How do i time my 75hp mercury outboard using the flywheel?

Question

the manual states that I should use a dail indicator if my flywheel isn't marked however, my flywheel has timing marks so could someone please tell me how to time it using the marks on the flywheel? Its a 75hp mercury outboard two stroke four cylinder engine. It lacks power on take off, but gradually picks up speed as I move along.

Answer 1

You need a timing light. Get one of your pistons to Top Dead Center. This is when the piston is at its peak just before going back down. Clamp connectionof timing light on spark pluig wire of piston at top dead center. Start engine, aim timing light at arrow that should point to flywheel marks. If light lights up at the arrow and you timing lightmarks are there it is in time. Note there is low speed and high speed timing marks.

Answer 2

you shouldnt  it self adjusts

Answer 3

Start with what Rondo said.  Then take a close look at the distributor.. You'll notice that it moves as the throttle is advanced.  There are two screws that limit the movement.  There is a locking nut to keep it in place.  With the engine running, adjust the screws one at a time until your in spec.  I wouldn't be surprised it the engine is in time. I'd look to carb. , fuel, and linkage adjustments.

Answer 4

Let's don't overlook the obvious here- it sounds exactly like a prop that is pitched too high for the boat it is on-slow on take off but increases speed as it gradually winds up- Look at the pitch numbers on the prop- get one about two sizes lower-borrow it for a trial run- if that is not possible, call a prop shop or dealership, tell them the situation, and give them the pitch of the prop- tell them what size boat you have it on, and ask them if you are over-pitched with you prop- the right pitch for your boat makes a world of difference in the performance of it.  You can get a prop shop to change the pitch of your current prop, if that is the problem. Good luck!

Answer 5

Unless you have had the stator assy off the motor, or have been adjusting the stator linkage, they never go out of time.  Depending on what kind of manual you have, in the fuel section, it should give you the sequence to set up the linkage and carbueration. I'd go there first.