Yamaha Tracer MT09TRA - Service manual > Important information

Preparation for removal and disassembly

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, cylinders, 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 disassembly.

This will speed up assembly and allow for the correct installation of all parts.

5. Keep all parts away from any source of fire.

Replacement parts

Use only genuine Yamaha parts for all replacements.

Use oil and grease recommended by Yamaha for all lubrication jobs. Other brands may be similar in function and appearance, but inferior in quality.

Gaskets, oil seals and o-rings

1. When overhauling the engine, replace all gaskets, seals and O-rings. All gasket surfaces, oil seal lips and O-rings must be cleaned.

2. During reassembly, properly oil all mating parts and bearings and lubricate the oil seal lips with grease.

1.  Oil
2. Lip
3.  Spring
4.  Grease

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.

Bearings and oil seals

Install bearings "1" and oil seals "2" so that the manufacturer marks or numbers are visible.

When installing oil seals, lubricate the oil seal lips with a light coat of lithium-soap-based grease. Oil bearings liberally when installing, if appropriate.

NOTICE

Do not spin the bearing with compressed air because this will damage the bearing surfaces.

Circlips

Before reassembly, check all circlips carefully and replace damaged or distorted circlips. Always replace piston pin clips after one use.

When installing a circlip "1", make sure the sharp-edged corner "2" is positioned opposite the thrust "3" that the circlip receives.

Rubber parts

Check rubber parts for deterioration during inspection.

Some of the rubber parts are sensitive to gasoline, flammable oil, grease, etc. Do not allow any items other than the specified one to contact the parts.

See also: