PatH
New member
Mine may have been an extreme case but it virtually would not start below 40 degrees F. It would not fire until the hydraulic oil was warm enough to allow it to turn-over very fast. I tried the following with very little success before the new coils.
1. magnetic heaters at various mounting locations.
2. starting fluid.
3. battery charger on full time when not running.
4. "Hotter" spark plugs.
5. Heavy duty Robin starter.
6. 5W-30 Mobil 1 oil for hydraulic fluid (ouch was that expensive).
None of that was very helpful. Placing magnetic heaters directly on the pumps would normally get it started at temperatures slightly below freezing. Since replacing the coils I have had no problems starting it near 0 degrees.
While I realize that you may not have coils with the bad serial numbers, if the tractor sounds like it is turning over fairly well and the plugs are wet from fuel after some cranking it must be inadequate spark. That means the coils or the spark plugs. If you've already tried new spark plugs I'd think it would worthwhile to try the new coils. I think the coils are especially suspect on the Robin as they contain electronics that vary the timing for "easier" starting. If something in there is failed it could likely make for the more difficult starting.
1. magnetic heaters at various mounting locations.
2. starting fluid.
3. battery charger on full time when not running.
4. "Hotter" spark plugs.
5. Heavy duty Robin starter.
6. 5W-30 Mobil 1 oil for hydraulic fluid (ouch was that expensive).
None of that was very helpful. Placing magnetic heaters directly on the pumps would normally get it started at temperatures slightly below freezing. Since replacing the coils I have had no problems starting it near 0 degrees.
While I realize that you may not have coils with the bad serial numbers, if the tractor sounds like it is turning over fairly well and the plugs are wet from fuel after some cranking it must be inadequate spark. That means the coils or the spark plugs. If you've already tried new spark plugs I'd think it would worthwhile to try the new coils. I think the coils are especially suspect on the Robin as they contain electronics that vary the timing for "easier" starting. If something in there is failed it could likely make for the more difficult starting.