Gator 620i Kawasaki Engine Unavailable? - John Deere Gator Forums
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post #1 of 6 Old 12-09-2019, 03:21 PM Thread Starter
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Gator 620i Kawasaki Engine Unavailable?

Hello! We are working on a 2008 JD Gator with the Kawasaki FD620D engine, Fuel Injected. The complete engine number is FD620D-CS26. The E/NO: FD620D472505.

The engine was pulled from the gator for customer complaint of excessive blue smoke, running on one cylinder. He is asking us to replace the complete engine.

John Deere's complete engine part number is MIA12905. This number comes back as "unavailable" when we tried to order. Their tech support system suggested ordering part number "AUC17164." We assumed this would be a complete engine, but it showed up as only a short block consisting of a block, crank, rods/pistons, assembled.

I tried calling Kawasaki small engine support number, and the tech support person refused to talk to me. He said John Deere bought all the rights from Kawasaki for these engines, and he has no information to share. When I called our local dealer, they suggested calling Kawasaki direct. Sigh.

Has anyone ran into this problem? It seems like John Deere is dropping support for this fuel injected engine. We recently purchased a complete carburetor-fueled engine for a newer gator with no trouble. Are these engines troublesome enough that they don't provide them anymore as a complete engine? It seems like nobody wants to say what's going on, and we're left in the dark.

Any information would be helpful. I'd like to avoid piecing together an engine with this new short block using our heads & fuel system, as I suspect issues with this fuel system since this gator has ran so poorly for years....hesitating, stumbling, hard-starting, and massive issues with fuel dilution in the engine oil.

Thank you...Nate
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post #2 of 6 Old 12-09-2019, 06:08 PM
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Nate,

Looking at JDParts, it is very clear the part substitute PN is only a short block. See attachment. JD has no right to call this a substitution as it clearly is not a substitute for the complete engine.

If you consulted with your local dealer I'd be taking the issue up with them.

It doesn't surprise me that Kawasaki doesn't want to help. JD strategically requires their suppliers to adhere to very strict supplier business rules requiring all replacement work and support to be through JD. They have done this to effectively reduce competition and to protect the very profitable replacement parts business. This allows them price freedom and disregard quality or lack of meaningful warranties.

Wish you the best of luck coming to a satisfactory resolution.
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2012 JD855D OPS Black Poly Roof, Deluxe Cargo Box, Front and Rear Protection, Power Lift, Front Hood Rack, Rear Screen (homemade), 800 Watt Inverter, 2500lb Winch installed in cargo bed, Front and Rear LED auxiliary lighting (4" square 27 watt), Front and Rear CV Guards, Koplin Side Mirrors

Last edited by 200mph; 12-09-2019 at 07:01 PM. Reason: Incorrectly referenced Yamaha and not Kawasaki
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post #3 of 6 Old 12-09-2019, 06:39 PM Thread Starter
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Originally Posted by 200mph View Post
Nate,

Looking at JDParts, it is very clear the part substitute PN is only a short block. See attachment. JD has no right to call this a substitution as it clearly is not a substitute for the complete engine.

If you consulted with your local dealer I'd be taking the issue up with them.

It doesn't surprise me that Yamaha doesn't want to help. JD strategically requires their suppliers to adhere to very strict supplier business rules requiring all replacement work and support to be through JD. They have done this to effectively reduce competition and to protect the very profitable replacement parts business. This allows them price freedom and disregard quality or lack of meaningful warranties.

Wish you the best of luck coming to a satisfactory resolution.
Hi there. I used JDparts to come up with the original engine part number, but after hearing from our dealer that it was NLA, I left it up to them to deal with the availability issue. When they came up with the sub number, I didn't even bother looking it up in JDparts. I assumed it was a sub number pointing to a complete engine. I agree - this isn't a substitution for a complete engine.

I'm interested in seeing if this engine has given others trouble. I've looked around on various forums for issues with this engine, and I'm wondering if there is a common enough problem that JD washed their hands of it as a complete engine?

Yeah it's frustrating dealing with "company" people who aren't allowed to discuss things that aren't clearly spelled out for them on a page. Sigh.

Thanks for the input.
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post #4 of 6 Old 12-10-2019, 11:03 AM
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Gator 620i Kawasaki Engine Unavailable?

Check online at supply.parts a member on this forum has found many parts for his 6x4 Gator at a great savings.


https://supply.parts

Also check with the Gator Guy at the thegatorguy.net

2012 Gator 825i (new engine at 1700 hours) Power Steering-Sport Exhaust- Deluxe Cab-Heater- Work Lights On Top Front And Rear- Hella HID Driving Lights-Warn ProVantage 4500 synthetic winch-Electric Dump- Gillmore Seat Covers

Last edited by Bradhill; 12-10-2019 at 01:03 PM.
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post #5 of 6 Old 12-12-2019, 08:33 PM
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Actually, these engines are really tough and reliable...as long as the cooling system is maintained properly. They're hard to bleed properly and any loss of coolant results in an overheated engine. If the operator ignores that little red light on the dash just to get it home that becomes an engine issue. I believe that's why JD went air-cooled on the next generation 6x4. On the plus side, parts for the fd620d are readily available for a rebuild and the rebuild is relatively simple.

As an alternative, a B&S 23hp Vanguard air-cooled engine drops right in and eliminates that pesky cooling system. It requires a bit of modifications for the muffler, air cleaner and throttle and choke cables. I had one of these and found it to be very suitable for the 6x4. Good luck.
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post #6 of 6 Old 12-13-2019, 06:34 PM Thread Starter
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Originally Posted by Cheapsnake View Post
Actually, these engines are really tough and reliable...as long as the cooling system is maintained properly. They're hard to bleed properly and any loss of coolant results in an overheated engine. If the operator ignores that little red light on the dash just to get it home that becomes an engine issue. I believe that's why JD went air-cooled on the next generation 6x4. On the plus side, parts for the fd620d are readily available for a rebuild and the rebuild is relatively simple.

As an alternative, a B&S 23hp Vanguard air-cooled engine drops right in and eliminates that pesky cooling system. It requires a bit of modifications for the muffler, air cleaner and throttle and choke cables. I had one of these and found it to be very suitable for the 6x4. Good luck.
Based on my research, we're dealing with the fault of a poor EFI design involving a troublesome throttle body assembly that causes the engine to run poorly, run on 1 cylinder, and run rich. The original throttle body assembly subs two times. The only coolant issue this machine has had is a failed coolant temp fan switch.

Parts for this engine are very costly from John Deere. I'm looking at a $1900 bill for random parts to rebuild this engine, $3,200 for a short block, and all of this is reusing the original cylinder heads. Ouch.

I'm guessing the Briggs wouldn't play nicely with the factory wiring...etc...and we would need to come up with a suitable clutch that would match the original. I called smallenginewarehouse, and they don't have a conversion kit for this model.

The job is on hold for the time being due to cost.
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