Honda GX390UT2 User Manual

SERVICE INFORMATION
TORQUE VALUES
ENGINE TORQUE VALUES
STANDARD TORQUE VALUES
Item Tread Dia. (mm)
Torque values
N·m kgf·m lbf·ft
Crankcase cover bolt M8 x 1.25 24 2.4 17
Cylinder head bolt M10 x 1.25 35 3.5 26
Oil drain plug bolt M12 x 1.5 22.5 2.25 17
Connecting rod bolt M8 x 1.25 (Special bolt) 14 1.4 10
Rocker arm pivot bolt M8 x 1.25 (Special bolt) 24 2.4 17
Rocker arm pivot adjusting nut M6 x 0.5 10 1.0 7
Oil level switch nut M10 x 1.25 10 1.0 7
Flywheel nut (GX240, GX270) M16 x 1.5 (Special nut) 128 13.1 94
Flywheel nut (GX340, GX390) M16 x 1.5 (Special nut) 170 17.3 125
Fuel tank nut/bolt M8 x 1.25 24 2.4 18
Fuel tank joint M10 x 1.25 2 0.2 1.5
Air cleaner elbow nut M6 x 1.0 9 0.9 6.6
Muffler nut M8 x 1.25 24 2.4 17
Exhaust pipe nut M8 x 1.25 24 2.4 17
Gear case cover bolt (With reduction) M8 x 1.25 24 2.4 17
Primary drive gear bolt (With reduction) M8 x 1.25 24 2.4 17
Engine stop switch tapping screw M3 x 1.06 0.45 0.046 0.33
Recoil starter center screw M5 x 0.8 (Special bolt) 3.9 0.40 2.9
Fuel strainer cup M24 x 1.0 3.9 0.40 2.9
Item Tread Dia. (mm)
Torque values
N·m kgf·m lbf·ft
Screw 4 mm 2.1 0.21 1.5
5 mm 4.3 0.43 3.1
6 mm 9.0 0.90 6.6
Bolt and nut 5 mm 5.3 0.53 3.9
6 mm 10 1.0 7
8 mm 22 2.2 16
10 mm 34 3.5 25
12 mm 54 5.5 40
Flange bolt and nut 5 mm 5.4 0.55 3.9
6 mm 12 1.2 9
8 mm 23 2.3 17
10 mm 40 4.0 30
SH (Small head) flange bolt 6 mm 9.0 0.90 6.6
CT (Cutting threads) flange bolt (Retightening) 5 mm 5.4 0.55 4.0
6 mm 12 1.2 9
gx240ut2_gx270ut2_gx340ut2_gx390ut2

Honda GX390UT2 Specifications

General

Brand	Honda
Model	GX390UT2
Category	Engine
Language	English