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John Deere LA145 wont turn over no power

#1

TeamINF

TeamINF

Ok so my rider wont turn over at all no click nothing...
I have tried the following:
Changed battery
Changed solenoid
Fuse is good
Check for continuity on both sensors/safety switches they are good
Checked also ignition plug, pto all are good
My cables are good too

Only thing i haven't done yet is change fuel and air filter..but could that be why it wont turn over? I am so lost please help!


#2

M

mechanic mark

Was battery new, charged up, ready to go? Check oil level on dipstick, how does it look? Do you have a multimeter to check battery voltage? Also check ignition switch at backside of dash for rust & corrosion.


#3

TeamINF

TeamINF

Battery is brand new and charged up. Oil level is good. I have a muiltimeter and check the battery its good. I pulled out ignition switch and teated it with multimeter it beeped in all the right places. Still i get nothing the dash reads nothing and no turn over or engagement at all. Am i missing something? The fuel filter is really dirty could that cause it not to engage or turn over at all? I inspected the wiring nothing melted or ruined..


#4

B

bertsmobile1

Obviously some thing is not good so please do the following and report back
Grab the jumpers from your car boot and jump from the battery negative to a good ground on the engine ( drain bolt is usually a good place ) .
Cranks fine = bad ground strap
No difference the hook the other jumper from the + on the starter motor then to the + on the battery
Engine cranks = faulty wiring
Engine does not crank = bad battery or bad starter
Repeat all of the above with a know good battery like from your car

BEcause the JD technical manuals are so well written & so comprehensive , particularly in the way they describe how to test the electrical system & where to test the system I always recommend owners buying them.
COnsidering the price is only a couple of hours of the technicians billing rate they are dirt cheap .


#5

S

slomo

Key in cranking position, do you have 12 volts at the solenoid? Does the solenoid click when you turn the key to the starting position? Hand on solenoid to feel for a click, turn the key to START position. What do you have? Mice in the garage eating your wires?

slomo


#6

TeamINF

TeamINF

bertsmobile1 said:
Obviously some thing is not good so please do the following and report back
Grab the jumpers from your car boot and jump from the battery negative to a good ground on the engine ( drain bolt is usually a good place ) .
Cranks fine = bad ground strap
No difference the hook the other jumper from the + on the starter motor then to the + on the battery
Engine cranks = faulty wiring
Engine does not crank = bad battery or bad starter
Repeat all of the above with a know good battery like from your car

BEcause the JD technical manuals are so well written & so comprehensive , particularly in the way they describe how to test the electrical system & where to test the system I always recommend owners buying them.
COnsidering the price is only a couple of hours of the technicians billing rate they are dirt cheap .
Click to expand...
Ok thanks! Going to try this once it stops pouring out!


#7

TeamINF

TeamINF

slomo said:
Key in cranking position, do you have 12 volts at the solenoid? Does the solenoid click when you turn the key to the starting position? Hand on solenoid to feel for a click, turn the key to START position. What do you have? Mice in the garage eating your wires?

slomo
Click to expand...
Ok i havent felt for a click on the solenoid only listened..will try and report back...no chewed on wires that I can see although mice are possible


#8

TeamINF

TeamINF

TeamINF said:
Ok thanks! Going to try this once it stops pouring out!
Click to expand...
slomo said:
Key in cranking position, do you have 12 volts at the solenoid? Does the solenoid click when you turn the key to the starting position? Hand on solenoid to feel for a click, turn the key to START position. What do you have? Mice in the garage eating your wires?

slomo
Click to expand...
Only about 8 volts reading solenoid not clicking...could it be a bad voltage regulator?


#9

S

slomo

TeamINF said:
Only about 8 volts reading solenoid not clicking...could it be a bad voltage regulator?
Click to expand...
8 volts is a dead battery or poor cables and a bad ground.

Voltage reg has nothing to to with starting the engine.

slomo


#10

O

olie01

jump between the two heavy connects on solenoid starter should turn. clean connectors on safety switches. neutral brake sw. is on top of transmission. If it has a PTO sw. and ignition sw. put voltmeter on battery when turning the key see if it drops when you turn to start, if not jump wire or screw driver from the hot post on solenoid to the starter post, the small one and see if it cranks. have same problem on my 170.


