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post #1 of 3 Old 06-19-2018, 11:23 AM Thread Starter
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15 Crew Diesel Slow Acceleration

I recently purchased a 2015 ranger crew diesel on auction for 5600. It has 830 hours on it but I noticed the engine and the clutches have 2017 manufacturing dates on them. It is a little slow to engage the clutch (1800 rpm) but I have heard that might be normal. My main issue is I basically have to floor it to get up to 30 mph even then it probably takes 20 seconds. Is this normal and is there anything I can do to improve the acceleration? When it gets up to that speed I have to keep it floored at 3200 rpm to keep it at that speed.
Thanks in advance for any advice
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post #2 of 3 Old 06-17-2019, 09:26 AM
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Mine is a 2016 crew with a brand new engine and tops out at 25mph. I’m running 30’s with no gear reduction. In the sand it over heats.
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post #3 of 3 Old 07-17-2019, 06:15 AM
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Newer engine and clutches isn't a surprise on a Kohler engine, they've had teething issues.

They do engage at higher rpms than most other machines, because that's where the engine starts making power, which is also why they are hard on clutches and belts... But once it's going it should pull nicely and smoothly.

Make sure your getting full rpms, 3750-3850 if not adjust all the Freeplay out of the cable, you can also modify the pedal slightly to get a little more, don't go crazy, 4100 is the limit if you lots of flat out running. Tweaking the fuel screw on 1-1/2 turns helps too, just don't tell the emissions people lol.
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