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Reversed polarity on GX390

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mmenezes New Member Total Posts : 1 Scores: 0 Reward points: 0 Joined: 2023/11/26 20:48:25 Status: offline 2023/12/01 23:47:32 (permalink) 0 Reversed polarity on GX390 I have a Landmaster TW-400 UTV with Honda GX390. An idiot installed a new battery with anode on the wrong side. Another idiot (me) attached charger cables, essentially reversing polarity and left it on for several hours. Now the engine cranks but produces no spark. It’s not the spark plug or the oil sensor. Assuming the ignition coil is OK (I’ll confirm tomorrow) what do I check next? Quote #1 1 Reply Related Threads
SRTsFZ6 Super Member Total Posts : 2031 Scores: 74 Reward points: 0 Joined: 2018/11/18 07:20:58 Status: offline Re: Reversed polarity on GX390 2023/12/02 07:53:25 (permalink) 0 Generally, the coil works or it doesn't. That is, with all safety switches disconnected for testing purposes. Un-plug the thin, black kill wire from the coil and re-test looking at the spark plug for spark, grounded to the head. . Scott Quote #2

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mmenezes

New Member

Total Posts : 1
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Joined: 2023/11/26 20:48:25
Status: offline

2023/12/01 23:47:32 (permalink)

Reversed polarity on GX390

I have a Landmaster TW-400 UTV with Honda GX390. An idiot installed a new battery with anode on the wrong side. Another idiot (me) attached charger cables, essentially reversing polarity and left it on for several hours. Now the engine cranks but produces no spark. It’s not the spark plug or the oil sensor. Assuming the ignition coil is OK (I’ll confirm tomorrow) what do I check next?

Quote #1

1 Reply Related Threads

SRTsFZ6

Super Member

Total Posts : 2031
Scores: 74
Reward points: 0
Joined: 2018/11/18 07:20:58
Status: offline

Re: Reversed polarity on GX390 2023/12/02 07:53:25 (permalink)

Generally, the coil works or it doesn't.

That is, with all safety switches disconnected for testing purposes.

Un-plug the thin, black kill wire from the coil and re-test looking at the spark plug for spark, grounded to the head.

.

Scott

Quote #2

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