Fuji Imvac BT-64A Operator's Manual

Fuji Imvac BT-64A Operator's Manual

Engine airplaner fuji imvac bt-64a

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·
Always use a balanced spinner and a balanced prop. An unbalanced spinner
and prop combination will cause high levels of vibration and may cause the
propeller shaft to break.
·
Always use a lightweight spinner on your engine. Lightweight spinners are
considered to be those with a cone wall of 1mm or less. Heavy spinners could
cause the propeller shaft to break.
·
Securely tighten the spinner and prop on the engine to prevent it from being
thrown off the engine while running.
·
Never use a prop that has hit the ground. Even though it may look good from
the outside, it may be cracked on the inside which may cause it to disintegrate
while in use. Do not use a nicked, cracked or split propeller.
·
Keep foreign objects away from the propeller. Make sure that nothing can be
"sucked in" by the propeller. Never start the engine on loose gravel or sand.
·
Keep onlookers away from the running engine, specially small children.
·
Do not attempt to stop the engine by throwing anything into the path of the propeller.
·
Make sure the fuel line is well-secured to the engine and to the fuel tank so that
it won't come off in flight.
Operator's Manual for BT-64A
Displacement:
Horsepower:
Ignition Style:
RPM:
Fuel:
Weight w/muffler: 5.0 lbs [2.2kg]
Manufactured by FUJI-IMVAC INC.
YOKOHAMA, 235-0005 JAPAN
(except Japan)
Champaign, IL 61826 USA
www.fuji-imvac.com
SAFETY TIPS AND WARNINGS
SPECIFICATIONS
Fuji-Imvac is not related to the original Fuji Engines sold by Mecoa.
: Hobbico, Inc.
3.85 cu in [63.1cc]
5.7hp @ 9,000rpm
CDI Automatic Timing
Module
1,200 – 9,000rpm
Gas/2-cycle engine oil

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Summary of Contents for Fuji Imvac BT-64A

  • Page 1 ™ Operator’s Manual for BT-64A SPECIFICATIONS Displacement: 3.85 cu in [63.1cc] Horsepower: 5.7hp @ 9,000rpm Ignition Style: CDI Automatic Timing ™ Module RPM: 1,200 – 9,000rpm Fuel: Gas/2-cycle engine oil Weight w/muffler: 5.0 lbs [2.2kg] Fuji-Imvac is not related to the original Fuji Engines sold by Mecoa.
  • Page 2: Preparing The Engine

    AUTOMATIC IGNITION TIMING MODULE The BT-64A engine ignition system is a combination of an electronic system and a mechanical system. The working principle for the automatic ignition timing module is that it gradually advances the ignition timing as the ignition pulses increase with increasing engine rpm.
  • Page 3: Spark Plug

    22" x 10" High Performance Wood Prop 22" x 10" or 22" x 12" Carbon Prop During our tests, our Fuji-Imvac BT-64A turned a Bolly 22" x 12" carbon prop at 7100 rpm. The engine was new with 60 minutes of breaking in. The test conditions were: Temperature 59°F [15°C], Humidity 20%, elevation at sea level.
  • Page 4: Before Operation

    Make sure that the engine has adequate cooling. While breaking in, the engine may run at slightly higher temperatures. · If you wish to do so, you can break in your Fuji-Imvac BT-64A while flying your airplane. Just make sure you observe all recommendations above. RUNNING THE BT-64A ON YOUR AIRPLANE.
  • Page 5: Starting Procedures

    STARTING PROCEDURES There are four recommended ways to start the Fuji-Imvac BT-64A: A. Manual Starting: Note: Use a thick glove to protect your hand while hand starting the Fuji-Imvac BT-64A. Propeller Rotation Magnet Position of the 20˚ Pick Up magnets before flipping the propeller when hand starting the engine.
  • Page 6: Engine Adjustments

    B. Electric Starter Use: 1. Make sure you use a good quality, lightweight aluminum spinner. 2. Have someone help you hold the airplane while you start it. 3. Make sure the ignition is OFF, close the choke plate on the carburetor and open the throttle slightly from the idle position.
  • Page 7 A. Normal high- and low-speed needle settings: It is not necessary to change the needle settings if the engine runs smoothly. Normally only the “H” needle will need adjustment from time to time and only by a small amount. H: Open the needle 3/4 of a turn from the closed position (±1/4 of a turn in winter). L: Open the needle 1-3/8 turns from the closed position (±1/4 of a turn in winter).
  • Page 8 C. High-Speed Adjustment: The high-speed rpm and transition performance is adjusted with the high-speed “H” needle valve. When adjusting, turn the screw about 1/8 of a turn each time. The position of the “H” needle will vary according to air temperature and field elevation.
  • Page 9 REPLACEMENT PARTS LIST (ENGINE) Key # Part No. Description Key # Part No. Description 1...FJIG3060 ......Ball Bearing 29..FJIG6640 ......Piston Ring 2...FJIG3150 ....Carburetor Gasket 30..FJIG6870 ......Prop Flange B 3...FJIG3220 ......Carb Insulator 31..FJIG6900 ......Pulse Fitting 4...FJIG3390 ......Clip (5.5mm) 32A ..FJIG7320 ......Shim (0.1mm) 5...FJIG3460 ......Coil Mount Plate 32B ..FJIG7350 ......Shim (0.2mm)
  • Page 10: Optional Accessories

    REPLACEMENT PARTS LIST (CARBURETOR) Key # Part No. Description Key # Part No. Description FJIG3280 ....... Carburetor K ..FJIG5460 ......Inlet Screen A ..FJIG3000 ......Adjust Spring L ..FJIG5670 ....Low Adjust Screw B ..FJIG3750 ......Control Lever M ..FJIG5790 ....Metering Diaphragm C ..FJIG4590 ....
  • Page 12 Engine Mount Template for Fuji-Imvac BT-64A Engine Entire Contents © Copyright 2009 FJIZ1164 for FJIG0064 V2...

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