Yamaha FZ1-N Service Manual

Contents

CAMSHAFTS5-17• The camshaft cap bolts must be tightenedevenly or damage to the cylinder head,camshaft caps, and camshafts will result.• Do not turn the crankshaft when installingthe camshaft to avoid damage orimproper valve timing.6. Tighten:• Camshaft sprocket bolts “1”CAUTION:EC2D1002Be sure to tighten the camshaft sprocketbolts to the specified torque to avoid thepossibility of the bolts coming loose anddamaging the engine.7. Align:• Camshaft punch mark “a”Align the camshaft punch mark “a” and thecamshaft cap arrow mark “b”.8. Install:• Gasket• Timing chain tensioner “1”• Timing chain tensioner bolts “2”CAUTION:EC2D1003The arrow mark “a” on the timing chain ten-sioner should face up.WARNINGEW2D1006Always use a new gasket.9. Turn:• Crankshaft(several turns clockwise)10. Check:• “T” mark “a”Make sure the “T” mark on the pickup rotoris aligned with the crankcase mating sur-face “b”.• Camshaft punch mark “c”Make sure the punch mark “c” on the cam-shaft is aligned with the camshaft caparrow mark “d”.Out of alignment → Adjust.Refer to the installation steps above.Camshaft sprocket bolt24 Nm (2.4 m·kg, 17 ft·lb)Camshaft wrench90890-04143Camshaft wrench90890-04143Timing chain tensioner bolt10 Nm (1.0 m·kg, 7.2 ft·lb)