You will need a manual for a 110.982 engine and if your 280 is the same as mine (Euro) and you have Bosch D-jet injection you will need a manual with Section 7.4.2 (not easy to find) that covers the D-jet. Also go to http://www.icbm.org/erkson/ttt/engine/fuel_injection/d-jet.html covers the D-jet in detail.