(1) Check to make sure that the cork float inside the fuel reservoir is
in good shape. No one reproduces the cork floats so if your float is in
bad shape then you may have to buy
cork and make your own. Old cork will need to be re-sealed if you are
using gasoline with ethanol in it. Sealers that have been used include
: PVC pipe glue, fuel tank sealer, Light coat of 2 part epoxy
sure top on fuel reservoir is sealing tight.
(3) Use gasoline to start your engine for the first time. you can try
kerosene, etc.. later after you know the engine is running correctly.
(4) Fill fuel
reservoir to the top of float with gas before trying to start engine.
(5) You may have to prime engine with gas to get it started, use primer
cup valve on side of cylinder.
(6) If you have a two piece
reservoir height should be adjusted so that the fuel level in the
reservoir is on
the center line of the .075 thousands hole in the injector nozzle. Follow
steps A & B below.
(A) Set fuel level in
reservoir first: Add fuel in reservoir until float ball needle has
seated in the up direction. A squirt bottle works good for this and will
allow you to add a little fuel at a time. Once the ball needle has
seated up then the fuel is at the correct height. Use a black marker and
mark the fuel height on the outside of reservoir then drain fuel from
(B) The black mark should line up to the center line of the .075
thousands hole in the injector
nozzle. If not you will have to remove the reservoir from the engine and
then adjust reservoir up or down on the thread which ever is required.
If the reservoir height is set to high your engine
with gas. If the reservoir height is set to low your engine may not receive gas.
This is a pain to adjust and there is a little bit of guess work
involved but it must be set fairly close.
(7) Make sure check ball and check needle ball on bottom of fuel reservoir
are not gummed up and are working correctly.
on air-intake valve and governor weight. If you had to replace these
springs you may have trouble getting your engine to run. They have to be
the correct size and adjusted to the correct tension in order for the
engine to run. Trial & error is about the only way to do this. On
the air intake valve if you have to stiff of a spring then it is not
going to let air in the crankcase there for you are not going to get any
fuel. To light of a spring on the air-intake valve and the engine gets to
much air and to much fuel, caution! engine could try to run away. Be
ready to pull spark wire off, disconnect battery or open switch on timer
lever. If the governor spring has to much tension then the governor will
not kick in to slow the speed down. If to light of a spring is used then
the engine may run faster. You sorta have to find a balance between the
governor spring and the spring on your air intake valve. Adjusting Air Intake Valve: When the nut on the air-intake valve is adjusted clockwise more tension is
put on the valve allowing less air to enter into the crank case there fore lower
crank case pressure, lower fuel pressure, lower RPM. If the nut on the air-intake valve
is turned counter clockwise the tension on the valve is decreased allowing more air to
enter into the crank case there fore more air pressure is created more fuel
and in return more RPM.
(9) When starting your engine for the first time I recommend
setting the timer lever to vertical position 12 a clock and
turning the engine through compression quickly. Once you know your
engine is running good and you have learned where your mixter &
governor settings should be then you can try to bump start the engine.
(10) Your timer lever also controls the speed of
your engine. Always remember this, which ever direction the flywheels
are turning if you move the lever in the same direction the engine rpm will
slow down. Move the lever opposite direction to speed the engine rpm up.
(11) (Bump Starting) Position of timing lever for starting engine.
See starting instructions shown below and diagrams from figure #4 and
figure #5. In these diagrams the (A) arrow is the direction you
want the engine to run. The (B) arrow is the direction you turn the flywheel to bump
(12) Use hard
grease on main bearings, This helps to seal in crank case pressure so fuel injection system works
(13) Do not run engine with out water cooling tank attached and full of water.
Remember this is a two cycle engine it gets hot very fast.
(14) Before trying to run your engine check the oil ring disk inside the
crankcase for rust holes. These disk have a rolled lip on the outer
diameter for collecting oil from the drip oiler and
centrifugally sending it to the outer lip of the disk and through a hole
into the lower con rod bearing. If there are rust holes in the disk then
the oil may never make it to the lower con-rod which could result in
damaging the lower con-rod bearing. The disk is made out of thin sheet
metal and often gets rust holes if the engine has been setting for
years. You will have to disassemble the crankshaft out of the crankcase
to check this.
(15) Make sure the drip oiler lines are connected to the correct ports. (See Detroit photo
section). Make sure the drip oiler/oilers have a check balls installed. This allows the lubrication
and fuel injection systems to work correctly by keeping crank case pressure from escaping and blowing oil
and air back up the lines into the drip oiler. Use 30 weight
non-detergent oil in the drip oilers.
(16) If you run your engine exceptionally slow (200-300 rpm) you may get air blow
back from the crank case in your oiler because there is not enough
pressure and suction to make the check balls work correctly in your drip oiler as a
result your engine may not receive proper lubrication. On my Detroit's
that have carb or mixer I mix two cycle
oil with the gas at a ratio of 100 to 1 and I also use the drip oilers. I run my engines very
slow under no load. If you are going to put your engine under load such
as in a boat, etc. you probably will want to run more oil in your mix
like (50:1 or 30:1) It's better to be safe then sorry. I still
like to use the drip
oiler to lubricate the lower con-rod bearing. I would also use the drip oiler to
lubricate the cylinder and upper con-rod bearing. On the fuel
injected Detroit engines mixing 2 cycle oil with fuel does not really do
much for lubrication because most of the oil ends up being burned in the
combustion chamber and going out the exhaust port.
(17) If you have trouble with engine not wanting to start and engine
appears to be flooded try draining excess gas and oil from the crank
case drain. This may help your problem. If you let the engine
set over night or longer you will want to drain the excess oil &
fuel from the crankcase before trying to start the engine. If you do not
do this the engine may not start and if by chance it does start it will
blow blue smoke really bad.
(18) To start your engine on kerosene fill main tank with
kerosene. Fill fuel reservoir to the top of float with gas.
This will allow the engine to warm up a little before switching over.
You can also run the engine on kerosene just by using gasoline as a
starter in the primer cup that's located on the cylinder.
(19) Most important is Patients! If you have
completely disassembled your engine for restoration chances are there
are going to be some problems in getting it started for the first time.
If you have problems with your engine that you can not figure out, email
me and I will try to help you.