#11

G

Gord Baker

bertsmobile1 said:
Obviously some thing is not good so please do the following and report back
Grab the jumpers from your car boot and jump from the battery negative to a good ground on the engine ( drain bolt is usually a good place ) .
Cranks fine = bad ground strap
No difference the hook the other jumper from the + on the starter motor then to the + on the battery
Engine cranks = faulty wiring
Engine does not crank = bad battery or bad starter
Repeat all of the above with a know good battery like from your car

BEcause the JD technical manuals are so well written & so comprehensive , particularly in the way they describe how to test the electrical system & where to test the system I always recommend owners buying them.
COnsidering the price is only a couple of hours of the technicians billing rate they are dirt cheap .
Click to expand...
NEVER jump a lawnmower from a Car. You could destroy the Charging system. Check Lawnmower Negative ground connection to frame. It should be shiny and tight. Attach + battery side to Starter electrical lug with one cable. No open fuel around.


#12

S

slomo

Gord Baker said:
NEVER jump a lawnmower from a Car. You could destroy the Charging system. Check Lawnmower Negative ground connection to frame. It should be shiny and tight. Attach + battery side to Starter electrical lug with one cable. No open fuel around.
Click to expand...
You could also weld the + cable to the solenoid.

slomo


#13

B

bertsmobile1

Gord Baker said:
NEVER jump a lawnmower from a Car. You could destroy the Charging system. Check Lawnmower Negative ground connection to frame. It should be shiny and tight. Attach + battery side to Starter electrical lug with one cable. No open fuel around.
Click to expand...
Rubbish
Car battery , truck battery, jump start pack, 1000 pen light batteries.
All the same and none will do anything to your charging system unless you connect them backwards in which case you usually blow the fuse in which case the charging system is isolated.
An URBAN MYTH perpetrated by people who were asleep during physics class at high school.


#14

B

bertsmobile1

slomo said:
You could also weld the + cable to the solenoid.

slomo
Click to expand...
Really ?
Some time Slomo I do wonder about you.
This can only happen if there is a dead short in either the solenoid or the starter motor, in which case you will get a monumental spark when the leads are connected.
And funny enough that usually causes people to pull back rather than push on and force the leads onto the terminals


#15

Craftsman Garage

Craftsman Garage

can you turn over engine with your hand?


#16

M

mechanic mark

bertsmobile1 said:
Rubbish
Car battery , truck battery, jump start pack, 1000 pen light batteries.
All the same and none will do anything to your charging system unless you connect them backwards in which case you usually blow the fuse in which case the charging system is isolated.
An URBAN MYTH perpetrated by people who were asleep during physics class at high school.
Click to expand...
I love that word bertsmobile1, RUBBISH ! Happy Fathers Day To All Dads Sunday! GOD Bless & stay safe to all!


#17

TeamINF

TeamINF

slomo said:
8 volts is a dead battery or poor cables and a bad ground.

Voltage reg has nothing to to with starting the engine.

slomo
Click to expand...
Replaced battery so now the solenoid clicks but wont crank on Im thinking a bad wire or connection somewhere


#18

M

mechanic mark

Check air filter for replacement, fresh gas, good spark, compression, replace fuel filter if dirty, check all wiring for being tight & secure, Let us know how it goes, thanks, Mark
Check your Engine Operators Manual for settings on intake & exhaust valves & check when engine is cold. If valves are adjusted too loose, compression release on camshaft will not hold exhaust valves open assisting in starting. Post all numbers from engine: model xxxxxx, type xxxx, trim xx & code: engine.


#19

B

bertsmobile1

TeamINF said:
Replaced battery so now the solenoid clicks but wont crank on Im thinking a bad wire or connection somewhere
Click to expand...
If you can rotate the engine by hand
Get a pair of jumper leads .
Hook one to the battery - then to a good ground on the mower, I like to use the oil drain plug
Turn the key
Engine cranks = bad ground connection
Engine does not crank then put the other lead on the power wire on the starter then touch it to the battery +
engine cranks = starter is good, solenoid or power cables are bad.

Engine does not crank, battery bad, try again with a known good battery like your car
Engine trys to crank but can not, remove the spark plug & repeat
Post they results


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