Yamaha WR250F Owner's Service Manual

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Contents

REAR BRAKE5-29EAS2GB2189INSTALLING THE BRAKE CALIPER PISTON1. Clean:• Brake caliper• Brake caliper piston seal• Brake caliper piston dust seal• Brake caliper pistonUse brake fluid for cleaning.2. Install:• Brake caliper piston seals “1”• Brake caliper piston dust seal “2”EWAWARNINGAlways use new brake caliper piston sealand brake caliper piston dust seal.TIP• Apply the silicone grease on the brake caliperpiston seal and brake caliper piston dust seal.• Fit the brake caliper piston seals and brakecaliper piston dust seals onto the slot onbrake caliper correctly.3. Install:• Brake caliper piston “1”TIPApply the brake fluid on the piston outer sur-face.ECANOTICE• Install the piston with its side “a” facingthe brake caliper.• Never force to insert.EAS2GB2190INSTALLING THE REAR BRAKE CALIPER1. Install:• Rear brake caliper• Rear brake caliper bracket2. Install:• Rear wheelRefer to “REAR WHEEL” on page 5-9.• Copper washers• Brake hose• Union boltEWAWARNINGProper brake hose routing is essential to in-sure safe vehicle operation.ECANOTICEMake sure that a bend in its pipe portion “a”is directed as shown and the brake hosetouches the projection “b” on the brake cal-iper.3. Install:• Brake pad springs• Brake pads• Brake pad pin• Brake pad pin plugRefer to “CHECKING THE REAR BRAKEPADS” on page 3-28.4. Pour brake fluid to the brake fluid reservoirup to the specified level.NewNew211a 1Brake hose union bolt30 Nm (3.0 m·kgf, 22 ft·lbf)Brake pad pin17 Nm (1.7 m·kgf, 12 ft·lbf)Brake pad pin plug2.5 Nm (0.25 m·kgf, 1.8 ft·lbf)Recommended brake fluidDOT 4NewT R..bb aT R. .