FujiFilm BT-86 Operator'S Manual Download Page 4

Starting Without Using the Choke (Recommended after the engine is well
broken-in.)  Temperature: 60°F (15°C) or higher.

1. Set the throttle at idle.

2. Turn the ignition OFF.

3. Slowly turn the propeller by hand about 20 times (depending on 

the temperature).

4. Turn the ignition ON and rapidly flip the prop several times. (Repeat steps

1-3 above if the engine will not start.)

If the engine still does not start, check for the following:

1. Flooding: Rotate the propeller rapidly with the throttle fully opened.

2. If the engine is dry, you can put 5 to 6 drops of fuel directly into the car-

buretor opening.

If you can’t tell whether the engine is flooded or dry, you can check by
the following method:

1. Remove the spark plug. If the plug is wet with gasoline, the engine is

flooded. Let the engine rest a few minutes, replace the spark plug and try
starting again.

2. If the spark plug is dry, put 3 to 4 drops of fuel directly into the cylinder.

Replace the plug and try starting again.

Ignition problems:

Remove the spark plug, but leave the ignition lead connected. Let the base
of the plug contact the cylinder head. Rotate rapidly and check for a spark.
The engine must turn at 500 rpm or more. Try it in dark room. A dirty plug
will not spark. If there is no spark, replace or clean the plug. If the gap
between the electrode and the center post is too large, there will be no
spark. The gap should be about 0.030”. Use a commercial spark plug gap-
ping tool to check this.

We recommend that you use an electric starter until you get used to how this
engine handles.

Summary of Contents for BT-86

Page 1: ...lays the ignition timing according to the number of ignition pulses increasing with the engine speed The fuel mixture is ignited at almost top dead center when idling and the timing is gradually incre...

Page 2: ...o cool prior to refueling Break in Operation Operate engine for about one hour with a fuel mixture that contains a 25 1 fuel oil ratio Do not break in by opening the high speed nee dle on the carburet...

Page 3: ...ly about 10 to 20 times more in Winter until fuel begins to move to the carburetor Swing the prop one half turn to move the piston from top dead center to bottom dead center and then back to top dead...

Page 4: ...llowing method 1 Remove the spark plug If the plug is wet with gasoline the engine is flooded Let the engine rest a few minutes replace the spark plug and try starting again 2 If the spark plug is dry...

Page 5: ...e mixture turn the needle clock wise To richen the mixture turn the needle counterclockwise Normal high and low speed settings It is rarely necessary to change the needle settings Normally only the H...

Page 6: ...ble engine damage do not use other types of spark plugs The plug gap is 0 025 030 If the plug gap is incorrect adjust it with a spark plug gapping tool wash it with gasoline and allow it to dry well b...

Page 7: ...rain fuel from A Always use oil intended for 2 cycle engines Use heat resistant rubber or silicon hose to extend the exhaust outlet from the muffler Metal tubing may cause the muffler retaining screws...

Page 8: ...ines will at its option repair or replace without service charge any prod uct deemed defective due to those causes You will be required to provide proof of purchase date receipt or invoice This warran...

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