How To Test A Lawn Mower Solenoid




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Hexus Dominus: So basically here is the bottomline: For a 4 post Solenoid lets say Post 1 and Post 2 are the ones he is putting the batteries to test. These are the two posts that a black/purple wire clips on and off. You can pull those out easily on the mower. Next is Post 3 which goes to starter. Post 4 is directly connected to Positive of MOWER battery.

Test: Connect Post 3 with Post 4 directly - with a screwdriver or wire and see if starter cranks. If it does then both battery and starter is good. Lets assume starter and battery is good.

Case 1. With Key in ON position if you have 12 V across Post 1 and 2 (test with Multimeter) and starter wont start then you have a bad solenoid. As this guy in the video correctly explains you should have continuity between Post 3 and 4 when there is 12 V between Post 1 and 2. With a working solenoid this would mean a 12 V between Post 1 and 2 with key on ON - this would connect Post 3 with Post 4. Post 4 is live battery from mower and with continuity Post 3 would connect to 4 and would become live and start the starter. So with a bad solenoid you would have 12 V with Key ON and no continuity between Post 3 and 4.

Case 2. With Key in ON position if you DO NOT have 12 V across Post 1 and 2 this means Solenoid is not getting the power to close the switch or provide continuity between Post 3 and 4. This does not say anything about the solenoid. Could be good or bad. But tells you that you have problems elsewhere with 1. Loose connections. 2. Bad wires. 3. Bad Seat switch 4. Bad RIO switch. 5. Bad Brake/Clutch Switch 6. Bad IGNITION/KEY switch 7. Bad Blade Engagement Switch. Fix all those until you get 12V across the top posts of the Solenoid or Post 1 and Post 2.

Janine Montgomery: I have a Honda Harmony 2013 riding mower, unsure what year. Th battery is charged, hit the key, and it'll take 2 or 3 attempts to turn over. Once turned over, it turns slow for 2-3 seconds then started gear kicks down. Eventually it might start. Can anyone tell me what to check? thank you.

Mitchel List: how come my yard machine doesn't work without a jump start

Charles Martin: great job explaining this

billy ashley: i have a Poulan Pro Lawn Mower I have a 4 Pole starter solenoid are you supposed to have power on the black wires on the solenoid if not does that mean I have a short on the solenoid thanks Billy

DEE K: Which wire do you test on a 4-pole solenoid?
thx

josh brewer: j

Stan Wilson: What if you can hear the solenoid clicking does this mean its working are not?

Richard Reynolds: Thanks for a well presented video. My craftsman is dead as a door nail but now I have some help in finding the problem. Internet Intelligence!

iordanhs dometiou: Hi my lawn tractor runs for too minutes than dies

iordanhs dometiou: when I start my lawn tractor blades a sirine goes on can you help me thanks

iordanhs dometiou: hi my name is jordan I need same help

myrx2: solenoid not silenoid!!!!!!

Finn Campeau: Thé i bost it with m'y truck it wrked but barleyy

firstname lastname: how freaking hard is it to pronounce solenoid properly?

Finn Campeau: So i néed help

Finn Campeau: My tractor battariry is dead but i Bost it thén Bost my other tractor and That ont Works

Lawrence Holman: I have a craftsman lts1500 Briggs &Stratton 17.5 hp. I've clean just about everything possible but the mower will only run on high. The throttle has to be half way to start. Have you or anyone self run into this problem?

DrMcShotgun: I can't fix it I'm stillannoyed ;)

HollywoodMGB3: What if you get less then 12 volts through wire like 9. ?.......I have good battery test, good power lead to solenoid. Also no power through solenoid to starter. Thanks in advance
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How to test a lawn mower solenoid