To eliminate unnecessary work, careful reading of the applicable section is recommended before starting to
service a bumper boat. Photographs, diagrams, notes, cautions, warnings, and detailed descriptions have
been included wherever necessary. Nevertheless, even a detailed account has limitations; a certain amount of
basic knowledge is also required for successful work.
Especially note the following:
DIRT
Before removal and disassembly, clean the bumper boat. Any dirt entering the engine or other parts will work
as an abrasive and shorten the life of these parts. For the same reason, before installing a new part, clean o
ff
any dust or metal
fi
lings.
TIGHTENING SEQUENCE
Generally, when installing a part with several bolts, nuts or screws, start them all in their appropriate holes
and tighten them to a snug
fi
t, then tighten them evenly in a cross pattern. This action will avoid distortion
of the part. Conversely, when loosening the bolts, nuts or screws, loosen each by a quarter turn, and then
remove in a similar cross pattern. Where there is a tightening sequence indication in this Service Manual, the
bolts, nuts or screws must be tightened in the order and method indicated.
TORQUE
When torque values are given in this Service Manual, use them. Either too little or too much torque may lead
to serious damage. Use a good quality, reliable torque wrench.
FORCE
Common sense should dictate how much force is necessary in assembly and disassembly. If a part seems
especially di
ffi
cult to remove or install, stop and examine what may be causing the problem. Whenever tapping
is necessary, tap lightly using a wooden or plastic-faced mallet. Use an impact driver for screws (particularly
for the removal of screws held by a locking agent) in order to avoid damaging the screw heads. It also may be
necessary to apply heat to some parts that are held with a locking compound.
EDGES
Watch for sharp edges, especially during major motor/engine disassembly and assembly. Protect your hands
with gloves or a piece of thick cloth when lifting the motor/engine or turning it over.
HIGH-FLASH-POINT SOLVENT
A high-
fl
ash-point solvent is recommended to reduce
fi
re danger. A commercial solvent commonly available
in North America is “standard solvent” (generic name). Always follow manufacturer and container directions
regarding the use of any solvent.
GASKET, O-RING
Do not reuse a gasket or O-ring once it has been in service. The mating surfaces around the gasket must be
free of foreign matter and perfectly smooth.
LIQUID GASKET, NON-PERMANENT LOCKING AGENT
Follow manufacturers’ directions for cleaning and preparing surfaces where these compounds will be used.
Apply sparingly, as excessive amounts may cause serious damage. An example of a non-permanent locking
agent commonly available in North America is Loctite® Lock’n Seal (Blue).
PRESS
A part installed using a press or driver, such as a wheel bearing, should
fi
rst be coated with oil on its outer or
inner circumference so that it will go into place smoothly.
OIL SEAL AND GREASE SEAL
Replace any oil or grease seals that were removed with new parts, since removal generally damages seals.
When pressing in a seal containing manufacturer’s marks, press it in with the marks facing out. Seals should
be pressed into place using a suitable driver (which contacts evenly with the side of the seal) until the face of
the seal is even with the end of the hole. Always use assembly oil or grease on the lip (sealing edge) of any seal
prior to assembly.
