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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 thoroughly
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.
Step
10
min.
3,600
rpm
No
Load
Step
3
10
min.
3,000
rpm
No
Load
Step 2
10
min.
2,500
rpm
No
Load
Step
1
Time Engine Speed
Load
Step
4
3,600
rpm
30
min.
EH36
7.0
kW
(9.5
HP)
EH41
6.3
kW
(8.5
HP) EH36
3.5
kW
(4.8 HP)
EH41
3.2 kW
(4.3 HP)
*
Step
5
60
min.
3,600
rpm
Table.
5-2
6.
MAGNETO
6-1
FLYWHEEL
MAGNETO
The ignition system
of
the EH36/EH41 is a pointless flywheel magneto with automatic advancing char-
acteristic.
Being different from the breaker point type ignition system, this system is completely free from such
troubles as starting-up failure due to dirty, burnt or corroded point surface.
The electronic automatic advancing ensures extremely easy starts and stable high performance at oper-
ating speed
by
advancing the ignition timing to the most suitable point.
6-2
BASIC
THEORY
(1)
Revolution of the flywheel generates electricity
on
the primary side of the ignition coil, and the base
current
11
flows
to
the power transistor.
Current
11
turns the power transistor
“ON”
and the electric current
I2
flows.
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