Installation - MZ 125 SX Repair Manual

I.J..JL 1
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a
Transmission
Adjusting the clearance between the engine housing
and crankshaft or balance shaft
After replacing the crankshaft and balance shaft and/or the
housing, the clearance between the crank and balance shafts
must be adjusted.
Clearance: 0.08 - 0.13 mm
This adjustment is made using thrust washers.
The difference in thickness between the washers may not be
greater than 0.1 mm on the left and right.
Do not use any washers of less than 0.8 mm.
1st option:
1. Screw the housing onto the crankshaft or balance shaft
without transmission.
2. Slide the shafts to one side, tum multiple times and
measure the clearance between the crankshaft and
housing.
2nd option:
1. Measure the housing clearance near the crankshaft bearing
using a depth indicator.
2. Measure the width of the crankshaft cheeks (e.g. with a
micrometer):
3. Housing clearance minus crankshaft cheek width
=
clea-
rance.
There must be a distance of at least (a)
=
0.85 mm on both sides
between the crank cheek of the crankshaft (1) and the balance
weight of the balance shaft (2).
6.10.4 Installation
1. Place the drive and driven shafts into the crankcase.
2. Insert the balance shaft and crankshaft.
3. Adjust clearance (see 6.10.3 "Crankshaft and Balance
Shaft").
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MZ 125 SXJSM Repair Manual