Easy to install, the manual is not inlcuded, However, You may search some manual on tube. The only thing they need to change is one of the gasket that is included needs to be the one between carb and air filter housing. After installation, It instantly fires up, Your Powerful mowers & Equipment deserve A Perfect Carburetor Replacement For Briggs & Stratton 699831 694941 499158 499163 modelsReplaces Part Number: 699831 ,694941Compatibility:Briggs & Stratton 699831 694941 499158 499163 21A907 0124 E10310312AUsed on Some Model Series (NOT ALL)- email your model & type number to us if you are not absolutely sure this is the right part for you286702, 286707, 28R707, 28D702, 28D707Also Used on Some Models 283702, 283707, 284702, 284707, 284777, 28M707, 28M706, 289702, 289707, 28V707, 28T707Also Used on Some Models 28B702, 28B705,28B706, 28B707 28D707