troubleshoot gt 275

[jesse43]

Hi, i currently own a john deere gt 275 mower and am having trouble with it starting. I first thought it was the starter or the solenoid so i changed the solenoid and it worked a few times then stopped again . when i turn the key nothing happens but if i jump the terminals on the starter and solenoid it starts right up. what do you think i change next? ignition?

 

[beenthere]

Not getting a clear picture of what is happening.

What happened when you thought it was the starter? (ok, it didn't start.. ). Wouldn't turn the engine over when you turned the key? Turned it over slow but not enough to start?

Likewise, what was your reason for changing the solenoid?

How old is the battery? Have you cleaned the battery connections and the ground wire connection?

With the plug out, will the starter turn the engine over? Do you get spark when grounding the plug while turning the engine over?

:welcome: to TBN

 

[whis]

if you can jump the starter it means its doing its job, check switch, wires,fuses

 

[jesse43]

yes it runs fine after it started.When i turn the key nothing happens...lights on dash come on but will not start. It did blow one fuse but changed it and still nothing

 

[swines]

There are two safety switches as part of the starting circuit. One is the seat switch and the other is the brake switch. You need to check those switches to make sure they are functioning. If either switch is not working, it will not start with the key switch.

If you can start it and it runs without weight on the seat, then the problem could be the seat switch. The brake switch you will have to look at with a meter to see if it is working (open/closed status works properly).

If those switches checkout correctly, it could be the key switch. I have had to replace the key switch on my GT275 as it made intermittent contact when turned to the "start" position. You can trouble shoot that with a meter by looking at the contacts on the switch and wiggling the key with the key turned to "start." When you wiggle the key, it will show intermittent continuity - this means the internal switch contacts are worn.

 

[JD420]

I have ran into the connector becoming corroded on the ignition switch numerous times. Unplug the switch and check any type of corrosion in the connector, and on the terminals on the switch.