Mec 300E User manual

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OWNERS MANUAL
FOR MEC 300E/400EWOBBLE
(SHOWN ON T-CART, NOT INCLUDED)
PLEASE READ AND FULLY UNDERSTAND THE INSTRUCTIONS PRIOR TO SETTING OR
TUNING THE MACHINE.
CAUTION: ANY MEC CLAY TARGET MACHINE MUST BE IN THE DISARMED STATE WITH THE
BATTERY DISCONNECTED PRIOR TO MAKING ANY ADJUSTMENTS, LOADING THE CLAY
TARGETS OR TRANSPORTATION OF MACHINE.
Step 1 –Securely set the machine in the trap house. See below for the correct way to install the
MEC machine into the trap house. IF NOT FASTENED SECURELY, SERIOUS INJURY AND/OR
DAMAGE TO MACHINE CAN OCCOUR!!!
DO NOT CONNECT THE POWER. Ensure that the machine is in the DISARMED/SAFE position.

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Step 2 –In most cases, your machine has been supplied to you ready to fire. If so, please proceed
to Step 3. If your machine is supplied in a box without its carousel (shown below) fitted, you will need
to attach it to the machine. Simply slide the carousel weldment onto the top plate shaft. If no grease
is present, please add a little bit to the shaft. You may have to spin/rotate the carousel counter
clockwise for it to slide on. Next, place the gray plastic collar over the shaft and onto the flange
bearing in the carousel. Now place the ¾” washer and nut onto the threads and tighten. Do not over
tighten. You want a little bit of resistance there, but not too much. You shouldn’t be able to spin the
carousel with one finger.

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Step 3 –Your machine was factory set to White Flyer clays. Some clays vary in size based on
manufacturer. You may need to check the height / clearance of the knife-edges by placing a clay in
the carousel. Rotate the carousel so that the clay starts to pass underneath the inner and outer knife
separator blades. The clay must pass freely under the knife separator blades without binding but with
the minimum of clearance. Adjust if necessary with 7/16” open ended wrench. You are looking for a
gap about the thickness of a business card, between the horizontal shoulder of the clay and the
underside of the knife edges. Photos below show adjustment with carousel fitted, but you can
remove the carousel to make adjustment easier if preferred.
** ALL MEC MACHINES ARE SET UP USING THE WHITE FLYER STANDARD
TARGETS. ADJUSTMENTS NEED TO BE MADE WHEN USING OTHER BRANDS
OR STYLES OF TARGETS**

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UNDERSTANDING THE CONTROL BOX
DISARM
OFF
ARM
FIRE
BUTTON
ROTATION
REMOTE
DISARM
SOCKET
OSC ./ ELEV.
BREAKER
MAIN
BREAKER
ELEVATION

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Rotation Toggle Switch –Pushing the switch downward will turn the oscillation motor on. Note that
the oscillation motor will randomly start/stop when the machine is in operation. This prevents
shooters from being able to predict the direction of the next target. Pushing the toggle switch upward
allows you to nudge the oscillation motor which pivots the machine from one side to the other
enabling you to check the angle of the clays flight.
Elevation Toggle Switch - Pushing the switch downward will turn the elevation motor on. Note that
the elevation motor will randomly start/stop when the machine is in operation. This prevents shooters
from being able to predict the direction of the next target. Pushing the toggle switch upward allows
you to nudge the elevation motor which elevates the machine up and down enabling you to check the
clays flight.
Remote Disarm Socket –The machine is supplied with a remote disarm box assembly and 10ft. of
cable. This unit plugs into the remote disarm socket on the control box, allowing the remote disarm
box assembly to be placed by the opening of the trap house. The user can now disarm the machine
before entering the trap house.
Fire Button –The fire button allows you to test fire the machine from inside the trap house.
Disarm/Off/Arm –Pushing the switch downward to the arm state will arm the machine. Pushing the
switch upward will cause the machine to fire (if in armed state) and disarm when the switch is
released. Note –holding the disarm toggle will continually fire clay targets. Please use caution!
Breakers –The breaker on the left is for the oscillation motor. The breaker on the right is for the
cocking motor. If the breaker trips, it needs to be pushed back in to reset.
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Step 4 –Check that the ARM/OFF/DISARM switch on the electrical box is in the OFF position.
Step 5 –Visually check, from the rear of the machine, that the motion of the Throwing Arm is not
restricted or blocked in any way.
CAUTION: ALWAYS OPERATE THE MACHINE FROM BEHIND, NEVER FROM
THE FRONT OR THE SIDES OF THE MACHINE. KEEP HANDS AND BODY PARTS
AWAY FROM THE MACHINE WHEN ARMING, RELEASING AND DISARMING.

