Robin America EH25-2 Specifications Page 46
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- TROUBLESHOOTING
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Rated. / 5. Based on customer reviews
5-5
BREAK-IN OPERATION
An
engine that has been completely overhauled by being fitted with a new piston, rings,
valves
and
connecting rod should be throughly
RUN-
IN
before being put back into service.
/“
Good bearing surfaces and
running
clearances between the various parts can only be established by
operating the engine under reduced speed and loads for a short period
of
time.
While the engine
is
being tested, check
for
oil
leaks.
Make final carburetor adjustment and regulate the engine operating speed.
Steps
10
min
3600
rpm
No
load Step
3
10
min
3000 rpm
No
load
Step
2
10
rnin
2500
rpm
No
load
Step 1
Time
Engine
speed
Load
EH12
1.4
EH17
2.0
EH25
2.8
EH12
3.2
EH17
4.0
EH25
6.4
Step
4
3600 rpm
30
min
Step
5
3600 rpm
60
min
6.
IGNITION SYSTEM
6-1
TYPE
OF
IGNITION SYSTEM
EH
12
employs the
U.
T.
C.
I.
(Universal type Transistor Controlled
Ignition) pointless
ignii
.ion
system.
El417 and
E325
have the
T.
I.
C.
(Transistor Controlled Ignition) pointless ignition system.
As
optional parts, these ignition system
may
be implemented with lamp coil, charge coil and excitor
coil.
6-2
BASIC
THEORY
‘1’0
ensure the easy startability
of
the engine, the step advancing ignition timing system
is
incorporated
in
the ignition coil.
‘I’his
system enables the engine
to
have basically two different ignition timings
according to the engine spced. Following are the explanation how the system works.
1)
At
lower speed
of
the engine
Kotation
of
the
flywheel induces current
I,,
as
this
current flows through the base terminal
of
the
power transister,
it
is
activated and the current
Lz
starts flowing.
As
thc cnginc reaches thc ignition timing, the ignition timing control circuit
for
the lower engine speed
is activated and lcts the current
I,:
flow through the base terminal
of
the power transistor.
‘l’his gcncrates the collcctor current
I,
which
will
bypass the current
I,
and abruptly
shut
off
the current
I?
because the powcr transistor
is
turned
off.
‘I’his sudden current change generates
a
big voltage
on
the secondary side
of
the ignition coil and
which sparks thc spark plug.
/”--
-
42
-
- OVERHEAD 2
- NTEN'TS 3
- SPECIFICATIONS 5
- EH17B EH17BS EH17D EH17DS 6
- EH25B EH25BS EH25D EH25DS 7
- PERFORMANCE 8
- REVOLUTION 9
- CoNTiNuous 10
- FEATURES 12
- Fig. 4-4.) 13
- GOVERNOR 15
- LUBRICATION 15
- “CAKBUKE‘I’OR” 16
- SECTIONAL 17
- POSITIONS 19
- Remarks 20
- M8X20mm 21
- Procedures 22
- 'art 23
- STARTER 24
- CLEANER CASE 25
- (EH12,17) 26
- (EH2.5) 27
- Part to remove 28
- (EHI2,17) 30
- Remarks Procedures 33
- CRANKSHAFT 33
- RETAINER 34
- OPEN ENDS 35
- TOP RING 36
- CONNECTING 37
- MAIN BEARING 38
- CRANKCASE 38
- Bl=SIDE 39
- 00 kgcm 40
- DATA"for 41
- ----... 42
- EH12,17,3 43
- 5") 44
- *..-.. 45
- IGNITION SYSTEM 46
- 3000(r.p.m.) 47
- L""" 48
- AUTOMATIC 49
- DECOMPRESSION SYSTEM 49
- CARBURETOR 50
- STARTING 53
- REASSEMBLE 54
- TROUBLESHOOTING 57
- IGNlTfON SYSTEM 58
- ENGINGE MISFIRES 58
- ENGINE OVERHEATS 58
- BACKFIRES 59
- INSTALLATION 60
- SERVICE 61
- (0.0006) 62
- (0.004) 63
- (0.006) 65
- '-1.1 68
- "D" 69
- IN./EX 70
- EH12/EH17 71
- VALVE SPRING 72
- EH12/17/25 73
- "F 74
- STORAGE 75
- 100-200 76
- Industrial 83
- Engines 83
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