50cc Version
Tightening Torques
STEERING ASSEMBLY
Name Torque in Nm
Upper steering ring nut 35 ÷ 40
Lower steering ring nut 12 ÷ 14
Handlebar clamping screw 20 - 25 Nm
FRAME ASSEMBLY
Name Torque in Nm
Engine-swinging arm bolt 33 ÷ 41
Frame-swinging arm bolt 64 - 72
Bolt fixing shock absorber to the chassis 20 ÷ 25 Nm
Bolt fixing shock absorber to the engine 33 ÷ 41
Rear wheel axle 104 ÷ 126
Stand bolt 25 ÷ 30 Nm
Front mudguard fixing screw 4 ÷ 6
FRONT SUSPENSION
Name Torque in Nm
Fork bottom screw 20 ÷ 25
Front wheel axle 45 ÷ 50
Odometer drive screw 6 ÷ 7
FRONT BRAKE
Name
Torque in Nm
Brake fluid pump-hose fitting 20 ÷ 25
Brake fluid pipe-calliper fitting 20 ÷ 22
Calliper tightening screw 20 ÷ 25
Oil bleeding valve 8 ÷ 12
Disc tightening screw (°) 5 ÷ 6.5
N.B.
IN ORDER TO ENSURE AN ADEQUATE LOCKING TORQUE, LUBRICATE THE NUTS BEFORE
ASSEMBLING THEM.
ENGINE ASSEMBLY
Name
Torque in Nm
Ignition spark plug 10 ÷ 15 Nm
Head cover screws 8 ÷ 10
Head-cylinder stud bolt nuts 6 ÷ 7 + 90° + 90° *
Screws fixing head and cylinder to crankcase 8 ÷ 10
Chain tensioner pad screw 5 ÷ 7
Timing chain tensioner screws 8 ÷ 10 Nm
Timing chain tensioner central screw 5 ÷ 6
Camshaft pulley screw 12 ÷ 14
Rocking lever axle and camshaft bearing screw 3 ÷ 4 Nm
Valve clearance adjustment lock nuts 7 ÷ 9 Nm
Engine oil pre-filter cover 25 ÷ 28 Nm
Engine oil drainage cap 25 ÷ 28
Alternator flywheel nut 40 ÷ 44 Nm
Stator screws 3 ÷ 4
Pick-up screws 3 ÷ 4
Oil pump bulkhead screw 4 ÷ 5
Timing chain/oil pump compartment cover screws 4 ÷ 5
Oil decantation labyrinth sheet screws 7 ÷ 8
Oil pump crown screw 8 ÷ 10
Screws fixing oil pump to the crankcase 5 ÷ 6
Oil pump coupling screws 7 ÷ 9 Nm
MSS ZIP 100 4T Characteristics
CHAR - 11