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17.5 Intek Head scratcher!!

#1

Michael72

Michael72

Howdy folks

Having one of those days!!... have a John Deere with a 17.5 on board with some minor jobs needed, now :).....

Mower sounded a little rough and hard to turn over so I went to valves and adjusted as battery was given me a healthy reading.

It is still hard to turn over so I go to solenoid with power coming in at 12v ish, Out reading to starter only gives me a reading of 4/5...when powered on bench the solenoid has continuity with click :)...

Never had a solenoid go weak always just go completely.....is it possible???.....any advise much appreciated:confused3:

Edit : If I jump the mower it will fire up and will continue do so while in use....but leave for an hour or so it wont....also I checked battery when running and its at 13.3 ish so charging i guess...if I cross terminals on solenoid it still wont turn starter enough.

Michael


#2

M

mechanic mark

Post all numbers from engine: model xxxxxx, type xxxx, trim xx, code xxxxxxx.

https://www.briggsandstratton.com/us/en/support/manuals/results?NTT=31g777-0120* manual & parts

http://www.ccdist.com/_serviceManuals/briggs/276781.pdf repair manual


#3

Grassbandit

Grassbandit

Michael72 said:
Howdy folks

Having one of those days!!... have a John Deere with a 17.5 on board with some minor jobs needed, now :).....

Mower sounded a little rough and hard to turn over so I went to valves and adjusted as battery was given me a healthy reading.

It is still hard to turn over so I go to solenoid with power coming in at 12v ish, Out reading to starter only gives me a reading of 4/5...when powered on bench the solenoid has continuity with click :)...

Never had a solenoid go weak always just go completely.....is it possible???.....any advise much appreciated:confused3:

Edit : If I jump the mower it will fire up and will continue do so while in use....but leave for an hour or so it wont....also I checked battery when running and its at 13.3 ish so charging i guess...if I cross terminals on solenoid it still wont turn starter enough.

Michael
Click to expand...


That's certainly a head scratcher, I'd start with a check and make sure that all your electric connections are clean and properly attached.
Last time I had that happen it turned out to be a fuse in line with the alternator at fault. Once I replaced it then everything was fine.
Do post some pictures so we can see your machine.


#4

Michael72

Michael72

mechanic mark said:
Post all numbers from engine: model xxxxxx, type xxxx, trim xx, code xxxxxxx.
Click to expand...

Model 31G777 Type 0120E1 Code 040917ZE

I Have 12v at batt terminal and 12v coming from dash


#5

Michael72

Michael72

Grassbandit said:
That's certainly a head scratcher, I'd start with a check and make sure that all your electric connections are clean and properly attached.
Last time I had that happen it turned out to be a fuse in line with the alternator at fault. Once I replaced it then everything was fine.
Do post some pictures so we can see your machine.
Click to expand...


Yep its driving me nuts :biggrin: one of these handy jobs that turned into an all day thing!!....no spare solenoid to cross check


#6

Michael72

Michael72

Few pics Grassbandit

http://i1124.photobucket.com/albums/l562/Fox7239/j Deere/john 1_zpsvtjf8ixb.jpg

http://i1124.photobucket.com/albums/l562/Fox7239/j Deere/john 2_zpsyuoa533g.jpg

http://i1124.photobucket.com/albums/l562/Fox7239/j Deere/john 3_zps8mmtokn1.jpg


#7

S

SeniorCitizen

Seriously consider having the battery load tested.


#8

Michael72

Michael72

SeniorCitizen said:
Seriously consider having the battery load tested.
Click to expand...

Cheers will do.....I think under 9.5 is a fail under starting load?


#9

M

motoman

Long shot try reisitance check of solenoid, if poss, with solenoid switch engaged without power. (imposs?), or voltage drop accross solenoid when switched. Should be low if any ohm and ? .500mV- 1 V drop? I'm winging it. Switches can become corroded , worn of cladding, etc. Substitute solenoid (without buying it).:2cents:


#10

Michael72

Michael72

motoman said:
Long shot try reisitance check of solenoid, if poss, with solenoid switch engaged without power. (imposs?), or voltage drop accross solenoid when switched. Should be low if any ohm and ? .500mV- 1 V drop? I'm winging it. Switches can become corroded , worn of cladding, etc. Substitute solenoid (without buying it).:2cents:
Click to expand...

Thanks will try it....late here....clean sheet tomorrow lol.....Not a major fan of this wiring :confused2:


#11

Michael72

Michael72

Results are in :biggrin:

I had tried a second battery that was a relatively new and had the same complaints and thats when the scratchin started!!....so I done a load test as advised by SeniorCitizen and both batts failed!!! The new ish batt I had was a dud.... lesson learned and thanks for replys and SeniorCitizen.


#12

B

bertsmobile1

You did load yes them after they had been recherged didn't you ?
Common play by dishonest battery merchants is to stick some ones 1/2 charged battery on the carbon pile.
"see the machine says its bad, got agreat deals on these,,," .
When you did your voltage drop at the solenoid, did you have the starter disconnected ?

Next check all of the wires for corosion & tightness.
As you are in Ireland that has the opposite plroble to us down here ( way too much water ) good chance that the wires have corrosion inside the terminals causing a big power loss and don't forget the earth.
Try using a pair of good jumper leads hooked directly the the engine .
Neg to the oil drain then the pos in a couple of spots ( solenoid input terminal , solenoid output terminal , sarter terminal ) and note any major differences.


#13

T

Tinkerer200

" If I jump the mower it will fire up and will continue do so while in use....but leave for an hour or so it wont....also I checked battery when running and its at 13.3 ish so charging i guess...if I cross terminals on solenoid it still wont turn starter enough."

Charging OK. Your symptoms suggest bad connection OR cable. I would use a good set of jumper cables and just use one side of it at a time to jump directly to the engine with ground, then to starter with positive. While you may have 12V at the starter solinoid, cable/connection may not be capable of carrying enough amperage.

I once had a similar problem, turned out the positive battery had been spliced under the mower out of sight and the spliced connection was failing leaving an intermittent starting condition.

Walt Conner


#14

Michael72

Michael72

I made the mistake of not checking batt under load and also the second batt that was new.....second "new ish" batt was a dud and thats whats threw me off....both only gave me a reading of 4/5v under load, major fail :).....silly mistake as all wiring was fine and when i jumped and ran mower for 5min or so it would would start from key until batt died again...V increased when mower was running so no charging issues... Duh :)


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