The following items are recommended for use with your XL RFS series
engine. These items are recommended for initial start-up and running.
Please read through the Operating Instructions for further details.
Fuel:
We suggest Power Master 10% 2-Stroke Blend (P/N 275180) for
break-in.
We suggest Power Master 15% 4-Stroke Blend (P/N 275200) for
normal use.
We suggest using Power Master brand fuels. Power Master fuel comes in
10% and 15% nitromethane contents that can be used in your XL RFS
series engine. Power Master fuels are blended using only high-quality
nitromethane, methanol, Castor Oil and synthetic lubricants to provide
high power output, along with easy starting and unmatched lubricating
and heat dissipation qualities. For the extra lubrication necessary for
break-in, use 10% 2-stroke blend. After break-in, for extra performance,
use 15% 4-stroke blend.
Fuel Tank:
Dubro 14oz. Fuel Tank (P/N 568543)
Dubro fuel tanks are a perfect match for your XL RFS series engine. This
size recommendation will give you about 10-15 minutes of run-time at full
throttle, and they are possibly the easiest fuel tanks to assemble and maintain.
Glow Plug:
Thunderbolt Four-Stroke Glow Plug (P/N 115490)
The Thunderbolt Four-Stroke glow plug is designed to be used in four-stroke
engines using fuels containing 10% - 15% nitro content and in any
environment. It is a "hot" type of glow plug for easy starting, excellent
transition and incredible top end. The glow plug is also very durable and
able to withstand repeated use, day after day.
Propeller:
APC 13 x 6 Propeller (P/N 609288) for XL .80RFS
APC 14 x 6 Propeller (P/N 609560) for XL .91RFS
We have found that XL RFS series engines run best using APC brand
props. They are designed to be very efficient and run quiet at high rpm’s,
and they are also durable. Use this size prop to break in your engine,
then change to the prop that best suits your application. Use the guide in
the Operating Instructions to help you find the right size propeller.
Glow Driver:
Magnum Glow Starter w/Meter (P/N 237438)
The Magnum glow starter is an excellent choice for heating the glow plug.
It uses a Sub-C NiCD, includes a meter to determine the quality of your
glow plug, and it also includes a charger to recharge the battery. It’s a
very economical product to purchase and can be used with any engine
that uses a glow plug.
Engine Mount:
Magnum Adjustable Engine Mount (P/N 279950)
The Magnum adjustable engine mount is an aluminum beam mount that
mounts to a plywood firewall in the model. It is easy to install and is
adjustable to fit different sized engines, and it comes complete with
mounting hardware.
Engine Preparation
OUR RECOMMENDATIONS
QUICK-STARTING PROCEDURES
❑
1) Mount the engine to the recommended engine mount. A strong
wood beam mount built into the airframe would also be sufficient.
❑
2) Install the muffler and exhaust pipe onto the engine using the cinch
nuts provided. The exhaust pipe can be rotated to better suit the
installation in your model. Be sure to tighten the cinch nuts securely to
prevent the muffler and exhaust pipe from loosening.
❑
3) Install the propeller to the engine using the propeller washer,
propeller nut and the safety nut provided. Tighten the nuts securely using
an adjustable wrench.
❑
4) Connect the fuel lines to the carburetor and to the muffler. Do not
connect any fuel line to the breather nipple on the bottom of the crankcase.
❑
1) Carefully turn the high speed needle valve in completely until it stops,
then turn the needle valve out 2-1/2 turns. This is the mixture setting for
initial starting. Do not adjust the low speed needle valve.
❑
2) If hand starting, prime the engine by opening the throttle barrel
completely, closing the choke valve and flipping the prop through
compression 2 -3 times. If you will be using an electric starter,
do not
prime the engine. The starter will turn the engine over fast enough to
draw fuel on its own.
❑
3) Connect the glow starter to the glow plug. Open the carburetor
barrel to about 1/4 throttle and start the engine. If you are starting the
engine by hand, you will need to vigorously flip the prop several times
before the engine will start. Once the engine begins running, immediately
turn the high speed needle valve in about a 1/4 turn to keep the engine
running.
❑
4) Advance the throttle to full while turning the high speed needle valve
in to keep the engine running. The engine should be producing a very
noticeable white exhaust from the muffler and sound like it is running rough.
Allow the engine to run for only about 5 minutes, then shut the engine off.
❑
5) Now that you have started your engine, it must be properly broken
in. Proper break-in will seat all of the moving parts, particularly the piston
ring, sleeve and valve assemblies. This procedure takes about 45
minutes of run-time and is highly recommended. An engine that is properly
broken in will produce more power, be more user-friendly and last much
longer than an engine that does not receive a break-in period. For this
reason we highly recommend following the break-in procedure detailed
in the Operating Instructions before you run the engine further.
Engine Starting
XL .80RFS & XL .91RFS SERIES
AIRCRAFT ENGINE QUICK-START
AND TROUBLESHOOTING GUIDE
The following information is provided to get your new Magnum XL RFS
series engine running right away with minimal effort. We have listed
our recommendations for fuel, propeller, starting procedures and
other recommended accessories. Also included is general information
about the accessories needed for the engine that we hope you will
find helpful.
This Quick-Start Guide should not be used as a replacement for the
Operating Instructions included; rather, it should be used along with
the Operating Instructions. We highly recommend reading through
the Operating Instructions to familiarize yourself with each part of the
engine, along with the proper procedures for engine break-in and tuning.
