Yamaha Fz1n Service Manual

ENGINE SPECIFICATIONS
2-4
Limit 4.425 mm (0.1742 in)
Valve guide inside diameter (intake) 4.000–4.012 mm (0.1575–0.1580 in)
Limit 4.050 mm (0.1594 in)
Valve guide inside diameter (exhaust) 4.500–4.512 mm (0.1772–0.1776 in)
Limit 4.550 mm (0.1791 in)
Valve-stem-to-valve-guide clearance (intake) 0.010–0.037 mm (0.0004–0.0015 in)
Limit 0.080 mm (0.0032 in)
Valve-stem-to-valve-guide clearance (exhaust) 0.025–0.052 mm (0.0010–0.0020 in)
Limit 0.100 mm (0.0039 in)
Valve stem runout 0.010 mm (0.0004 in)...

ENGINE SPECIFICATIONS
2-5
Offset 0.50 mm (0.0197 in)
Offset direction Intake side
Piston pin bore inside diameter 17.002–17.013 mm (0.6694–0.6698 in)
Piston pin outside diameter 16.991–17.000 mm (0.6689–0.6693 in)
 
Piston ringTop ringRing type Barrel
Dimensions (B  × T) 0.90  × 2.75 mm (0.04  × 0.11 in)
End gap (installed) 0.15–0.25 mm (0.0059–0.0098 in)
Ring side clearance 0.030–0.065 mm (0.0012–0.0026 in)
2nd ring
Ring type Taper
Dimensions (B  × T) 0.80  × 2.75 mm (0.03  × 0.11 in)
End gap...

ENGINE SPECIFICATIONS
2-6
Journal oil clearance (using plastigauge®) 0.014–0.037 mm (0.0006–0.0015 in)
Bearing color code 0.White 1.Blue 2.Black 3.Brown 4.Green
 
ClutchClutch type Wet, multiple-disc
Clutch release method Outer pull, rack and pinion pull
Clutch lever free play 10.0–15.0 mm (0.39–0.59 in)Friction plate thickness 2.90–3.10 mm (0.114–0.122 in)
Wear limit 2.80 mm (0.1102 in)
Plate quantity 9 pcs
Clutch plate thickness 1.90–2.10 mm (0.075–0.083 in)
Plate quantity 8 pcs
Warpage limit 0.10 mm...

ENGINE SPECIFICATIONS
2-7
Idling conditionEngine idling speed 1100–1300 r/min
Intake vacuum 30.0 kPa (8.9 inHg) (225 mmHg)
Water temperature 95.0–105.0  °C (203.00–221.00  °F)
Oil temperature 80.0–90.0  °C (176.00–194.00  °F)
Throttle cable free play 3.0–5.0 mm (0.12–0.20 in)
  

CHASSIS SPECIFICATIONS
2-8
EAS20300
CHASSIS SPECIFICATIONS
ChassisFrame type Diamond
Caster angle 25.00  °
Trail 109.0 mm (4.29 in)
 
Front wheel
Wheel type Cast wheel
Rim size 17M/C x MT3.50
Rim material Aluminum
Wheel travel 130.0 mm (5.12 in)
Radial wheel runout limit 1.0 mm (0.04 in)
Lateral wheel runout limit 0.5 mm (0.02 in)
 
Rear wheelWheel type Cast wheel
Rim size 17M/C x MT6.00
Rim material Aluminum
Wheel travel 130.0 mm (5.12 in)
Radial wheel runout limit 1.0 mm (0.04 in)
Lateral wheel runout...

CHASSIS SPECIFICATIONS
2-9
Master cylinder inside diameter 16.00 mm (0.63 in)
Caliper cylinder inside diameter 30.20 mm (1.19 in)
Caliper cylinder inside diam eter 27.00 mm (1.06 in)
Recommended fluid DOT 4
 
Rear brake
Type Single disc brake
Operation Right foot operation
Brake pedal free play 4.3–9.3 mm (0.17–0.37 in)
Rear disc brakeDisc outside diameter  × thickness 245.0  × 5.0 mm (9.65  × 0.20 in)
Brake disc thickness li mit 4.5 mm (0.18 in)
Brake disc deflection li mit 0.15 mm (0.0059 in)
Brake...

ELECTRICAL SPECIFICATIONS
2-10
EAS20310
ELECTRICAL SPECIFICATIONS
Vo l t a g eSystem voltage 12 V
 
Ignition system
Ignition system Transistorized coil ignition (digital)
Ignition timing (B.T.D.C.) 5.0  °/1200 r/min
 
Engine control unit
Model/manufacturer TBDF20/DENSO
 
Transistorized coil ignitionCrankshaft position sensor resistance 336–504  Ω at 20 °C (68 °F)
 
Ignition coil
Model/manufacturer F6T558/MITSUBISHI
Minimum ignition spark gap 6.0 mm (0.24 in)
Primary coil resistance 1.19–1.61  Ω at 20 °C...

ELECTRICAL SPECIFICATIONS
2-11
Coolant temperature warning light LED
Engine trouble warning light LED
Immobilizer system indicator light LED
 
Electric starting systemSystem type Constant mesh
 
Starter motorModel/manufacturer SM13/MITSUBA
Power output 0.80 kW
Armature coil resistance 0.0250–0.0350  Ω
Brush overall length 12.5 mm (0.49 in)
Limit 5.00 mm (0.20 in)
Brush spring force 7.65–10.01 N (27.54–36.03 oz) (780–1021 gf)
Commutator diameter 28.0 mm (1.10 in)
Limit 27.0 mm (1.06 in)
Mica undercut...

TIGHTENING TORQUES
2-12
EAS20320
TIGHTENING TORQUES
EAS20330
GENERAL TIGHTENING TORQUE SPECIFI-
CATIONS
This chart specifies tightening torques for stan-
dard fasteners with a standard ISO thread 
pitch. Tightening torque specifications for spe-
cial components or assemblies are provided 
for each chapter of this manual. To avoid 
warpage, tighten multi-fastener assemblies in 
a crisscross pattern and progressive stages 
until the specified tightening torque is reached. 
Unless otherwise specified,...

TIGHTENING TORQUES
2-13
EAS20340
ENGINE TIGHTENING TORQUESItem Thread 
size Q’ty Tightening torque Remarks
Spark plug M10 4 13 Nm (1.3 m·kg, 9.4 ft·lb)
Cylinder head nut M10 10 See NOTE
Cylinder head bolt M6 2 12 Nm (1.2 m·kg, 8.7 ft·lb)
Camshaft caps bolt M6 28 10 Nm (1.0 m·kg, 7.2 ft·lb)
Cylinder head cover bolt M6 6 12 Nm (1.2 m·kg, 8.7 ft·lb)
Cylinder head stud bolt (exhaust 
pipe) M8 8 15 Nm (1.5 m·kg, 11 ft·lb)
Air indication system cap bolt M6 4 10 Nm (1.0 m·kg, 7.2 ft·lb)
Camshaft sprocket bolt...