GEN
INFO
1-2
IMPORTANT INFORMATION
300-008
300-016
OR
EAS00020
IMPORTANT INFORMATION
PREPARATION FOR REMOVAL AND DISAS-
SEMBLY
1. Before removal and disassembly, remove
all dirt, mud, dust and foreign material.
2. Use only the proper tools and cleaning
equipment.
Refer to “SPECIAL TOOLS”.
3. When disassembling, always keep mated
parts together. This includes gears, cylin-
ders, pistons and other parts that have
been
“mated” through normal wear. Mated
parts must always be reused or replaced
as an assembly.
4. During disassembly, clean all of the parts
and place them in trays in the order of dis-
assembly. This will speed up assembly
and allow for the correct installation of all
parts.
5. Keep all parts away from any source of
fire.
EAS00021
REPLACEMENT PARTS
Use only genuine Yamaha parts for all replace-
ments. Use oil and grease recom-mended by
Yamaha for all lubrication jobs.
Other brands may be similar in function and
appearance, but inferior in quality.
EAS00022
GASKETS, OIL SEALS AND O-RINGS
1. When overhauling the engine, replace all
gaskets, seals and O-rings. All gasket sur-
faces, oil seal lips and O-rings must be
cleaned.
2. During reassembly, properly oil all mat-
ing parts and bearings and lubricate the
oil seal lips with grease.
EAS00023
LOCK WASHERS/PLATES AND COTTER PINS
After removal, replace all lock washers/plates
1
and cotter pins. After the bolt or nut has been
tightened to specification, bend the lock tabs
along a flat of the bolt or nut.
Summary of Contents for YW50AP
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