Instruction manual

17
ENGINE/ALTERNATOR
REPLACEMENT INFORMATION
With the exception of the AC Only alternator, all of
the alternator systems referred to in this book have
a battery as part of the electrical system.
There are specialized applications that use an
alternator without a battery. An example would be
certain generators or welders that use alternator
to function, the alternator output must be very
evenly matched to the equipment requirements.
When replacing an engine in these applications, the
alternator must be the same as the original.
REPLACING BRIGGS & STRATTON
ENGINES
When replacing an older Briggs & Stratton engine
on a piece of equipment with a newer Briggs &
Stratton engine, sometimes the newer engine has
an alternator system different from the alternator
system on the original engine. This means that the
output connector on the replacement engine is not
compatible with the original wiring harness on the
piece of equipment. For example, the original engine
may have been equipped with a Dual Circuit system
and the replacement engine is equipped with a
regulated system. We can integrate the two systems
by making an adapter harness from readily available
parts.
Generally an unregulated DC system (DC Only, Dual
Circuit) should not be used to replace a regulated
system because alternator output may not be
because the equipment requirements are usually
much less on an unregulated DC system, a
regulated system may be used as a replacement.
being over charged.
ÒÑÌÛæ The AC Only, DC Only, Dual Circuit, Tri-
Circuit as well as the 5 and 10 amp
alternator magnets. The 9 and 16 amp
for magnet sizes.
ßÔÌÛÎÒßÌÑÎ
ÓßÙÒÛÌÍ
*Small Magnet 7/8" x 11/16"
(22mm x 18mm)
*Large Magnet 1-1/16" x 15/16"
(27mm x 24mm)
*V Twin Alternator Magnet S ize: Small 7/8" x 21/32" (22 mm x 17 mm )
Large 7/8" x 29/32" (22 mm x 23 mm )