4-Stroke Engines

When you combine quality Fuji-Imvac engine technology with the performance advantages of a 4-stroke, you've got a sure-fire power plant for scale pilots!

Four-stroke engines boast these advantages:

• Incredible fuel economy — less than half the fuel consumption of a comparable 2-stroke engine, for twice the flight time per fill at half the cost.
• Amazingly quiet operation — making them welcome even at the most noise-sensitive flying fields.
• The ability to maintain a consistent rpm range at all times - for delivering the realistic speeds and performance that giant-scale modelers demand.
• Includes EIS (Electronic Ignition System).
• High Torque
• Swings bigger props than 2-stroke engines.
• Excellent power to weight ratio.
• Needle settings are not affected by engine heat.

No more oil-gas mixing! Parts are lubricated by a constant flow of ultra-low viscosity oil from a pan on the bottom of the engine. A 3.4 oz (100 cc) bottle of oil is included.
Like all Fuji-Imvac engines, Fuji-Imvac 4-strokes offer the smooth, pinpoint throttle control of a Walbro butterfly carb. Fine-tuning the idle, low- and high-speed screws takes only a slotted screwdriver and a few seconds.	The BF-25 and BF-34 are gear driven engines, which make these powerhouses more reliable.

Fuji-Imvac's Electronic Ignition System offers these benefits to gasoline modelers: EASY STARTING — requiring much less effort to flip the prop. MORE DEPENDABILITY — first-time starts are more the rule than the exception. LESS WEIGHT — which reduces vibration and rotating mass on the crankshaft. EASY SETUP — installation that's virtually as easy as "Plug and Play". CONVENIENCE & LOW COST — the engine and EIS unit are together in one package. BETTER PERFORMANCE — due to higher rpm.

SPECIFICATIONS

BF-25EI 25 cc 4-Stroke Engine
Stock Number: FJIG0225
Displacement: 1.5 cu in (24.5 cc)
RPM Range: 1,400-9,000
Output: 1.6 hp @ 7,500 rpm
Weight w/Muffler: 4.65 lbs (2,113 g)
Weight w/o Muffler: 4.23 lbs (1,919 g)
Recommended Props: 18x6
Includes: Walbro® carb, muffler, mount, prop flange, bolt, spark plug & wrench
Requires: regular unleaded gasoline, engine oil, prop, engine kill switch, 4.8V NiCd or NiMH battery pack

2-view drawing

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