- 25 -
15
20
"15" mark
"20" mark
5-4-8 CYLINDER HEAD
Remove carbon from the cylinder head, particularly its combustion chamber, and clean the cooling fins.
Also check the head surface for flatness.
If the gasket is stuck on the upper surface of crankcase and on the cylinder head, separate it carefully by
taking care not to damage the mating surface.
NOTE: Replace the cylinder head gasket with a new one.
NOTE: DISTINGTION between the GASKET of EY 15-3 and EY20-3
The pitch of the mounting holes and the outer circumference dimensions of the gasket for EY15-3 and
EY20-3 are same. However, the inner dimensions are different each other.
Furthermore, the marking is provided at the position shown below for identification.
With 8 pieces of 8mm bolt fasten the cylinder head.
NOTE: DISCRIMINATION of CYLINDER HEAD
As stated above, the pitch of the holes of cylinder
head is common to both EY15-3 and EY20-3. For
enabling to discriminate the cylinder head of EY15-
3 from that of EY20-3, an embossed mark 15 is
given to the EY15-3 cylinder head, while no em-
bossed mark is given to the EY20-3 cylinder head.
NOTE: Embossed mark for
EY15-3 Kerosene engine is 15-K, and
EY20-3 Kerosene engine is 20-K.
5-4-9 SPARK PLUG
Install spark plug to cylinder head.
Spark plug : NGK B6HS or BR6HS
Fig. 5-32
EY15-3
EY20-3
Fig. 5-33
Embossed mark
Cylinder Head Tightening torque
22-26N
・
m
(220-260kg
・
cm)
(15.9-18.8ft
・
lb)
NEW SPARK PLUG
RETAIGHTENING
12-15N
・
m
23-27N
・
m
(120-150kg
・
cm)
(230-270kg
・
cm)
(8.7-10.8ft
・
lb)
(16.6-19.5ft
・
lb)
Содержание EY15-3
Страница 1: ...SERVICE MANUAL EY15 3 EY20 3 ENGINES Models PUB ES1609 Rev 12 01 ...
Страница 62: ...PRINTED IN THE USA ...