BRP Johnson 4HP, Service Manual, Page: 16 / 185

1-10
GENERAL INFORMATION
*SPECIFICATIONS
Item Unit
Data
4 HP 5 HP 6 HP
CYLINDER HEAD/CAMSHAFT
Cylinder head distortion Limit mm (in) 0.05 (0.002)
Cam height IN STD mm (in) 32.401 – 32.461 (1.2756 – 1.2780)
Limit mm (in) 32.101 (1.2638)
EX STD mm (in) 32.538 – 32.598 (1.2810 – 1.2834)
Limit mm (in) 32.238 (1.2692)
Camshaft journal oil clearance Upper STD mm (in) 0.016 – 0.062 (0.0006 – 0.0024)
Limit mm (in) 0.150 (0.0059)
Lower STD mm (in) 0.016 – 0.052 (0.0006 – 0.0020)
Limit mm (in) 0.150 (0.0059)
Camshaft holder inside diameter Upper STD mm (in) 15.000 – 15.028 (0.5906 – 0.5917)
Lower STD mm (in) 16.000 – 16.018 (0.6299 – 0.6306)
Camshaft journal outside diameter Upper STD mm (in) 14.966 – 14.984 (0.5892 – 0.5899)
Lower STD mm (in) 15.966 – 15.984 (0.6286 – 0.6293)