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  • Yanmar Tractors
    • 'YM' Series
      • YM1100
      • YM135
      • YM1300
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      • YM140
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      • YM186
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      • YM2010
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      • YM2210
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      • YM240
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      • YM250
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      • YM330
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      • GT14
    • 'F" Series
      • F14
      • F15
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      • F17 / FX17
      • F18 / FX18
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      • F22 / FX22
      • F24 / FX24
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      • F28 / FX28
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      • F42 / FX42
      • F165 / FX165
      • F215 / FX215
      • F255 / FX255
      • KE-2
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      • KE-4
    • CubCadet Yanmars
      • EX450
      • EX2900
      • EX3200
      • SX3100
      • LX410
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      • SC2400
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  • Deere Tractors
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Yanmar Tractors Deere Tractors General Items Marine Engines

'YM' Series

YM1100 YM135 YM1300 YM1301 YM140 YM1401 YM146 YM147 YM1500 YM1502 YM1510 YM155 YM1600 YM1601 YM1602 YM1610 YM165 YM169 YM1700 YM1702 YM1720 YMG1800 YM180 YM186 YM187 YM1802 YM1810 YM1820 YM1900 YM195 YM2000 YMG2000 YM2001 YM2002 YM2002 YM2010 YM2020 YM220 YM2200 YM2202 YM2210 YM226 YM2220 YM2301 YM2310 YM240 YM2402 YM2420 YM250 YM2500 YM2610 YM2620 YM2700 YM276 YM2820 YM3000 YM3110 YM3220 YM330 YM336 YM3810 YM4220 YM4300 GT14

'F" Series

F14 F15 F16 F17 / FX17 F18 / FX18 F20 / FX20 F22 / FX22 F24 / FX24 F26 / FX26 F28 / FX28 F32 / FX32 F42 / FX42 F165 / FX165 F215 / FX215 F255 / FX255 KE-2 KE-3 KE-4

CubCadet Yanmars

EX450 EX2900 EX3200 SX3100 LX410 LX450 LX490 SC2400 SC2450

JD650

JD750

JD850

JD950

JD1050

JD1250

JD655

JD755

JD855

JD955

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JD870

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1GM10

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  • Home/
  • Testing Your Starter

Testing Your Starter

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  • Testing Your Starter

So your starter is acting up and you are not sure what to do next.


The first thing you need to do is be sure the problem is your starter and not something else.
A malfunctioning starter may just be a symptom of another problem. It could be anything from a bad battery connection to a bad ignition switch or bad clutch safety switch. Here are some steps to eliminate some other potential problems.


Things to start with:

  • Is your battery fully charged? Seems obvious but we have to start somewhere right?

  • Do you have good connections at your battery and especially where the ground wire bolts to the frame. This is a common spot for a bad connection. Keep in mind that a bad connection may still allow low current circuits like your headlights to turn on but can still fail with higher draw circuits like your starter. One good test is to turn on your headlights and try to run the starter. If the headlights dim or go out then you have a bad connection or low battery.

  • So your headlights stay strong when you try your starter so now we need to check the actual starter.

  • !!!!!! WARNING !!!!! This step is dangerous so, if in doubt, call a professional. Put your PTO in neutral, put your transmission in neutral, and lower the throttle to the stop position. The LAST thing you want is for your tractor to fire up in gear at full throttle and run over you or someone else.

  • Note the labeling of the terminals in the diagram. Terminal 'A' will be the big terminal that does NOT have the wire going down into the starter motor itself. You can not just go by the position of the terminal! It will not always be on the left, for example. Terminal B is the small plug. Terminal C has the wire that goes down into the starter and terminal A is the terminal that the main battery wire goes to.

  • The main wire from your battery goes to terminal 'A' and from there a smaller wire goes up to the fuse box and the rest of the tractor. If your headlights come on then we know this terminal has power. Terminal 'B' is where the wire from your ignition switch attaches to. It is what tells the solenoid to engage and make the starter motor spin. You are going to touch a screwdriver (or other metal object) from terminal 'A' to the small terminal 'B' (basically fooling the solenoid into thinking it got a signal from the ignition switch to go to work).... (OK.. the solenoid is just a chunk of metal and does not really get 'fooled' but you get the idea... right?). If your starter is working correctly then you should get a small spark and the engine should start to turn over. If so, you know that the problem is NOT the starter and you need to work up stream to find the real problem (safety switch, ignition switch, broken wire, bad connection).

  • If your engine does NOT turn over when touching A to B (and your headlights do not go dim) then there is something wrong with the starter or solenoid. You can touch from terminal 'A' to terminal 'C' and listen for the starter motor to spin (the engine will not turn over though because the starter solenoid did not engage the drive gear into the engine). If the starter motor spins then it might just be a bad starter solenoid. We have both. Just give us a call!

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    2099 US Hwy 287 E
    Iowa Park, TX 76367
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