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Step 6 –Standing at arm’s length behind the machine and making sure that all body parts are clear
of the machine, push the ARM/OFF/DISARM toggle switch into the DISARM position and then
release it as soon as the throwing arm fires. The toggle switch is spring loaded and will return to the
off position as soon as the switch is released, stopping the machine from re-arming itself. If done
correctly the arm will be pointing away from the left side of the machine when viewed from behind.
Disconnect the power supply to ensure that the machine is not accidentally armed while
adjusting and loading the machine.
Step 7 –Place a couple of clays in each of the carousel columns, for the purpose of testing the clay
flight and trajectory.
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ADJUSTING THE ELEVATION OF THE MACHINE
Step 8 –For ATA, set the angle of elevation, push the elevation toggle switch upwards to the nudge
position and release when the correct elevation is achieved. See the ATA guidelines for correct rules
regarding clay height and distance.
Step 9 –The machine comes pre-set from the factory, but it is possible to increase the Wobble
minimum angle of elevation in the following way. Loosen the ¾” jam nuts on the elevation crank
assembly and then either extend or retract the threaded rod. You will need to remove 3/8” allen bolt
from the elevation clamp block to allow you to adjust the height setting. NOTE: YOU WILL NEED TO
SUPPORT THE FRONT OF THE MACHINE WHEN MAKING THIS ADJUSTMENT AS THE
MACHINE WILL ROTATE DOWNWARD.
Step 10 –When shooting Wobble, push the elevation toggle switch down to the on position and the
machine will automatically move up and down.
Step 11 –The up and down angle of elevation is adjustable. Simply loosen the 3/8” allen bolt and
slide it out on the slot of the clamp block to increase the height of the clay flight. Retighten the bolt
securely and test fire. Sliding the bolt in on the slot will reduce the height of the clay flight.
LOOSEN THIS
ALLEN BOLT

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ADJUSTING THE TILT/ANGLE OF THE MACHINE
Step 12 –Adjust the machines tilt by loosening the lever on the rear side (Photo #1) of the upright of
the machine as shown below. Tilt the machine to the desired angle by adjusting the turnbuckle.
(Photo #2) Adding tilt allows the machine to throw a flat target with no curl. Once the correct tilt has
been achieved
RETIGHTEN THE LEVER TO KEEP THE MACHINE FROM SHIFTING OVER TIME. NOTE: You
may need to use a ¾” wrench to make this adjustment on the turnbuckle.
1. 2.

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CENTERING THE FIELD
Step 13 –Set the bolt in the center of the rotation gear box shaft as shown in Photo #1 below. To
center the field, fire a clay and see if the clay comes out of the center of the trap house and travels
straight away down the center of the field.
Step 14 –Next, adjust the turnbuckle if the clay is not traveling straight away down the center of the
field. Simply loosen the nuts on the turnbuckle and either push or pull the machine to get the trap to
fire the clay on center. RETIGHTEN THE NUTS ON THE TURNBUCKLE TO HOLD THE
CORRECT ADJUSTMENT!!!
Step 15 –Once centering the clay is achieved, remove the 3/8” allen bolt from the center of the shaft
(Photo #1), and place the jam nut under the clamp block as shown below in Photos #2, #3 and #4.
Step 16 –Tighten the bolt in the center of the clamp block slot. You can now test the angle that the
machine will throw the clay.
Step 17 –To open up the flight angle of the clay, loosen the 3/8” allen bolt and slide it out on the slot
of the clamp block. Retighten the bolt securely and test fire. Sliding the bolt in on the slot will reduce
the angle flight of the clay.
1. 2.
ADJUST THE
TURNBUCKLE
HERE TO
CENTER THE
FIELD.

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3. 4.

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Step 18 –You can adjust the distance that the clay is thrown by extending the spring. This is
achieved by winding tension on or off the main spring using a ¾” wrench or the optional ¾” extended
socked which can be attached to an impact drive. This should be done with the machine in the
disarmed/safe condition for small adjustments.
AFTER ADJUSTING THE MAIN SPRING FOR THE CORRECT
THROWING DISTANCE, THE NUTS ON THE SPRING STUD MUST BE
TIGHTENED SECURELY AGAINST EACH OTHER.
Step 19 –The pull cord or optional radio release can now be connected to the machine.
The pull cord or basic wireless release is connected to the yellow-ended wire plug.
A multi-functional wireless controller will be connected to the remote dis-arm socket.
1. LOOSEN NUT
2. TIGHTEN OR LOOSEN NUT
TO DESIRED SPRING TENSION
3. RETIGHTEN BOTH
NUTS SECURELY
WHEN DONE!!!

