Fuji Imvac BT-43EIS Operator's Manual

Fuji Imvac BT-43EIS Operator's Manual

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SPECIFICATIONS
Displacement:
Horsepower:
Ignition Style:
RPM:
Fuel:
Weight:
Worldwide Distributor
·
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. Use the high-grip prop washer behind the prop.
·
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, especially 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-43EIS
43cc [2.6ci]
4.2HP / 11,000 rpm
Electronic Ignition
1,200 – 11,000 rpm
Mixed Gasoline
Approximately 1820g
w/Muffler [3.5lb]
Manufactured by FUJI IMVAC INC.
YOKOHAMA, 235-0005 JAPAN
Champaign, IL 61826 USA
www.fujiengines.com
SAFETY TIPS AND WARNINGS
: Hobbico, Inc.
(except Japan)

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Summary of Contents for Fuji Imvac BT-43EIS

  • Page 1 ™ Operator’s Manual for BT-43EIS SPECIFICATIONS Displacement: 43cc [2.6ci] Horsepower: 4.2HP / 11,000 rpm Ignition Style: Electronic Ignition RPM: 1,200 – 11,000 rpm Fuel: Mixed Gasoline Weight: Approximately 1820g w/Muffler [3.5lb] Manufactured by FUJI IMVAC INC. YOKOHAMA, 235-0005 JAPAN Worldwide Distributor : Hobbico, Inc.
  • Page 2: Parts List

    · Do not use silicone fuel line because it will be attacked by the fuel. Use vinyl or neoprene rubber fuel line. · Always secure the fuel line away from the cylinder head. The engine’s heat can damage the fuel line. ·...
  • Page 3: Spark Plug

    20" x 8", 18" x 10", 22" x 6" High Performance Wood or Composite Prop During our tests, our Fuji BT-43EIS turned an APC 20" x 8" composite prop at 8000 rpm which translates to roughly 23 lb of static thrust.The engine was new with 60 minutes of breaking in.
  • Page 4: Prepare The Engine

    Fuji Engines has developed a special oil to work with the Fuji engines. This oil is of extremely high quality and it has exceptional lubricating properties. A 50cc (1.7 oz) bottle of Fuji oil is supplied with this engine for you to try. This oil can be mixed with gasoline at much higher ratios than other engine oils which allows the engine to develop more horsepower and last longer.
  • Page 5 Use triangle stock and pin the firewall with hardwood dowels to reinforce the firewall glue joints. Never install the Fuji BT-43EIS onto a firewall thinner than specified because it may fail due to the power of the engine.
  • Page 6: Break In The Engine

    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 BT-43EIS while flying your airplane. Just make sure you observe all recommendations above. STARTING PROCEDURES There are two recommended ways to start the Fuji BT-43EIS: A.
  • Page 7 2. Have someone help you hold the airplane while you start the engine. 3. Make sure the ignition is OFF, close the choke on the carburetor and open the throttle slightly from the idle position. 4. Rotate the propeller slowly about 4 to 8 times (more in winter) until fuel begins to be drawn into the carburetor.
  • Page 8: Engine Adjustments

    ENGINE ADJUSTMENTS · Always make high- and low-speed needle adjustments with the engine shut off. Also make sure the ignition is OFF. · Adjust the needle marked “H” for high-speed RPM. Adjust the needle marked “L” for low-speed RPM. A. Normal high- and low-speed needle settings: It is not necessary to change the needle settings if the engine runs smoothly.
  • Page 9 Problem: The idle is not steady. Solution: Your low-speed needle “L” valve is too rich. Close it 1/8 of a turn and try again. 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”...
  • Page 10: Replacement Parts

    REPLACEMENT PARTS To order replacement parts for the Fuji BT-43EIS, use the order numbers in the Replacement Parts Lists that follow. Replacement parts are available only as listed. Replacement parts are not available from Product Support, but can be purchased from hobby shops or mail order/Internet order firms. If you need assistance locating a dealer to purchase parts, visit www.greatplanes.com and...
  • Page 11 ENGINE PARTS LIST Key # Part No. Description 40..FJIG8340 ......Hex Bolt 5x50 8...FJIG7470 ....Spark Plug RCJ-6Y 45..FJIG3295......Carburetor Set 11..FJIG4400......Cylinder Set 46..FJIG7640 ......Velocity Stack 12..FJIG8290 .......Hex Bolt 5x18/S 47..FJIG8255....Hex Button Screw 5x12 13..FJIG3820 .......Connecting Rod 51..FJIG5680 ......Rotor Complete 14..FJIG4350......Cylinder Gasket 52..FJIG8770 ......Washer 7mm 15..FJIG6660 .......Piston Ring 54..FJIG4740 ....Flywheel Nut 12mm 16..FJIG6690 .........Piston Set...
  • Page 12: Optional Accessories

    MUFFLER AND ACCESSORIES PARTS LIST Key # Part No. Description 20 ..FJIG4920 .....Hex Wrench 4mm 1 ..FJIG1001 .......Control Unit 21 ..FJIG7679 ..Propeller Hub 32.5mm 2 ..FJIG8360..Propeller Fixing Bolt 22 ..FJIG6840 ...Propeller Washer B 3 ..FJIG8300 ....Hex Bolt 5x20/S 30 ..FJIG6020......Muffler Set 4 ..FJIG8680...Small Washer 8mm 31 ..FJIG5900....Muffler Gasket 5 ..FJIG3690..Box Wrench 10x19mm...
  • Page 13: Engine Measurements

    ENGINE MEASUREMENTS 100.49mm 72.86mm 45mm R25.5mm 90mm 104mm 124mm 88mm 157mm 32.5mm 171mm...
  • Page 14 OTHER ENGINES AVAILABLE FROM FUJI: BT-50EIS Engine Displacement: 46.5cc Total RPM Range: 1200-10,000 FJIG0087 Output: 5.2 hp @ 10,000 rpm Weight w/Muffler: 4.5 lb (2.04kg) Includes: Walbro Butterfly Carburetor, Champion RCJ6Y Spark Plug, Muffler Recommended Props: 21x10 Carbon @ 7000 RPM; 20x10 Wood @ 7000 RPM;...
  • Page 16 Engine Mount Template for Fuji BT-43EIS 5mm [10-32] Engine Bolt Holes Entire Contents © Copyright 2005 FJIZ1200 for FJIG0143 V1.0...

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