Yamaha SR400 2014 Service Manual

CYLINDER HEAD5-7EAS24130REMOVING THE CYLINDER HEAD1. Remove:• Crankcase cover (left)Refer to “GENERATOR” on page 5-46.2. Align:• “T” mark “a” on the AC magneto(with the match mark “b” on the crankcase)▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼a. Turn the AC magneto counterclockwise.b. When the piston is on the compressionstroke, align the AC magneto “T” mark “a”with the mark “b” on the crankcase. (TDC)▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲3. Remove:• Oil delivery pipe “1”4. Remove:• Cylinder head cover assembly “1”TIP• Loosen bolts and nuts in a crisscross pattern.• Loosen each bolt and nut 1/2 of a turn at atime. After all of the bolts and nuts are fullyloosened, remove them.5. Loosen:• Camshaft sprocket boltTIPWhile holding the AC magneto “1” with the rotorholding tool “2”, loosen the camshaft sprocketbolt.6. Remove:• Timing chain tensioner cap• Timing chain tensioner assembly• Camshaft sprocket bolt “1”• Timing chain “2”• Camshaft sprocket “3”• Camshaft “4”TIPTo prevent the timing chain from falling into thecrankcase, fasten it with a wire.ab1Rotor holding tool90890-01235Universal magneto and rotorholderYU-01235112