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Step 20 –Now that the machine is set to the correct ATA standards, carefully fully load the carousel
with clays, removing any clays that show signs of damage. Load clays as evenly as possible and do
not over load.
Step 21 –The machine can now ready for use by pressing the ARM/OFF/DISARM toggle switch,
down to the “ARM” position.
Step 22 –Press the fire button on the pull cord or radio release. This will cause the machine to fire a
clay target and then reset to the firing position. Pressing the fire button again will do the same as
above. Pressing and holding the fire button will continuously fire clays continuously
Your machine is now operating smoothly and ready for use. It is critical that you never load or
make adjustment to the machine unless it is disarmed and the power disconnected. While in
storage, the machine must be left in the disarmed state and the power/battery disconnected. Any
spring tension does not need to be released.
Your machine is now operating smoothly and ready for use. It is critical that you never load or make
adjustment to the machine unless it is disarmed, and the battery disconnected. While in storage, the
machine must be left in the disarmed state and the battery disconnected. Any spring tension does
not need to be released.
For all ATA rules and guidelines please see the link below.
https://www.shootata.com/Portals/0/pdf/ata_rulebook_web.pdf

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FAULT FINDING MECHANICAL
CAUTION: ANY MEC MACHINE MUST BE IN THE DISARMED STATE WITH THE BATTERY
DISCONNECTED PRIOR TO MAKING ANY ADJUSTMENTS, LOADING WITH CLAYS OR
TRANSPORTING
1. The Machine breaks clays - Check loading cycle first:
(a) Check that clay in the carousel is intact, not chipped or cracked. If in doubt, remove suspect clays and refill
with ones known to be intact.
(b) With the machine switched “OFF”, rotate the carousel by hand, removing each clay as it drops onto the
throwing plate. Check for cracks and chips. If the clays arrive on the plate intact, then move on to the throwing
section below.
(c) If they arrive chipped or cracked then remove the carousel and check that the clay slides under both inner
and outer knife edges. There should also be some space between the inside and outside knife edge, about 1/8”.
Check that the knife-edges are not excessively high. 2 clays should have split without chipping or damaging the
top or bottom clay. Using a 7/16” wrench adjust both knife-edges accordingly.
https://www.youtube.com/watch?v=cBz4NKNj9I4 knife settings
(f) When loading the clays be sure there are no tight spots in the carousel. Occasionally machines can suffer
slight damage to the carousel.
1/8” SPACE
BETWEEN CLAY
AND KNIFE BLADE

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Check throwing cycle next:
(a) Check that the bolt holding the arm to its clamp block is tight.
(b) Check arm for chunks missing from the black arm rubber or any other physical damage to the arm. If
damage has occurred the black arm rubber should be replaced.
(c) Check for damage to the throwing plate, in case it has been dented, bent or burred. Ensure that no screw
heads protrude and that there are no other obstructions to the clay’s path.
(d) Check the height of the arm over the plate across its whole surface to ensure that the clay fits under the black
rubber throwing arm strip with about 1/16” clearance. Any more than this clearance can cause the arm to break
the clay by riding over it. Adjust by raising or lowering the throwing plate with 4- ½” nuts on the plates
adjustment bolts.
2. Machine throws clays but:
(a) The clay barely flies off throwing plate:
Check the height of the arm over the plate across its whole surface to ensure that the clay fits under the
black rubber throwing arm strip with about 1/16” clearance. Any more than this clearance can cause the
arm to break the clay by riding over it. Adjust by raising or lowering the throwing plate with 4- ½” nuts
on the plates adjustment bolts.
https://www.youtube.com/watch?v=qPnQpIMGT7E E-series arm settings
https://www.youtube.com/watch?v=IDGtb62lXj4 XP series arm adjustments
The arm might be bent down or the throwing plate bent up, squeezing the clay between them, the arm or
plate should be replaced or straightened.
(b) The clay goes no distance (even though the main spring is wound up tight).
The arm is probably bent upwards causing clay to go under it at its tip. This will also cause clays to
break, the solution, is to straighten or replace the arm.
(c) The clays are inconsistent in direction.
This could be caused by buildup of debris on the throwing plate; dirt, leaves, pieces of broken clay.
This is could also be caused by the front rail not moving freely. Light oil or a mechanical adjust if not
free.
(d) If the machine is a “Midi” or Mini”, the arm timing could have slipped.
3. Carousel does not rotate.
Check the following:
(a) The Carousel pusher arm is not jammed with broken clays or dirt.
(b) The pusher return spring is broken or missing.
(c) With the pusher arm withdrawn, the carousel should be free to rotate with a small amount of friction. This is
adjusted by tightening or loosening of the lock nut on top of the carousels shaft.

