SPARE PARTS
Use only genuine UMspare parts. For all lubrication tasks,
use oils and greases recommended by UM. Other makes
make seem similar in their function and appearance, but are
inferior in quality.
SEALS, RETAINING RINGS
AND O - RINGS
Renew all seals, retaining rings and O-rings when servicing
the engine.
All surfaces receiving seals, retaining ring edges and O-rings
must be cleaned.
Apply oil to all paired parts and bearing during reassembly.
Apply grease to the retaining ring edges.
TAB/ SPACER WASHERS
AND SPLIT PINS
After removing them, renew all tab/spacer washers (1) and
split pins. Bend the tabs to fit the flat surfaces of the bolt or
nut once they have been tightened to the specified torque.
B EARINGS AND RETAINING
RINGS
Fit bearings and retaining rings in such a way that the ma-
nufacturers marks remain visible. On fitting retaining rings,
applying a thin film of light lithium soap based grease to
their edges. Where required, apply oil generously when fit-
ting bearings.
WARNING
DO NOT USE COMPRESSED AIR TO DRY BEARINGS. THIS
DAMAGES THE BEARING SURFACES.
7
GENERAL INFORMATION
WORKSHOP MANUAL
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