User manual YAMAHA WR250FP
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Manual abstract: user guide YAMAHA WR250FP
Detailed instructions for use are in the User's Guide.
[. . . ] If you have a manual you think we should have, please drop us a line, and we will give it a home. You should own the original manual to be able to download this backup. Any reprinting or unauthorized use without the written permission of Yamaha Motor Co. This model is the culmination of Yamaha's vast experience in the production of pacesetting racing machines. [. . . ] Install: G Valve seat G Screw (valve seat) 1 G Needle valve 2 G Float 3 G Float pin 4 NOTE: G After installing the needle valve to the float, install them to the carburetor. Install: G Pilot screw 1 G Spring 2 G Washer 3 G O-ring 4 Note the following installation points: G Turn in the pilot screw until it is lightly seated. G Turn out the pilot screw by the number of turns recorded before removing. Pilot screw: 2 turns out * 1 turn out ** 1-1/8 turns out (example) * For EUROPE ** For CDN, ZA, AUS and NZ 13. Install: G Diaphragm (air cut valve) 1 G Spring (air cut valve) 2 G O-ring 3 G Air cut valve cover 4 G Screw (air cut valve cover) 5 Install: G Diaphragm (accelerator pump) 1 G Spring 2 G O-ring 3 G Accelerator pump cover 4 G Bolt (accelerator pump cover) 5 NOTE: Install the diaphragm (accelerator pump) with its mark a facing the spring. Install: G Carburetor breather hose 1 NOTE: Install the carburetor breather hoses to the carburetor so that the hoses do not bend near where they are installed. check that the link lever 4 has free play b by pushing lightly on it. Gradually turn out the adjusting screw while moving the link lever until it has no more free play. 1 Cylinder head cover removal Part name CYLINDER HEAD COVER REMOVAL Seat and fuel tank Carburetor Spark plug Cylinder head breather hose Oil tank breather hose Bolt (cylinder head cover) Cylinder head cover Cylinder head cover gasket Timing chain guide (top side) Q'ty Remarks 1 Camshaft removal Part name CAMSHAFTS REMOVAL Timing mark accessing screw Crankshaft end accessing screw Timing chain tensioner cap bolt Timing chain tensioner Camshaft cap Clip Exhaust camshaft Intake camshaft Q'ty 1 1 1 1 2 2 1 1 Remarks Remove: G Timing mark accessing screw 1 G Crankshaft end accessing screw 2 2. Mark a on the rotor with the align mark b on the crankcase cover when piston is at T. NOTE: In order to be sure that the piston is at Top Dead Center, the punch mark c on the exhaust camshaft and the punch mark d on the intake camshaft must align with the cylinder head surface, as shown in the illustration. Remove: G Bolt (camshaft cap) 1 G Camshaft cap 2 G Clip NOTE: Remove the bolts (camshaft cap) in a crisscross pattern, working from the outside in. The bolts (camshaft cap) must be removed evenly to prevent damage to the cylinder head, camshafts or camshaft caps. Remove: G Exhaust camshaft 1 G Intake camshaft 2 NOTE: Attach a wire 3 to the timing chain to prevent it from falling into the crankcase. G Do not turn the camshaft when measuring clearance with the Plastigauge®. Check: G While pressing the tensioner rod lightly with fingers, use a thin screwdriver 1 and wind the tensioner rod up fully clockwise. G When releasing the screwdriver by pressing lightly with fingers, make sure that the tensioner rod will come out smoothly. Mark a on the rotor with the align mark b on the crankcase cover when piston is at T. Fit the timing chain 3 onto both camshaft sprockets and install the camshafts on the cylinder head. NOTE: The camshafts should be installed onto the cylinder head so that the punch mark c on the exhaust camshaft and the punch mark d on the intake camshaft must align with the cylinder head surface, as shown in the illustration. NOTE: G Before removing the clips, cover the cylinder head with a clean rag to prevent the clips from into the cylinder head cavity. The bolts (camshaft cap) must be tightened evenly, or damage to the cylinder head, camshaft caps, and camshaft will result. [. . . ] Rebound damping tends to become stronger and the front fork may sink deeply over a series of gaps. Use of stiff spring Generally a stiff spring gives a stiff riding feeling. Rebound damping tends to become weaker, resulting in lack of a sense of contact with the road surface or in a vibrating handlebar. Å Coverage of spring by weight i Rider weight 1 Soft 2 Standard 3 Stiff Front fork setting parts G Adjustment washer 1 TYPE (thickness) T = 2. [. . . ]
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