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(d) Carousel pusher timing is in-correct, i.e. when the gearbox crank and connecting rod are in line at maximum
extension, the Rear Pusher nylon for the carousel should be deep into the cut out on the Top Plate (100 e, 200e,
300e. 306xp). If your machine is a 400e or 408xp then the rear pusher will be on the radius of the top plate. If
this is not the case, then the clamp on the rear pusher shaft should be adjusted accordingly. It must be tightened
before operation of the machine.
https://www.youtube.com/watch?v=N3Wdk88efTQ XP pusher shaft

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FAULT FINDING ELECTRICAL
CAUTION: ANY MEC MACHINE MUST BE IN THE DISARMED STATE WITH THE BATTERY
DISCONNECTED PRIOR TO MAKING ANY ADJUSTMENTS, LOADING WITH CLAYS OR
TRANSPORTING
1. Machine does not Arm
Check:
(a) Battery is charged and that connections are tight.
(b) Toggle switch is in the down ON position or on the Handheld that the “ARM” indicator light is on.
(c) There are 3 components in place to protect your electrical box.
1. Re-settable breaker. Found on the side of the electrical box. (older models have non-resettable breakers)
2. 60amp or 70amp relay. Found inside the electrical box. (automotive type)
3. Inline fuse. Found inside electrical box. (7.5amp automotive type 2 prong fuse)
https://www.youtube.com/watch?v=JZZmYQtybAE replacing fuse

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(b) Check the above items.
(c) If your machine has a Gray Arm / Dis-arm box. Make sure the wires inside are in good shape, free of
corrosion and not pinched on the bottom of the box. Green to White would by-pass the switch and arm the
machine. This would indicate a faulty switch.
3. Machine runs in DISARM position, but not in the ARM position.
(a) Check for faulty relay.
4. Machine ARMS but will not fire on the Pull Cord button.
(a) Either the connections, cable or command push button are faulty. Disconnect the 110V Plug from the Pull
Cord, using a lead wire, with 1” stripped of each end, insert into the Positive and Negative sides of the outlet
plug. Once contact is made, the machine should fire.
If the trap does not fire, then there is a broken wire in the cable or a bad connection in the three-pin plug
or control box.
(b) If the trap does fire then reconnect the Pull Cord, remove the cover on the push button box and short across
the two spade connectors.
If the trap fires - then the push button is faulty.
If the trap does not fire - then there is a broken wire in the Pull Cord or a bad connection in the three-pin
plug.
5. Trap fires by itself.
(a) Disconnect the Pull Cord and switch the trap back on.
If the trap cocks normally - then the Pull Cord is damaged or shorted out. Alternatively, the push button
switch is stuck in or faulty.
(b) If the trap continues to fire –Check to make sure the Throwing arm is contacting the roller limit switch arm.
The arm should pass over the limit switch with only a small amount of space.
(c) If the machine still fires by itself - check if the relay contacts have stuck together, and if so replace. If the
relay operates correctly, but the trap still fires by itself, then the roller limit switch is faulty and should be
replaced.
(d) If the machine still fires by itself –Throwing arm timing could have slipped. Call the Technical Support
Line for help.

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CORRECT POSITION OF MACHINE BASE IN TRAP HOUSE

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CUSTOMER SERVICE
We're here and ready to help you! Don't forget to take advantage of our trouble shooting guide, website videos, and
online owner's manuals, which are available 24/7. You may contact factory customer service at:
MEC Outdoors
800 Horicon Street, Suite 1
Mayville, WI 53050 USA
1-800-797-4632
[e-mail]
MEC OUTDOORS
Website: www.mecoutdoors.com
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Instagram: www.instagram.com/mecoutdoors.official/
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YouTube:www.youtube.com/mecoutdoors
Mayville Engineering Company (MEC)
Website: www.mecinc.com
Thanks for choosing MEC! Every machine is hand set and tested prior to leaving our shop to ensure
quality. We take pride in our products, so you can have a better experience in the field. Your
patronage is very much appreciated!
For any questions regarding setup or use of any MEC Clay Target Machines, please give us a call or
you can visit us on our website for video footage showing how setup and adjustments are made.
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