Robin EH12 Service Manual

Unit: rnrn (in)
T
EH12/17/25
ITEM
VALVE SEAT ANGLE(IN. EX.)
0 Valve cutter angle(a)
0 Valve contact width(b)
12-2 TORQUE SPECIFICATIONS
EH12/17type
STD
a: 90"
b : 0.7 - 1 .O
(0.028 - 0.039)
Limit
2.0
(0.079)
TIGHTENING TORQUE
kg-cm
ft-lb
Nom
DESCRIPTION
Cylinder head bolts
16.6 - 19.5 22.5 - 26.5 230 - 270
Connecting rod cap bolts
EH12
12.2-14.4 6.5-8.3
16.6-19.6
8.8-11.2 170-200 90-115
EH17 EH12 EH17 EH12 EH17
Flywheel nut 600 - 650
5.7
- 7.2 7.8 - 9.8
80
- 100
Main bearing cover bolts
43 - 47 58.8 - 63.7
New spark plug
16.6 - 19.5 22.6 - 26.5 230 - 270
Retightening
8.7 - 10.9
11.8 - 14.7
120
- 150
Spark plug
EH25 type
TlGHTENfNG TORQUE
kg cm
ft- Ib
N-m
DESCRIPTION
Cylinder head bolts
12.3 - 13.7
16.7
- 18.6
170- 190
Main bearing cover bolts
43 - 47 58.8 - 63.7
600
- 650 Flywheel nut
16.3 - 19.8
21.3
- 26.9
225
- 275
Connecting rod cap bolts
24.6 - 30.3
33.3
- 41.2
340
- 420
New spark plug
120- 150
11.8 - 14.7
8.7 - 10.9
Retightening 230 - 270 22.6 - 26.5
16.6
- 19.5
Spark plug
- 69 -

Robin EH12 Specifications

General

Ignition System	Transistorized magneto ignition
Starting System	Recoil starter
Bore x Stroke	60 mm (2.36 in) x 43 mm (1.69 in)
Max Output	3.6 kW (4.8 HP) at 3, 600 rpm
Engine Type	4-Cycle, Air cooled, Single cylinder, OHV