Troubleshooting; Chapter Two - Arctic Cat Cougar Service Manual

Chapter Two
Troubleshooting
Diagnosing mechanical problems is relatively
simple if you use orderly procedures and keep a
few basic principles in mind. The first step in any
troubleshooting procedure is to define the symp-
toms as closely as possible and then localize the
problem. Subsequent steps involve testing and
analyzing those areas which could cause the
symptoms. A haphazard approach may eventu-
ally solve the problem, but it can be very costly
in terms of wasted time and unnecessary parts
replacements.
Proper lubrication, maintenance and periodic
tune-ups as described in Chapter Three will re-
duce the necessity for troubleshooting. Even
with the best of care, however, all snowmobiles
are prone to problems which will require trou-
bleshooting.
Never assume anything. Do not overlook the
obvious. If the engine will not start, check the
position of the emergency cut-out switch and the
tether switch. Is the engine flooded with fuel
from using the primer too much?
If the engine suddenly quits, check the easiest,
most accessible problem first. Is there gasoline
in the tank? Has a spark plug wire broken or
fallen off?
If nothing obvious turns up in a quick check,
look a little further. Learning to recognize and
describe symptoms will make repairs easier for
you or a mechanic at the shop. Describe prob-
lems accurately and fully.
Gather as many symptoms as possible to aid
in diagnosis. For instance, note whether the en-
gine lost power gradually or all at once. If smoke
comes out of the exhaust pipe, note the color of
the smoke. After the symptoms are defined, areas
which could cause problems can be tested and
analyzed. Guessing at the cause of a problem
may provide the solution, but it usually leads to
frustration, wasted time and a series of expen-
sive, unnecessary parts replacements.
You do not need fancy equipment or compli-
cated test gear to determine whether you should
attempt repairs at home. A few simple checks
could save a large repair bill and lost time while
your snowmobile sits in a dealer's service depart-
ment. On the other hand, be realistic and do not
attempt repairs that are beyond your abilities.