Betamotor EVO 4t, Workshop Manual, Page: 53 / 80

47
ASSEMBLY
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4.9 OIL PUMPS
N.B. The pumps have reference marks both on the
outer rotor (A) and on the inner rotor (B). During as-
sembly these two marks must remain on the same
side of the pump and must always face towards the
inside of the pump housing.
Position the engine bottom end with
the outer side of the right-hand cran-
kcase half facing upwards. Locate the
pump (1) in its housing in the right
half of the crankcase, after oiling it
well, with the reference marks facing
towards the inside, so that they are
not visible once the pump is fitted.
Insert the shaft (2) with the part with
the two holes facing upwards, fitting
the pin (3) into the second hole from
the top.
Use a feeler gauge to check the clearance betwe-
en inner rotor and outer rotor. If you find that the-
re is play beyond the permitted limits, replace the
pump.
Maximum clearance 0.20 mm.