Hudy Ultimate Break-In Bench User manual

BREAK-IN BENCH
FOR ALL 1/8 & 1/10 NITRO ENGINES
INSTRUCTION MANUAL

2
CONTENTS
INTRODUCTION............................................................2
SAFETY FIRST.............................................................3
EXPLODED VIEW.........................................................4
EQUIPMENT REQUIRED FOR OPERATION.......................5
FACTORY PRE-ASSEMBLED..........................................7
ASSEMBLY..................................................................8
PREPARATION............................................................11
STARTING THE ENGINE...............................................13
BREAK-IN PROCESS...................................................15
TROUBLESHOOTING...................................................17
WARRANTY................................................................18
HUDY Engine Break-In Bench
The HUDY Engine Break-In Bench is the ultimate tool for
easy, safe, and professional break-in of your .12/.15/.21ci
engine (with 5mm extended crankshaft). It allows for a
controlled break-in process that reduces wear & tear
on engine components, ensuring increased performance,
reliability, and longevity.
Constructed of top-quality components of tough aluminium
and spring steel, the Engine Break-In Bench comes partially
assembled from the factory to get you running sooner.
The heavy-duty aluminum base plate with integrated
clamps provides quick, solid mounting on any workbench,
and a large protective shroud safely covers the spinning
propeller. Other features include a large-capacity 125cc
fuel tank, pre-assembled throttle linkage, universal engine
mounts, and special propeller.
Break in your engine like the pros!

3
SAFETY FIRST
The HUDY Engine Break-In Bench is NOT A TOY, it is a
precision-manufactured hardware tool; if used improperly
it can injure you or others nearby and/or cause damage to
property or your nitro engine. It is very important to pay
attention as indicated in this manual. Improper use of the
tool can be very dangerous.
You alone are responsible for operating this tool and your
nitro engine safely; act with discretion and pay special
attention at all times.
• Carefully read and fully understand the safety instructions
and engine operation instructions before you operate this
tool or your engine.
• Keep these manuals in a place so you know where they
are at all times.
• Follow the instructions carefully.
        
       

• Wear safety glasses, ear protectors, and gloves.
• DO NOT wear a necktie, loose sleeves, or other loose
clothes while using the unit. In case of long hair, wear
your hair under a hat.
• Before starting the engine, always check that the engine
is securely mounted.
• Keep clear of the propeller safety cover; never stick your
ngers or anything else through the safety cover.
• Use the unit outside or in a well-ventilated room.
• When running the engine indoor, make sure the exhaust
gasses are directed to outdoors. Stay away from the
exhaust gasses at all times.
• Start the engine only using the spinner driver and an
electric starting device (such as an electric drill).
• Avoid making engine adjustments while the engine is
running.
• Stop the engine by pinching the fuel line.
• Avoid touching the cylinder head or the exhaust pipe as
this may cause serious burns.

4
EXPLODED VIEW
104162
104160
358602
104166
104169
104164
356200
104168
358680
104142

5
EQUIPMENT REQUIRED FOR OPERATION

The HUDY Engine Break-In Bench
is designed for use with all
.12/.15/.21ci nitro engines with
a 5mm extended crankshaft. The
tapered crankshaft cone that
was included with the engine
must be used.

When breaking in your engine, we
strongly recommend using the
same fuel that you plan to run in
your engine after break-in.

Normally, you should always run
your engine with an air lter.
However, an air lter is not
used during the break-in
process on the HUDY Engine
Break-In Bench.

Use a compatible, high-quality
exhaust system when breaking
in your engine. Be sure to use
all gaskets, springs, and other
required mounting hardware.

A glowplug starter is required
to ignite the glowplug for
starting. We recommend
using a high-quality, battery-
operated glowplug starter from
a reputable manufacturer.

A glowplug wrench is required
for removing/installing the
engine glowplug. We recommend
using a high-quality glowplug
wrench such as the #107581
HUDY Wrench-Glowplug /
Clutchnut.

6

A high-quality screwdriver
is required for adjusting the
carburetor. We recommend
using high-quality tools such as
those offered by HUDY.

High-quality Allen wrenches
(2.0mm and 2.5mm) are
required for assembling and
adjusting the HUDY Engine
Break-In Bench. We recommend
using high-quality tools such as
those offered by HUDY.

A crankshaft or piston locking
tool is strongly recommended
for preventing the crankshaft
from turning while installing and
tightening the propeller and
spinner. We recommend using
a locking tool from a reputable
manufacturer.

A 17mm wrench is required for
tightening the spinner on the
crankshaft. We recommend
using tools from reputable
manufacturers.

An electric drill is required to
spin the crankshaft to start
the engine. We recommend
using tools from reputable
manufacturers.

A temperature gauge is
useful to check the engine
temperature during the break-in
period.

7

A hairdryer or heat gun is
recommended to pre-heat the
engine prior to initial starting.

Self-adhesive foil tape is
recommended to cover the
engine head ns to prevent
overcooling during break-in.
FACTORY PRE-ASSEMBLED
The HUDY Engine Break-in Bench is pre-assembled at the
factory with the exception of the fuel tank and stands,
which must be installed before use. Attach the two plastic
support stands to the base plate using the included
at-head screws, then attach the fuel tank to the stands
using the two button head screws and rubber grommets.

A pair of pliers is required to
connect the throttle control
rod ball-joint to the carburetor.
We recommend using a pair
of needle-nose pliers from a
reputable manufacturer.

8
ASSEMBLY

1. Use a crankshaft or piston locking tool to prevent the
crankshaft from rotating. This may require the removal
of the crankcase rear plate or glowplug, respectively.
2. Slide the tapered ywheel cone onto the crankshaft.
3. Slide the propeller support plate onto the crankshaft.
The small raised ridge on the support plate goes
TOWARD the engine.
NOTE
ORIENTATION
NOTE
ORIENTATION
4. Slide the propeller onto the crankshaft. The smooth
edge of the propeller goes AWAY from the engine.

1. Remove the engine mounts from the base plate.
2. Attach the engine mounts to the engine using the
supplied M3x12 screws.

9
5. Thread the spinner onto the crankshaft, and tighten
with a 17mm wrench until tight.
6. Remove the crankshaft or piston locking tool (if used),
and replace the crankcase rear cover or glowplug
as appropriate.
7. Rotate the propeller to ensure it does not touch hit
the carb. If it touches the carb, remove the propeller,
add a shim behind the tapered cone, then re-install the
propeller.

1. Re-attach the engine mounts to the base plate, and
align the engine so the spinner is centered in the safety
cover. Tighten the bottom engine mount screws.the
engine position if necessary.
2. Attach the throttle control ball-joint to the carburetor.

10
3. Attach the exhaust pipe header to the engine exhaust
outlet; remember to use the proper gasket and springs.
Attach the pipe to the exhaust mounting wire and
tighten the setscrew securely.
4. Use a length of silicone fuel tubing to connect the fuel
tank to the carburetor inlet.
5. Use a length of silicone fuel tubing to connect the
exhaust pipe pressure tting to the fuel tank cap
pressure tting.