Engine

Z425

Make..............Briggs & Stratton

Model Number..............40 ELS

Bore..............75.4 mm (2.97 in.)

Stroke..............73.4 mm (2.89 in.)

Displacement..............656 cm3 (40.03 cu in.)

Cylinders..............V-Twin

Cycle..............Four

Armature Air Gap..............0.20 - 0.30 mm (0.008 - 0.012 in.)

Valve Clearance (Cold)..............0.10 - 0.15 mm (0.004 - 0.006 in.)

Spark Plug Gap..............0.76 mm (0.030 in.)

Spark Plug Torque..............20 N•m (180 lb-in.)

Z645

Make..............Kawasaki

Model Number..............FS730V

Bore..............78 mm (3.070 in.)

Stroke..............76 mm (2.992 in.)

Displacement..............726 cm3 (44.3 cu in.)

Cylinders..............V-Twin

Cycle..............Four

Armature Air Gap..............0.25 - 0.40 mm (0.009 - 0.015 in.)

Valve Clearance (Cold)..............0.075 - 0.125 mm (0.002 - 0.005 in.)

Spark Plug Gap..............0.75 mm (0.029 in.)

Spark Plug Torque..............20 N•m (180 lb-in.)