THOR 45 PETROL ENGINE REPLACEMENT PARTS LIST
THR45-0110
Crankcase - Front
THR45-0170
Bearings - Crankshaft
THR45-0360
Carburettor Assembly
THR45-0370
Crankcase Pressure Tube
THR45-0160
Crankshaft w/Connecting Rod
THR45-0190
Prop Mount Assembly
THR45-0310
Sensor
THR45-0150
Crankcase Gasket
THR45-0340
Carburettor Gasket - Outer (2)
THR45-0040
Cylinder Base Gasket
THR45-0330
Carburettor Gasket - Inner
THR45-0410
Silencer Gasket
THR45-0120
Crankcase - Rear
THR45-0010
CDI Ignition Module
THR45-0020
Spark Plug
THR45-0030
Cylinder
Global Services
18480 Bandilier Circle
Fountain Valley, CA 92708
Phone: (714) 963-0329
Fax: (714) 964-6236
Email: [email protected]
Ripmax Ltd.
241 Green Street,
Enfield, U.K. EN3 7SJ
Phone: (0) 20 8282-7500
Fax: (0) 20 8282-7501
Email: [email protected]
In North America:
In Europe:
TO ORDER REPLACEMENT PARTS, PLEASE VISIT YOUR LOCAL THOR
PETROL ENGINE DEALER FIRST. IF YOUR LOCAL DEALER DOES NOT
STOCK THOR PETROL ENGINE PARTS, PLEASE CONTACT THE LOCAL
THOR PETROL ENGINE DISTRIBUTOR SHOWN HERE.
THR45-0380
Flat Standard Silencer
THR45-0210
Crankshaft Retaining Nut
THR45-0180
Crankshaft Seal
THR45-0200
Woodruff Key
Continued on Back Page
4
IMPORTANT
During the running-in procedure, DO NOT run the engine
at full power for more than 10 seconds. This will ensure that the engine
does not overheat. Since you're running the engine on a test stand there
is much less cooling air flowing over the engine than if the engine was in a
model that was flying.
The running-in process allows the engine parts to perfectly fit each other and
properly protect each part from premature wear. We suggest that you start
the running-in process with the engine on a test stand for approximately 1
hour, then mount the engine into your model and fly. Running-in in the engine
is a simple process. Follow the suggestions below:
Use a fuel/oil mixture ration of 25:1 for the running-in process. The extra oil will
aid in the running-in process and help prevent overheating and premature wear.
This fuel mixture ratio should be used for the first 2-3 hours of runtime.
Use a smaller diameter propeller than you would normally use. We recommend
a 20 x 8. The smaller propeller will not load the engine as much.
Start the engine and allow the engine to idle for no less than 1 minute to
allow it to adquately warm up. After 1 minute slowly advance the throttle to
approximately half throttle and allow the engine run for 5 minutes, then bring
the engine back down to idle.
Continue to run the engine at varying throttle settings for approximately 1
hour, being conscious not to run the engine at full throttle for more than 10
seconds. Allow the engine a cool down period every 15 minutes or so. After 1
hour, the engine can be installed into your model and flown.
RUNNING-IN PROCEDURE
RUNNING THE ENGINE
IMPORTANT
Be aware that when the engine is new, it wil not produce
the rpm and power that a well used engine will. Expect rpm's to increase as
you run the engine more and more. The engine will require about 12 - 20
hours of run-time before it will produce its full power potential.
VERY IMPORTANT
Be careful never to lean the engine out too much.
Remember that the lubricants for your engine are suspended in the fuel. If
you lean out the fuel mixture too much you will also be lowering the amount
of lubricant entering your engine. Less lubricant means more chance of your
engine overheating and possible engine failure.
When you make adjustments to the carburettor, you must shut off the
engine using the kill switch.
You should use a 25:1 fuel/oil mixture ratio for the first 2-3 hours of runtime.
After that, you can use a 40:1 fuel/oil mixture ratio.
Mount the engine into your model. Start the engine and allow it to idle for
about 1 minute to allow it to adquately warm up. After 1 minute, advance the
throttle to full. Using a tachometer, adjust the high speed mixture screw for
full power, then turn the high speed mixture screw counterclockwise about 5°
to richen the mixture slightly. This is the setting at which you should fly the
model.
Bring the throttle down to idle and allow the engine to idle for 30 seconds.
After 30 seconds, advance the throttle to full. The engine should transition
from idle to full power smoothly and quickly. If the engine quits suddenly, the
low speed mixture is too lean. Turn the low speed mixture screw coun-
terclockwise 5° to richen the idle mixture. If the engine splutters and quits, the
low speed mixture is too rich. Turn the low speed mixture screw 5° clockwise
to lean the mixture. Start the engine and check the transition again. If it's still
not correct, repeat this procedure until you're satisfied with the transition.
Unlike a glow engine, these needles require very little movement to change
the mixture.
Problem:
The engine is flooded.
Solution:
Remove the spark plug and turn the engine upside down to
drain any excess fuel from the engine. Dry off spark plug electrode and
reinstall the spark plug.
Problem:
The engine starts after being choked, but stops shortly after.
Solution:
The low speed mixture is probably too lean. Readjust the low speed
mixture screw to 1.5 turns out from fully closed and readjust from there. This
problem can also be caused by a dirty carburettor or faulty ignition.
Problem:
The engine runs rough and vibrates excessively
Solution:
Balance the propeller and spinner, and check to ensure that
the propeller bolts are tight. Check the spark plug for excess carbon build
up and the proper gap setting. Replace the spark plug and/or reset the
gap. Check to ensure that the engine mounting bolts are tight. Check for
over-rich mixtures.
Problem:
The engine doesn't reach normal RPM at full throttle.
Solution:
Check the carburettor mixture settings. Check that you are not
using a propeller larger than recommended. Check that the engine is not
overheating and that you are using the recommended fuel/oil mixture ratio.
Check the spark plug for excessive carbon build up or other defects.
In North America:
In Europe:
For warranty and technical support, please contact your local distributor:
Global Services
18480 Bandilier Circle
Fountain Valley, CA 92708
Phone: (714) 963-0329
Fax: (714) 964-6236
Email: [email protected]
The THOR 45 CDI Petrol Engine is distributed exclusively in North America by Global
Hobby Distributors and in Europe by Ripmax Ltd.
All contents copyright © 2005/7 Global Hobby Distributors Version 1.2 January 2007
Avoid running the engine under dusty conditions or where there are loose
rocks or sand.
Wipe the outside of the engine dry using a soft cloth.
Use a fuel filter between the fuel tank and the carburettor.
Periodically check to make sure all of the engine bolts are tight, including
the engine mounting bolts.
Periodically check to make sure that the timing sensor and ignition cable are
not chaffed or otherwise damaged.
Periodically check the condition and gap of the spark plug, especially when
a noticeable drop in performance is seen. If the spark plug electrode is dam-
aged or worn, replace the spark plug.
Periodically check the condition of the spark plug cap and the grounding
cable. The boot should be soft and pliable, and not show any signs of crack-
ing or other damage.
MAINTENANCE
SERVICE INFORMATION
Ripmax Ltd.
241 Green Street,
Enfield, U.K. EN3 7SJ
Phone: (0)20 8282-7500
Fax: (0)20 8282-7501
Email: [email protected]
TROUBLESHOOTING
