Kohler KT19 series II User Manual

White Chalky Deposits: Overheating will be indi-
cated by chalk white colored deposits, not burned black
as might be expected. This condition is also usually
accompanied by excessive gap erosion. Overadvanced
timing, lean carburetion, clogged air intake and blocked
cooling fins are some of the causes of overheating.
If abnormal conditions are indicated, also check
the number on the plug - it may be of the wrong
heat range for the engine. If the center electrode is
eroded round, don't try to square it with a file for
reuse.
BREAKER POINTS
Engine operation is greatly affected by breaker
point condition and adjustment. If points are
burned or badly oxidized, little or no current will
pass. As a result, the engine may not operate at all
or if it does run, it is likely to misfire particularly at
full throttle.
Breaker point gap affects the time that the contacts
are opened and closed. If too wide, the ignition
spark will be advanced and the engine may knock
or kick back during starting. If too close, the
ignition spark will be retarded and the engine will
lose power
and overheat.
When installing or servicing breaker points, extra
care should be taken to keep contacts clean. To
remove foreign materials or oil from new points, or
to clean existing points after servicing or readjust-
ing, insert a piece of heavy paper or light card-
board between the closed points and draw it
between the points. To prevent lint or fibers from
remaining on the points, open the breaker points to
withdraw the paper.
SECTION 6
ELECTRICAL SYSTEMS AND COMPONENTS
31
CONDENSER
If the condenser shorts out, the coil will be unable
to produce output voltage. On the other hand, if it
opens or decreases in capacitance, the ignition
points will burn excessively. If badly burned
breaker points occur too frequently, the condenser
should be checked.
If capacitance of condenser is too low, metal will
transfer from the stationary contact to the mov-
able contact. If capacitance is too high, metal will
build up on stationary contact. See Figure 6-2.
"Build-Up" on
Movable Contact
Could Indicate
Insufficient Capacitance
"Build-Up" on
Stationary
Contact
Could Indicate
Excess Capacitance
Figure 6-2. Metal Transfer On Points
Condenser Check
The condenser can also be tested with an ohm-
meter as follows: Discharge the condenser by
grounding the condenser lead, then set ohmmeter
on the RxlO,OOO scale and connect the meter leads
between condenser lead and condenser case. On a
good
condenser the indicator on the meter should
bounce up into the scale and then fall back to
infinity. On a faulty condenser the needle will
either not fall back to infinity (indicating a short)
or will not move at all when the test is performed
(indicating an open circuit). This test is not fool
proof as the condenser could be intermittent and
actually appear good when it is faulty. When using
a commercial condenser tester, follow the instruc-
tions provided by the manufacturer.

Kohler KT19 series II Specifications

General

Brand	Kohler
Model	KT19 series II
Category	Engine
Language	English