TOOLS, SCREW THREADS & ENGINE CASE SCREWS
SCREW THREADS
American Standard Taper Pipe..........................................................NPTF
British Association......................................BA
British Standard Fine..........................................................BSF
British Standard Pipe...........................................................BSP
British Standard Whitworth.................................................Whit.
Metric........................................................Met.
Metric Taper Pipe (seeBritish).......................BSP
Unified Course............................................UNC
Unified Fine............................................................UNF

CASE SCREWS  (250/350NC)
6mm x 1.0 tpi Allen cap screw;
use 5mm Allen wrench/socket.
                        6x15  x19
                        6x25  x11 
                        6x35  x5
                        6x40  x7
                        6x50  x5

Cylinderhead      = 6x15  x17

Timing Cover    = 6x25  x3
                       = 6x40  x1
                       = 6x50  x1
                       =  Special x2

Gear Change     = 6x25  x3
                       = 6x35  x2
                       = 6x40  x1

Primary Cover   = 6x40  x5
                        = 6x50   x3

Clutch Cover     = 6x15   x2

Bevel Tower      = 6x35  x2

Lower Bevel      = 6x15  x2

Main Case        = 6x25  x5
                       = 6x35  x1
TOOLS REQUIRED
Metric wrench set.............................................7mm - 19mm
American wrench set.....................1/4 - 3/4
Adjustable wrench (Crescent)..........6 & 12
Metric sockets, 3/8 drive...........10mm - 19mm
Metric socket, each, 1/2 drive.......... .....30mm
American sockets, 3/8 drive...........3/8 -  3/4
American socket, 1/2 drive, 6 pt.....3/4- 15/16
Metric allen wrench & 3/8 driver set.....5-14mm
Screw driver set, straight & Phillips............misc.
3/8 Ratchet, medium
3/8 drive Extension, straight 4.
3/8 drive Extension w/wobbly end, 8 & 12 lg.
3/8 drive Extension, straight 12.
3/8 drive T-handle.
3/8 drive breaker bar.
3/8 to 1/2 and 1/2 to 3/8 adapters.
1/2 drive Extension, straight 6.
1/2 drive breaker bar.
1/2 drive Torque wrench (clicker type).
1/2 drive air gun.
3/8 drive Butterfly gun.
Punch & chisel set.
Rubber Hammer.
Ballpien Hammer.
Needle Nose.
Wire Cutters.
Safety wire pliers.
Snap-ring pliers.
Flat jaw pliers.
Channel-lock pliers.
Vice-grips, small & med.
File set.
Drill set (good quality).
Drill motor, 1/2 chuck, and variable speed.
Hack saw, with selection of blades.
Straight edge.
Square & rulers.
Fine tipped ink markers, selection of colors.
Compressed air (compressor).
Cleaning tank (solvent) & brushes.
Ducati Flywheel/Mag puller (2 types, narrow & wide-case).
Ducati Manual, this one.
Tuning For Speed, by Phil Irving.
Stocked refrigerator!