Question about Black & Decker 19" Electric Lawnhog Mulching Mower with Rear Bag

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The wiring of an AC motor panel

I would like to know more on the above subject along with the components required for switch gear circuit and motor circuit, circuit diagrams and the procedure for wiring the motor circuits.

Solomon
ntjanas@yahoo.co.uk

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If you can let me know exactly what it is you are trying to achieve I will be able to help out. For instance do you need the motor to run continously, does it need to have variable speed, is it single or three phase, what rating is the motor
daz

Posted on May 14, 2008

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2 Answers

I have a yard master riding mower. It's got a new carb, does fine in reverse. When I put it into forward, it dies after about 20 seconds & backfires. Spark plug is fine, cleaned out exhaust. HELP!


if it runs fine in reverse , there is no problems with the motor
when you put in forward check for wires shorting out , faulty switches , safety switches gear change switches or wires that are tangling somewhere
the backfiring is from an uncontrolled circuit for the coil , something continually switch it on and off when it is running

Jun 08, 2016 | Riding Mowers & Garden Tractors

1 Answer

Tractor starts. When put in gear and let off clutch motor stops. Thanks in advance.


On newer lawn tractors there is a safety switch on the seat. When in gear the seat presence switch must be engaged for the tractor to stay running when the clutch is let out,.

Check wiring connector to the switch. Seat requires minimum weight so child protected.

The following video provides insight to this problem, Read the first comment which describes a similar problem to yours.
How to test lawn mower electrical safety switches

Dec 23, 2015 | Riding Mowers & Garden Tractors

2 Answers

How to fix 1982 xs 650 yamaha starter?


it could be your button i know this bike very well
does not matter if it is the xs 1 or the xs2 the same set up applies
there are a few components you need to test first
starter button
starter solenoid
wiring
main fuse

i will also tell you some major mods i did to one
when i was dragging the xs650 at super twins
which included a rebore to a 1056cc and having 7 gears
and a turbo

to eliminate the button
with the battery still connected
get a spanner or a screwdriver and not doing it to long
arc out the two polls on your starter solenoid
if you do not know what that looks like follow the main red wire
that goes from your battery
the first stopping point will be the starter solenoid
one poll clamps the main wire from the battery
second poll clamps the main wire to your starter motor
arc out the two polls with a spanner or a screwdriver
to test the motor
if your motor turns the engine then it is not your starter
the problem lies in either your

starter solenoid, (this is a sealed unit replace unit with a new one)
the wiring, (test main wire from your ignition to your switch
also test wire from your switch to your starter solenoid also clean all your wiring connectors)
your starter button, (strip and clean)
main fuse, (replace with a new one)

if the motor does not turn
then you will need to remove the starter motor
before you take the starter motor apart
test it with a multimeter
set on omes test each wire on the body of the starter motor starter
to check if the windings inside are earthing out on the body
if there is a reading on the multi meter
then your windings are earthing out
if there are no reading it may just need a clean up and new brushes fitted
and reassemble your ride

TRIED AND TESTED ENGINE MODS

if you play or really want to play there are a few major mods you can do that have been tried and tested

REBORE TO 1056CC GRASSTRACK MODS
parts needed
slab billet alloy 13in x 8in x 1.5in (for stroker kit)
or a pre brought stroker kit from halco tuning or wisco
get 2 mercedes benz 2.3 pistons ( for rebore)
2 barrel liners
find a good engineer and rebore your barrels and fit new sleeves
fitted with your 2.3 pistons

by fitting the stroker kit you will lose the standard top engine mount
or have more made as you by now should know a good engineer

EXTRA GEARS
remove kick starter reduction gears
find a good engineer and have 2 more gears made up
and fit

TURBO FITTING
tried and tested turbo fitting
a mk 1 land rover turbo is small
and can be fitted under the carburettors
with a heat shield fitted between the carbs and the turbo

these are all mods i have done to the xs650
i built and raced i got to 180 mph over the 1/4 mile strip
with a xs650 hardtail chop that looked like a standard engine

have fun

Jun 22, 2014 | Ford 8n,9n,2n, Tractor Starter With Drive

1 Answer

Sears 21 h.p. lawn tractor


Sounds like a safety interlock. Was there any electrical wires going to the deck, to the engage switch, the up down lever? There is a neutral switch that is closing or opening and the circuit is shutting down the motor.

Feb 08, 2014 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

1 Answer

Troy bilt pony will not start. replaced 20 amp fuse and battery


OK -- Here's what to do:
TROY-BILT PONY LT CRANKING CIRCUIT TROUBLESHOOTING

NOTE 1: The following tests are to be made with the parking brake applied and the PTO disengaged unless otherwise specified.

