Sym JOYMAX 250 User Manual

1. General Information
1-10
Torque Values
The torque values listed in above table are for more important tighten torque values. Please see standard
values for not listed in the table.
Standard Torque Values for Reference
Type
Tighten Torque
Type
Tighten Torque
5 mm bolt、nut
0.45~0.6kgf-m
5 mm screw
0.35~0.5kgf-m
6 mm bolt、nut
0.8~1.2kgf-m
6 mm screw、SH nut
0.7~ 1.1kgf-m
8 mm bolt、nut
1.8~2.5kgf-m
6 mm bolt、nut
1.0 ~1.4kgf-m
10 mm bolt、nut
3.0~4.0kgf-m
8 mm bolt、nut
2.4 ~3.0kgf-m
12 mm bolt、nut
5.0~6.0kgf-m
10 mm bolt、nut
3.5~4.5kgf-m
Engine Torque Values
Item
Q’ty
Thread Dia. (mm)
Torque Value(kgf-m)
Remarks
Cylinder stud bolt
4
10
1.0~1.4
Cylinder head nut
4
8
3.6~4.0
Cylinder head right bolt
2
8
2.0~2.4
Cylinder head side cover bolt
2
6
1.0~1.4
Cylinder head cover bolt
4
6
1.0~1.4
Cylinder head stud bolt (inlet pipe)
2
6
1.0~1.4
Cylinder head stud bolt (EX. pipe)
2
8
2.4~3.0
Air inject pipe bolt
4
6
1.0~1.4
Air inject reed valve bolt
2
3
0.07~0.09
Tappet adjustment screw nut
4
5
0.7~1.1
Apply oil to thread
Spark plug
1
10
1.0~1.2
Tensioner lifter bolt
2
6
1.0~1.4
Carburetor insulator bolt
2
6
0.7~1.1
Oil pump screw
2
3
0.1~0.3
Water pump impeller
1
7
1.0~1.4
Engine left cover bolt
9
6
1.1~1.5
Engine oil draining bolt
1
12
3.5~4.5
Engine oil strainer cap
1
30
1.3~1.7
Mission draining bolt
1
8
0.8~1.2
Mission filling bolt
1
10
1.0~1.4
Clutch driving plate nut
1
28
5.0~6.0
Clutch outer nut
1
14
5.0~6.0
Drive face nut
1
14
8.5~10.5
ACG. Flywheel nut
1
14
5.0~6.0
Crankcase bolt
7
6
0.8~1.2
Mission case bolt
7
8
2.6~3.0
Muffler mounting bolt
3
10
3.2 ~3.8
Muffler mounting nut
2
8
1.0 ~1.2
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Sym JOYMAX 250 Specifications

General

Brand	Sym
Model	JOYMAX 250
Category	Scooter
Language	English