Exhaust System

Exhaust System EX650A6F/EX650B6F

Full: Full Power

H: Honeycomb Type Catalyst

Silencer [A] with Hole [B] for Oxygen Sensor [C]

Exhaust System

Manifold Mark Position [A]

Silencer Mark Position [A]

Specifications

Item	Standard	Service Limit
Camshafts Cam Height: Exhaust Inlet Camshaft Journal, Camshaft Cap Clearance Camshaft Journal Diameter Camshaft Bearing Inside Diameter Camshaft Runout	35.843  35.957 mm (1.4111  1.4156 in.)	35.74 mm (1.4071 in.)
	36.543  36.657 mm (1.4387  1.4432 in.)	36.44 mm (1.4346 in.)
	0.028  0.071 mm (0.0011  0.0028 in.)	0.16 mm (0.0063 in.)
	23.950  23.972 mm	23.92 mm (0.942 in.)
	(0.9429  0.9438 in.)
	24.000  24.021 mm	24.08 mm (0.948 in.)
	(0.9449  0.9457 in.)
	TIR 0.02 mm (0.0008 in.) or less	TIR 0.1 mm (0.004 in.)
Cylinder Head
Cylinder Compression	(Usable Range)
	961  1 471 kPa (9.8  15.0 kgf/cm², 139	– – –
	 213 psi) at 400 r/min (rpm)
Cylinder Head Warp	– – –	0.05 mm (0.002 in.)
Valves Valve Clearance: Exhaust Inlet Valve Head Thickness: Exhaust Inlet Valve Stem Bend Valve Stem Diameter: Exhaust Inlet Valve Guide Inside Diameter: Exhaust Inlet Valve/Valve Guide Clearance (Wobble Method): Exhaust Inlet Valve Seat Cutting Angle Valve Seating Surface: Width: Exhaust Inlet Outside Diameter: Exhaust Inlet	0.22  0.31 mm (0.0087  0.0122 in.)	– – –
	0.15  0.21 mm (0.0059  0.0083 in.)	– – –
	0.8 mm (0.031 in.)	0.5 mm (0.020 in.)
	0.5 mm (0.020 in.)	0.25 mm (0.0098 in.)
	TIR 0.01 mm (0.0004 in.) or less	TIR 0.05 mm
		(0.002 in.)
	4.455  4.470 mm (0.1754  0.1760 in.)	4.44 mm (0.175 in.)
	4.475  4.490 mm (0.1762  0.1768 in.)	4.46 mm (0.176 in.)
	4.500  4.512 mm (0.1772  0.1776 in.)	4.58 mm (0.180 in.)
	4.500  4.512 mm (0.1772  0.1776 in.)	4.58 mm (0.180 in.)
	0.07  0.14 mm (0.0028  0.0055 in.)	0.27 mm (0.0106 in.)
	0.02  0.08 mm (0.0008  0.0032 in.)	0.22 mm (0.0087 in.)
	32°, 45°, 55°, 60°	– – –
	0.5  1.0 mm (0.020  0.039 in.)	– – –
	0.5  1.0 mm (0.020  0.039 in.)	– – –
	27.6  27.8 mm (1.087  1.094 in.)	– – –
	32.6  32.8 mm (1.283  1.291 in.)	– – –

Specifications

Item	Standard	Service Limit
Valve Spring Free Length: Exhaust Inlet	41.91 mm (1.650 in.) 41.91 mm (1.650 in.)	40.3 mm (1.587 in.) 40.3 mm (1.587 in.)
Cylinder, Pistons Cylinder Inside Diameter Piston Diameter Piston/Cylinder Clearance Piston Ring/Groove Clearance: Top Second Piston Ring Groove Width: Top Second Piston Ring Thickness: Top Second Piston Ring End Gap: Top Second	82.994  83.006 mm	83.10 mm (3.2716 in.)
	(3.2675  3.2679 in.)
	82.969  82.984 mm	82.82 mm (3.2606 in.)
	(3.2665  3.2671 in.)
	0.010  0.037 mm (0.0004  0.0015 in.)	– – –
	0.03  0.07 mm (0.0012  0.0028 in.)	0.17 mm (0.0067 in.)
	0.02  0.06 mm (0.0008  0.0024 in.)	0.16 mm (0.0063 in.)
	0.92  0.94 mm (0.0362  0.0370 in.)	1.02 mm (0.040 in.)
	1.01  1.03 mm (0.0398  0.0406 in.)	1.11 mm (0.044 in.)
	0.87  0.89 mm (0.0342  0.0350 in.)	0.80 mm (0.031 in.)
	0.97  0.99 mm (0.0382  0.0390 in.)	0.90 mm (0.035 in.)
	0.25  0.40 mm (0.0098  0.0157 in.)	0.7 mm (0.028 in.)
	0.40  0.55 mm (0.0157  0.0217 in.)	0.8 mm (0.031 in.)