Torque Limits; Special Repairing Materials - Echo SRM-420ES (L): SRM-420ES (U) Service Data

4

1-3 Torque limits

Descriptions
Starter Pawl
system Starter case
Ignition Magneto rotor (Flywheel)
system Ignition coil
Spark plug
Fan cover
Fuel Carburettor
system Intake bellows
Intake insulator
Insulator plate
Fuel tank bracket
Fuel tank
Clutch Clutch shoe
Engine Crankcase
Cylinder
Cylinder cover
Stand
Muffl er
Muffl er cover
Muffl er stay
Others Blade fastening nut
Regular bolt, nut and screw
LM: Left hand thread.* Apply thread locking sealant. (See below)
** The torque differences among four bolts should not exceed 20 kgf•cm (2N•m, 17in•lbf) on one cylinder or
crankcase.

1-4 Special repairing materials

Material
Grease
Oil
Thread locking sealant
SERVICE INFORMATION
Size
M 8
M 5
M 8
M 5
M 14
M 5
M 5
M 5
M 5
M 5
M 5
M 5
M 6
M 5**
M 5**
M 5
M 5
M 6
M 5*
M 5
LM 10
M 3
M 4
M 5
M 6
M 8
M 10
Location
Gear case
Rewind spring
Starter center post
Oil seal inner lips
Drive shaft
Muffl er cover
kgf•cm
60 - 90 6 - 9
30 - 45 3 - 4.5
200 - 240 20 - 24
50 - 70 5 - 7
130 - 170 13 - 17
30 - 45 3 - 4.5
40 - 55 4 - 5.5
30 - 50 3 - 5
50 - 70 5 - 7
30 - 45 3 - 4.5
50 - 70 5 - 7
50 - 70 5 - 7
70 - 110 7 - 11
70 - 110 7 - 11
70 - 110 7 - 11
20 - 30 2 - 3
20 - 30 2 - 3
100 - 140 10 - 14
30 - 45 3 - 4.5
60 - 90 6 - 9
280 - 320 28 - 32
6 - 10 0.6 - 1
15 - 25 1.5 - 2.5
25 - 45 2.5 - 4.5
45 - 75 4.5 - 7.5
110 - 150 11 - 15
210 - 300 21 - 30
Lithium based grease or ECHO XTended Protection
Lubricant
Two-stroke engine oil or engine oil (SAE#30)
Loctite #242, ThreeBond #1324 or equivalent
SRM-420ES
N•m in•lbf
50 - 80
26 - 40
175 - 210
45 - 60
115 - 150
26 - 40
35 - 50
26 - 45
45 - 60
26 - 40
45 - 60
45 - 60
60 - 95
60 - 95
60 - 95
17 - 26
17 - 26
90 - 125
26 - 40
50 - 80
245 - 280
5 - 9
13 - 22
22 - 40
40 - 65
95 - 130
180 - 260
Remarks
TM