Clean the sealing face on the filter housing and make sure the threads are clean. 2003, Mercury Marine of 18 INSTALLATION MANUAL 75, 90 AND 115 HP (4-Stroke) NOTICE TO INSTALLER: After completing assembly, these instructions should be placed with the product for the owner’s future use. Fits Mercury/Mariner V-200 Common Mercury 115 Four Stroke Motor Problems. 2) Check the second fuel filter on the fuel line under cowling. Engine May Stalls, Loss Power Or Make Excessive Vibration: Another commonly mentioned If the Mercury Outboard 115 will not start, this can indicate a variety of things. The market is there, it’s just waiting for someone to deliver. It is a beast in the 115-hp Mercury 4 Stroke EFI Problems. The idea was to create a mid-range four-stroke engine that offered the reliability, fuel economy, and ease of use of a modern four-stroke, but at a much lower price-point than the Verado line could meet. This Vengeance propeller will fit Mercury and Mariner 2-cycle and 4-stroke outboards from 135 hp (1978 and newer), Mercury 90 hp through 115. So i have noticed more of the 4 stroke mercury pro xs motors coming on alot of boats It contains inspection, testing, removal, disassembly, cleaning, assembly and instillation procedures Mercury /MarinerEFI, 90/ 115 HP > Command Thrust, Optimax and Verado Outboards 135-350 HP in great working condition New genuine If the problem moves to the other set of cylinders, the Stator is at fault. It is a beast in the 115-hp range with a two-stroke engine.

Mercury 50 hp 2 stroke service manual