NOTE 2: These tests need only be made until the cause of the problem is located. The entire process need not be completed if the problem has been resolved.

NOTE 3: Refer to the wiring diagram below for understanding of all tersts.

NOTE 4: Wiring Diagram references to Key switch A1 and L terminals refer to the same terminal.

1. With all circuits connected normally, connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the battery positive terminal. The voltmeter should read at least +12.6 VDC.
a. If NO, go to step 2.
b. If YES, go to Step 3.

2. Connect a DC voltemeter directly across the battery. The voltmeter should read at least 12.6 VDC.
a. If NO, charge or replace the battery.
b. If YES, check and repair/replace the following items as required, then repeat Step 2 test. If YES on retest, go to Step 3.
-- battery negative cable condition
-- battery negative cable connections at the battery
-- battery negative cable connections at the tractor frame

3. With all circuits connected normally, connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the key swttch "B" terminal (Circuit #97 - red/white wire). The voltmeter should read at least +12.6 VDC.
a. If NO, go to step 4.
b. If YES, go to Step 8.

4. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the starter relay BAT terminal (Circuit #94 - heavy red wire). The voltmeter should read at least +12.6 VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 4 test. If YES on retest, go to Step 5.
-- battery positive cable condition
-- battery positive cable connections at the battery
-- battery positive cable connection at the starter relay
b. If YES, go to Step 5.

5. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the fuse holder BAT terminal (Circuit #92 - red wire). The voltmeter should read at least +12.6 VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 5 test. If YES on retest, go to Step 6.
-- Circuit 92 wire condition
-- Circuit 92 wire connection at the starter relay
-- Circuit 92 wire connection at the fuse holder
b. If YES, go to Step 6.

6. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the fuse holder protected circuit terminal (Circuit #97 - red & white wire). The voltmeter should read at least +12.6 VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 6 test. If YES on retest, go to Step 7.
-- 20A fuse condition
-- fuse holder condition
-- fuse holder wire connections
b. If YES, go to Step 7.

7. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the key switch "B" terminal (Circuit #97 - red & white wire). The voltmeter should read at least +12.6 VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 7 test. If YES on retest, go to Step 8.
-- Circuit 97 wire condition
-- Circuit 97 connection at fuse holdser
-- Circuit 97 connection at key switch
b. If YES, go to Step 8.

8. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the key switch "S" terminal (Circuit #80 - orange wire). With the key held in the START position, the voltmeter should read at least +12.6 VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 8 test. If YES on retest, go to Step 9.
-- key switch assembly
b. If YES, go to Step 9.

9. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the parking brake switch Circuit #80 terminal (Circuit #80 - orange wire). With the key held in the START position, the voltmeter should read at least +12.6
VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 9 test. If YES on retest, go to Step 10.
-- Circuit 80 wire condition
-- Circuit 80 connection at key switch
-- Circuit 80 connection at parking brake switch
b. If YES, go to Step 10.

10. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the parking brake switch Circuit #70 terminal (Circuit #70 - orange & black wire). With the key held in the START position, the voltmeter should read at
least +12.6 VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 10 test. If YES on retest, go to Step 11.
-- parking brake switch assembly mounting and adjustment
-- parking brake switch assembly condition
b. If YES, go to Step 11.

11. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the PTO switch Circuit #70 terminal (Circuit #70 - orange & black wire). With the key held in the START position, the voltmeter should read at least +12.6
VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 11 test. If YES on retest, go to Step 12.
-- Circuit 70 wire condition
-- Circuit 70 connection at parking brake switch
-- Circuit 70 connection at PTO switch
b. If YES, go to Step 12.

12. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the PTO switch Circuit #60 terminal (Circuit #60 - orange & white wire). With the key held in the START position, the voltmeter should read at least +12.6
VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 12 test. If YES on retest, go to Step 13.
-- PTO switch assembly mounting and adjustment
-- PTO switch assembly condition
b. If YES, go to Step 13.

13. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the starter relay Circuit #60 terminal (Circuit #60 - orange & white wire). With the key held in the START position, the voltmeter should read at least
+12.6 VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 11 test. If YES on retest, go to Step 14.
-- Circuit 60 wire condition
-- Circuit 60 connection at PTO switch
-- Circuit 60 connection at starter relay
b. If YES, go to Step 14.

14. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the starter relay MOT terminal (Circuit #93 - heavy red wire). With the key held in the START position, the voltmeter should read at least +12.6 VDC.
a. If NO, did the relay make a single heavy "click" noise?
1. if YES, replace the starter relay and repeat Step 14 test. If YES on retest, go to Step 15.
2. If NO, connect a DC voltmeter DC voltmeter black (NEG) lead to the battery negative terminal and the red (POS) lead to the starter relay frame. With the key held in the START position, the voltmeter should read a maximum of +0.1 VDC.
a. If YES, replace the starter relay and repeat Step 14 test. If YES on retest, go to Step 15.
b. If NO, check and repair/replace the following items as required, then repeat Step 14 test. If YES on retest, go to Step 15.
-- starter relay mounting
b. If YES, go to Step 15.

15. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the starter motor BAT terminal (Circuit #93 - heavy red wire). With the key held in the START position, the voltmeter should read at least +12.6 VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 15 test. If YES on retest, but the starter motor does not engage, go to Step 16.
-- Circuit 93 cable condition
-- Circuit 93 cable connection at starter relay
-- Circuit 93 cable connection at starter motor
b. If YES, but the starter motor does not engage, go to Step 16.

16. Connect a DC voltmeter black (NEG) lead to the battery negative terminal and the red (POS) lead to the starter motor frame . With the key held in the START position, the voltmeter should read a maximum of +0.2 VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 16 test. If YES on retest, but the starter motor does not engage, go to Step 16b.
-- starter motor mounting to engine
-- engine mounting to tractor frame
b. If YES, but the starter motor does not engage, replace the starter motor.


REFERENCE PART NUMBERS PER WIRING DIAGRAM:

Note that your specific tractor may use differnt part numbers. You can obtain a Parts List specific to your tractor online, at no charge, from Troy-Bilt at www.troybilt.com -- your full model number and serial number are required.

Key Switch 725-04228 (common alternatives are 925-04227B & 925-04659)Parking Brake Switch 725-1657A (common alternative is 725-04363)
PTO Switch 725-1657A (common alternative is 725-04363)
Starter Relay 725-04439

Also note that the starter motor is an engine manufacturer supplied part.



7_20_2012_4_14_09_pm.jpg

Jul 19, 2012 | Troy Riding Mowers & Garden Tractors

2 Answers

How do you keep the motor running when you get off the seat? How do you keep the blades turning when you back up?


those are both safety features built on every lawn tractor made for past 20 years. every summer they save countless feet, dogs, and grandchildren. lift the seat up, you will find a pressure switch which either opens or closes a circuit when somebody sits in it. take that switch out of the circuit, and you now have a mower which will allow you to put your toes under the running deck when you are not in the seat. you will find a similar switch attached to the reverse gear actuation mechanism. disable that and you are free to back over everything and anything with blades a'spinnin.

Mar 23, 2011 | Cub Cadet Riding Mowers & Garden Tractors

1 Answer

My craftsman lt 1000 lawn tractor will not start. When I turn the key the starter motor spins but the gear will not raise up and engage the flywheel. Do I need a new starter? (18 hp b&s 42 Inch cut) If...


Starter motor spins, but does not engage
  1. Check the starter motor for a seized or binding pinion gear.
  2. Remove the flywheel inspection plate and check for a damaged ring gear.
  3. Engine stalls immediately when started
    1. Check the ignition switch condition and operation. The electrical contacts in the run position may be worn or damaged. Try restarting the engine with all electrical accessories in the off position. Sometimes turning the key on an off will help in emergency situations, however once the switch has shown signs of failure, it should be replaced as soon as possible.
    2. Check for loose, corroded, damaged or shorted wires for the ignition system and repair or replace.
    3. Check for manifold vacuum leaks or vacuum hose leakage and repair or replace parts as necessary.
    4. Measure the fuel pump delivery volume and pressure. Low fuel pump pressure can also be noticed as a lack of power when accelerating. Make sure the fuel pump lines are not restricted. The fuel pump output is not adjustable and requires fuel pump replacement to repair.
    5. Check the engine fuel and ignition management system. Inspect the sensor wiring and electrical connectors. A dirty, loose or damaged sensor or control module wire can simulate a failed component.
    6. Check the exhaust system for internal restrictions.

May 12, 2010 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

2 Answers

My story is the same. I have an MM600, replaced switch, and still trips breaker in variety of configurations. I have tried both of the relevant configs recommended on this site, and no luck. Is there...


As you know a breaker tripping is a result of a direct short inside the electrical circuity of your mower.

That short can be anywhere from just beyond the switch all the was down to the winding in the motor.

