Fuji Imvac BT-86EI Operator'S Manual Download Page 9

Problem:

 

The idle is not steady.

Solution:

 

Your low-speed needle “L” valve is too rich. Close it 1/8 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” needle will vary according to air temperature and field 
elevation. If your engine is running smoothly, then do not adjust this needle valve. 
Follow the recommended procedures if any of the following happens:

Problem:

 

1.

 Engine stops at full throttle.

 

2.

 Engine hesitates when accelerated rapidly.

 

3.

 The engine will not come up to full Rpm at full throttle.

Solution:

 

Your high-speed needle valve “H” is too lean. Open it 1/8 turn and try again.

Problem:

 

1. 

Your engine does not reach full rpm.

 

2. 

Carbon build-ups appear consistently on your spark plug.

Solution:

 

Your high-speed needle valve “H” is too rich. Close it 1/8 turn and try again.

3-Year Limited Warranty For USA and Canada

Fuji-Imvac warrants this product to be free from defects in materials and workmanship for a period of three (3) years 
from the date of purchase. During that period, Fuji-Imvac will, at its option, repair or replace without service charge 
any product deemed defective due to those causes. You will be required to provide proof of purchase date (receipt 
or invoice).

•  This warranty does not cover damage caused by crash, abuse, misuse, alteration or accident. Damage caused by 

customer disassembly, tampering, use of substandard fuel, use of incorrect accessories (spark plug, prop, etc.) or 
any use of the engine for which it is not specifically intended will automatically void the warranty of the engine. If 
there is damage resulting from these causes within the stated warranty period, Fuji-Imvac will, at its option, repair 
or replace it for a service charge not greater than 50% of the current retail list price. Be sure to include your daytime 
telephone number and e-mail address in case we need to contact you about your repair.

•  Under no circumstances will the purchaser be entitled to consequential or incidental damages. This warranty gives 

you specific legal rights and you may also have other rights, which vary from state to state.

•  If you attempt to disassemble or repair this unit yourself, it may void the warranty.

For service on your Fuji-Imvac engine, either in or out of warranty, send it postpaid and insured to:

Hobby Services

3002 N. Apollo Dr., Suite #1

Champaign, IL  61822 USA

(217) 398-0007

www.hobbyservices.com

Along with your engine and proof of purchase date, please include a complete written explanation detailing the 
problem(s). State your name and address clearly. For repairs not covered under warranty, you must specify whether 
you wish the charges to be billed COD or if you wish to be notified of the charges so you can send a check.

Outside USA and Canada, contact local importer for warranty information.

9

Summary of Contents for BT-86EI

Page 1: ...ghtweight 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...

Page 2: ...log passages inside the carburetor Because the carburetor is more complicated than those used in glow engines keep the fuel clean by using a fuel filter Use a filter intended to be used with gasoline...

Page 3: ...nd allow it to dry completely before you reinstall the plug in the engine Note If you want to check if the spark plug works remove the spark plug from the engine connect it to the coil and make sure t...

Page 4: ...ratios with any other brand of oil other than the Fuji Imvac oil Do not use the Fuji Imvac oil with any other brand of engines If you have been running the engine on other oil and wish to switch to Fu...

Page 5: ...t the ignition module battery to the kill switch Any 4 8V battery of 600mAh or more capacity will work well for this The approximate current consumption of the ignition switch module is 320mAh INSTALL...

Page 6: ...shrink tubing 8 Cut all necessary clearance and cooling holes in the cowl 9 Make sure the cowl is secured to the airplane and that the spinner to cowl clearance is at least 3 2mm 1 8 BREAK IN THE ENGI...

Page 7: ...e choke plate on the carburetor and open the throttle slightly from the idle position 4 Use your electric starter to turn the engine over for several seconds 5 Switch the ignition to ON and open the c...

Page 8: ...tment Note Do not confuse the idle screw with the low speed needle L The idle screw physically adjusts how much the carburetor valve can close The low speed needle L adjusts the gasoline to air mixtur...

Page 9: ...s warranty does not cover damage caused by crash abuse misuse alteration or accident Damage caused by customer disassembly tampering use of substandard fuel use of incorrect accessories spark plug pro...

Page 10: ...LIST 10 Key Part No Description 1 FJIG7500 Spark Plug Cap Assembly 2 FJIG7470 Spark Plug RCJ 6Y 3 FJIG4500 Decompression Valve Gasket 4 FJIG0112 Decompression Grommet 6 FJIG4440 Cylinder Set 7 FJIG82...

Page 11: ...her 15 2x22 36 FJIG1003 Sensor Unit 41 FJIG3910 Crankcase Assembly 42 FJIG6300 Oil Seal 43 FJIG3990 Crankcase Gasket 44 FJIG3060 Ball Bearing 6201 A2C3 48 FJIG8300 Hex Bolt 5x20 S 49 FJIG8255 Hex Butt...

Page 12: ...FJIG5280 Idle Adjust Spring G FJIG5220 Idle Adjust Screw H FJIG6240 Needle Valve J FJIG4650 Diaphragm Gasket K FJIG5790 Metering Diaphragm Comp L FJIG7630 Valve Spring M FJIG5130 Hinge Pin Set Screw N...

Page 13: ...688 Optional Prop Flange 60mm 2 3 8 FJIG7689 Optional Prop Flange 70mm 2 3 4 13 Key Part No Description 77 FJIG6090 Muffler Set 78 FJIG5940 Muffler Gasket 79 FJIG8280 Hex Bolt 5x16S 80 FJIG8605 Split...

Page 14: ...ENGINE MEASUREMENTS 171mm 50mm 14mm 129mm 74mm 123mm 126mm 108mm 103mm 39mm 71mm 87mm 67mm 14...

Page 15: ...Entire Contents Copyright 2009 FJIZ1189 for FJIG0089 V2...

Reviews: