8
❏
3. Gently pull the driveshaft out and wipe off any old grease.
❏
4. Apply AquaCraft GrimRacer Speed Grease cable
lubricant (AQUB9500) or heavy-duty marine grade cable
grease to the driveshaft and reinsert it into the stuffi ng
box. Slowly rotate the driveshaft while gently pushing it
back into place. Be sure to leave about a 3mm [1/8"] gap
minimum between the drive dog and the stuffi ng box as
shown.
❏
5. Use the 12mm wrench to hold the fl ywheel steady
while tightening the collet assembly with the 10mm
wrench as shown. Make sure there is
still
a 3mm [1/8"] gap
between the drive dog and the stuffi ng box.
WAYS TO ENSURE LONG ENGINE LIFE.
• Keep your engine clean. Dirt will act as insulation on an
engine. It will not be able to shed heat as easily.
• Do not over-lean your engine.
• Do not run your engine at high speeds with the boat out
of the water.
•
Do not overheat the engine. This goes along with
keeping it clean and not over-leaning the engine.
•
Make sure that you use a fuel from a reputable
manufacturer that is labeled as model boat engine fuel.
• Avoid using old fuels in the engine. After running for the
day, run all of the fuel out of the engine. Use after run oil
(HCAP3000) and work it into the engine by pulling the
pull-starter 2-3 times.
• Do not use silicone sealer on the engine joints. Silicone
sealer contains acetic acid, which is corrosive if it gets
inside your engine.
•
Store your engine someplace where it will not be
subjected to extreme temperature changes.
If you are having problems with your engine, consult the
“ENGINE TROUBLESHOOTING FLOWCHART”
on page 11
of this manual. The following are some potential problems.
GLOW PLUG
The glow plug is an item that will wear out and need
replacement from time to time. It is a good idea to remove the
glow plug before your fi rst run, attach it to the glow starter
and see how well it glows. You should see a bright orange
glow from the fi lament. If a coil or two will not glow or the
plug will not glow at all, replace the plug. If the engine quits
when you remove the glow starter, the plug might need to
be changed, although this may be because you are running
too rich and need to screw in your high-speed needle some.
Look at the glow plug when you are running the engine. If
you see any bubbles coming from around the plug, replace
the glow plug (copper) gasket, or both the plug and the
gasket. The only real way to test a glow plug is to replace it.
Make sure you have a spare plug or two on hand every time
that you run the SuperVee 27 Nitro.
FUEL
Fuel can go bad. The main ingredient in model fuel is
methanol, which is basically a form of alcohol. Alcohols
absorb water out of the air, so keep your fuel jug cap on at
all times. Store your fuel out of the sunlight and in a cool
place. Bad fuel is one of the most diffi cult problems to
diagnose in engines. If you have tried everything you can
think of to remedy an engine that is not running correctly,
try using some fresh fuel.
FUEL LINE
Fuel line is susceptible to pinhole leaks. You will not be able
to see a hole in the fuel line, but if you see bubbles in the
line going to the carburetor, replace the fuel line. Another
symptom of a leak in the fuel line is a surging engine. A
properly tuned engine will surge when the air bubbles
enter the carburetor. It is basically leaning out the mixture.
