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IMPORTANT INFORMATION
GEN
INFO
EB101000
IMPORTANT INFORMATION
PREPARATION FOR REMOVAL PROCE-
DURES
1. Remove all dirt, mud, dust and foreign ma-
terial before removal and disassembly.
2. Use proper tools and cleaning equipment.
3. Refer to the “SPECIAL TOOLS” section.
4. When disassembling the machine, always
keep mated parts together. This includes
gears, cylinders, pistons and other parts
that have been “mated” through normal
wear. Mated parts must always be reused
or replaced as an assembly.
5. During machine disassembly, clean all
parts and place them in trays in the order of
disassembly. This will speed up assembly
and allow for the correct installation of all
parts.
6. Keep all parts away from any source of fire.
EB101010
REPLACEMENT PARTS
1. Use only genuine Yamaha parts for all re-
placements. 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.
EB101020
GASKETS, OIL SEALS AND O-RINGS
1. Replace all gaskets, seals and O-rings
when overhauling the engine. All gasket
surfaces, oil seal lips and O-rings must be
cleaned.
2. Properly oil all mating parts and bearings
during reassembly. Apply grease to the oil
seal lips.