Cub Cadet Challenger 550, Service Manual

Page: 46 / 255

2-5
750 UV Engine Specifications
“B” Face Width
IN
EX
2.25 mm
2.26 mm
(0.0885 in)
(0.0889 in)
“C” Seat Width
IN
EX
0.9-1.1mm (0.0354-0.0433 in)
1.6 mm (0.0630 in)
0.9-1.1 mm (0.0354-0.0433 in) 1.6 mm (0.0630 in)
“D” Margin Thickness
IN
EX
0.85-1.15 mm (0.0335-0.0453 in) 5.945mm
0.85-1.15 mm (0.0335-0.0453 in) (0.2341 in)
Stem Outside
Diameter IN
EX
5.975-5.990 mm (0.2352-0.2358 in) 5.930mm
5.960-5.975 mm (0.2346-0.2352 in) (0.2335 in)
Guide Inside Diameter
IN 6.000-6.012 mm (0.2362-0.2367 in) 6.050 MM
EX 6.000-6.012 mm (0.2362-0.2367 in) (0.2559 in)
Stem to Guide
Clearance
IN
EX
Stem Run out Limit
Valve Seat Width
IN
EX
0.010-0.037 mm (0.0004-0.0015 in)
0.08mm (0.0031in)
0.025-0.052 mm (0.0010-0.0020 in)
0.10mm (0.0039in)
0.01mm (0.0004in)
0.9-1.1 mm (0.0354-0.0433 in)
0.9-1.1 mm (0.0354-0.0433 in)