If either journal has worn past the service limit, replace
the balancer shaft with a new one.
If the measured journal diameters are not less than the
service limit, but do not coincide with the original diameter
markings on the balancer shaft, write new marks on it.
Balancer Shaft Diameter Marks
27.987 ∼ 27.993 mm (1.1019 ∼ 1.1021 in.)
27.994 ∼ 28.000 mm (1.1021 ∼ 1.1024 in.)
∆: Balancer Shaft Journal Diameter Marks, "
Put the lower crankcase half on the upper crankcase half
without bearing inserts, and tighten the case bolts to the
specified torque and sequence (see Crankcase Assem-
Measure the crankcase bearing bore diameter for the bal-
ancer shaft, and mark the upper crankcase half in accor-
dance with the bore diameter.
The mark already on the upper crankcase half should
almost coincide with the measurement.
Crankcase Bearing Bore Diameter Marks
31.000 ∼ 31.008 mm (1.2205 ∼ 1.2208 in.)
31.009 ∼ 31.016 mm (1.2208 ∼ 1.2211 in.)
: Crankcase Bearing Bore Diameter Marks, "
or no mark.
[A] No. 1 Journal
[B] No. 2 Journal
Select the proper bearing insert in accordance with the
combination of the crankcase and the balancer shaft cod-
Install the new inserts in the crankcase and check in-
sert/journal clearance with a plastigage.
Balancer Shaft Bearing Insert Selection
Bearing Bore Diameter
Journal Diameter Mark
" mark or