2019. I just brought home a 1981 John 400 today. The previous owner worked at Kohler and restored the entire tractor about 5 years ago. A couple years ago he said he put a brand new Kohler K532 Engine. Not a rebuilt one AMMETER AND HOURMETER [A23] 400 Hydrostatic Tractor part catalog John …John 400 420 430; John 400 420 430. Products [71] Sort by: 1 2 3 Next Page View All. Quick View. Sunshade Fits John 300 and 400 Series Tractors (0) $200.85. Add To Cart. Quick View. Hard Top Cab Enclosure Fits John 318 …Download COMPLETE Service & Repair Manual for JOHN 400 HYDROSTATIC TRACTOR. An old style automotive timing light will help you get the timing spot on. It's also easy to be off a tooth. You may also find that the Kohler likes the points set more like .016-.018 rather than the .020 spec.The ROP Shop 26x12-12 Tire Chains,