HUSTLER FasTrak SDX, Общее руководство по обслуживанию, Страница: 25 / 45

121878 5-3 REV C
Overservicing
Overservicing occurs when an air filter element is removed
for cleaning or replacement before it is necessary. Each time
the filter is removed a small amount of dirt and dust could
fall in the intake system. This accumulated dirt can cause a
dusted engine. It only takes a few grams of ingested dirt over
the normal service life of an engine to cause a dusted engine.
Do not clean the element, but replace with a new element
only. Cleaning used air filter elements, through improper
cleaning procedures, can get dust on the inside of the filter
causing dirt ingestion and engine failure.
It is important to note that whenever an air filter element is
cleaned by any method, the person or company performing
the cleaning assumes responsibility for the integrity of the
filter from then on.
The warranty for air filters expires upon
cleaning or servicing in any manner because the condition of
the filter after servicing is completely out of the filter
manufacturer’s control. Therefore, on a dust ingested engine
failure, there will be no warranty consideration if the air filter
element has been cleaned or serviced in any manner.
A partially dirty air filter element works better than a new
element. Therefore, a dirty filter element is not bad for the
engine unless it is excessively restricting the air flow and
engine performance is affected. The reason is simple. The
media in the filter must be porous to allow air to pass
through it. When dirty air passes through the filter, the dirt
plugs some of the holes in the media and actually acts as
part of the filter media. When the next round of dirt enters,
the first dirt helps filter out even smaller particles making the
filter more efficient at stopping dirt from entering the engine.
This is referred to as barrier filtration.
Of course, at some point the filter media becomes too
clogged to allow air to pass.
The mowing conditions will determine the frequency of air
filter element changing.
Carbon Canister
FasTrak
®
SDX mowers, that are put into operation in
California, have a carbon canister incorporated into the fuel
system. Figure 5-9
Kohler engine shown
A. Safety filter
Figure 5-6
Kawasaki engine shown
A. Air cleaner canister
B. Dust cap
C. Clamp
Figure 5-7
A
A
B
C
Kohler engine shown
A. Air cleaner canister
B. Dust cap
C. Clamp
Figure 5-8
A
B
C