There are 2 switches Item 3 and Item 7 of this link:
http://www.toolpartsdirect.com/cgi-bin/noframes.cgi/blackdecker/MM600_TYPE_1

Places for a short are the power wire from the switch to the motor connection. (Item 28 of link)
http://www.toolpartsdirect.com/cgi-bin/noframes.cgi/blackdecker/MM600_TYPE_1

A broken motor brush where the carbon brush has broken off and the metal from the spring is now touching wither the motor chassis or across multiple segments of the armature.

Check items 46, 47, 48, 48 this link for damage:
http://www.toolpartsdirect.com/cgi-bin/noframes.cgi/blackdecker/MM600_TYPE_1

Also check Item 80 Brush of the above link (picture below link
http://www.toolpartsdirect.com/cgi-bin/parttools.cgi/242273-00

A bearing in the motor can have failed allowing the armature Item 65 of link to drag on the stator item 70 of link and cause a stator short where the armature damaged the stator winding.

The above items are all things that can cause your problem. It will take a multi-meter and some resistance checks of the circuit to isolate exactly where the short is.

I would connect the meter across the 2 power cord terminals i.e unplugged and simulate mower use then start disconnecting wires one at a time working my way backward from the motor to see when the short disappeared. If the short is in the motor... then we are back to all of the times above except the cord and switches. The all have to be isolated and checked out.

Kelly

May 02, 2010 | Black & Decker 19" Electric Lawnhog...

1 Answer

19.5 hp 917270810 starter making loud squeel


remove a plastic cover above or near the starter to access the gear and check the teeth on the gear.\
if it is chewed up replace gear or the complete top of starter assemly consisting of a clutch a gear and fastening components.
Starter will have to be removed to do this.
check the flywheel gear also to be sure its teeth are in good shape.
if gear is good move motor off of compression stroke and try again

Jun 14, 2009 | Craftsman 20 hp 42 in. Deck Yard Tractor

6 Answers

Black and Decker Electric Lawn Mower MM850 wiring diagram


I have repaired mines. It was found in the trash dump, just before street curb side trash collection. It is a very sophisticated lawn mower. It taken me a month to restore it. The problem is the housing is poor design and does not hold the pin switch securely. This is not a simple on/off switch. It is switch module with two momentary switches built in to it to work simultaneously. The hot is a normally open momentary switch and the neutral is a normally closed momentary switch. Two things must occurred simultaneously for the lawn mower to work. The AC hot has to close and the neutral to open. This is a split phase AC motor. The switch has four connectors to it. The first two has black wires to it, for the hot, that is normally open. The second two has a white wire and red wire to it for the motor's start up winding. The orange connects with the plug's white, neutral. A new substitute switch will be two individual momentary switch, one for the two black wires will be normally open and the two for the red and white wires from the motor start coil will be normally close. It will take two fingers to operate the lawn mower. I recommend you to buy a new and each switch from Black and Decker.
The problem with the system is not the switch, but the poorly designed switch box housing. Often, there is nothing wrong with the switch. I tested mines and it works fine. The problem is the switch box housing does not keep the switch in the correct position for the higher tension spring lever to press against it to operate. I use small washers to stack between the rear of the switch inside and reassembled the switch box upside down by turning the handle upside down, so the washers and switch do not fall out. Once I am finished assembling the switch box and position it on the handle, then I position the handle back to the normal top side and attach the handle back to the lawn mower. I am finished.
http://en.wikipedia.org/wiki/AC_motor#Split-phase_induction_motor

"Split Phase Motors
Split phase ac motors are widely used for low power applications as for example in oil burners, furnace blowers, garage door openers and major appliances. Such motors employ separate run and start windings connected in parallel across the acpower source. When the motor is initially energized both windings are energized, and when the rotor speed reaches about eighty-five percent of the normal running speed the start winding is disconnected from the circuit. Various devices are utilized forthis latter purpose and include centrifugal switches and current and voltage relays.

A problem which is characteristic of these motors is that they have a relatively short operating life. The principal reason for this is the failure of the switching devices used to cut out the start windings when the rotors approach the normalrunning speeds.Failure of these switching devices in turn cause the start windings to burn out.

One of the reasons for the failure of these switching devices is the high currents which they are carrying at the time the contacts open. Attempts to increase contact life by use of improved designs and materials have not been altogethersuccessful. Another disadvantage associated with these switching devices is that they are necessarily quite large and occupy a substantial space in the motor housing." -from another web site.

Feb 06, 2008 | Black & Decker 19" Electric Lawnhog...

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