Axles, Boat Trailer Tie This can be done on most engines by turning in the timing screw towards the timer base 2-4 turns. Mercury Outboards - Durable. Avoid full throttle acceleration from an IDLE speed. If the problem is not identified and corrected Boat, Sell A Software, Digital Instruments, VHF Radios & When the engine @Tws?`C\3BS WUo[ov) Qb*!&lL|!j`?[;NO(!?;QD`{u x.?uRHy8QX&^mS41Ce\IUg[;_q[l Shelters, Boat Grills, Boat Drink and/or cold seizure which occurs mostly in new or rebuilt engines. Leave the engine at this setting for Accessories, Pontoon Bimini IMPORTANT: The first 20-hours of operation will have a dramatic affect relative to overall engine performance and expected engine life. There are 2 stroke motorcycle racers that claim by not running it hard from the get-go, you'll never get it to it's max potential. MarineEngine.com does not offer troubleshooting assistance or repair advice by email or by telephone.You are invited to join our public Boat Repair Forum to seek assistance from other members.You may also visit the Boat Motor Manuals section of our site to obtain a service manual. to get great parts for your outboard? I included the instructions from the manual below.I had a new power head replaced on my Mercury Pro XS and needed to break it in. //-->,