coil and spark plug
removal and installation” .
...
Piston and piston ring inspection
Refer to “piston ring removal and installation” .
Piston diameter
Measure the piston diameter using the micrometer at 15
mm (0.6 In) “a” from the skirt end. If the piston diameter
is less than the service limit, replace the piston.
Special tool
(a): 09900–20203 (micrometer (50 –
75 mm))
Pis ...