Originally Posted by LanceB
Many thanks for the pdf
Timing light eh!!! perhaps I should stop at this point then as I don't have one of those..Sounds as though I need someone like youself on the case.
1 1/2 turns is what my owners manual said & this is what I had when it ran. What I don't get is that it was starting first pull & did again tonight then nothing at all even after going back to the 1 1/2 turns as before.
You can do ajustments while the motor is running, just keep your thingers off moving parts.
It looks like if you can start it, then timing is not the issue, as there is no load to the engine at idle. If you know factory setting for timing, I'd suggets to set it at that point for now. Timing could become an issue when you'll start runnung the motor on the boat.
Here what I thing is happening.
When you try firing up the engine, do you have the tiller arm throtle piosition on the "start" line or just fully closed (idle)?
It is is not on the start position, then it will not start (e.g. throttle butterfly is almost fully closed) as the air/fuel mixture is way to rich.
At first, your idle scre was way to much in, this was enough for throttle to be open and start the engine. Now, you seem to figure out how to slow down, but it wont start (as I understand).
Do this little test:
place the tiller throttle into the start position (a little bit open)
start the motor (pull coke out if the motor is cold)
idjust idle speed with the screw witht he motor running.
Keep motor running for few minutes. stop it and take the pugs out, as angin was only idling the plugs suppose to be darker colot then normal, dark chokolate, but not black. if they are black you either need to adjust mixture screw for little leaner.
You may also have out of spec spark plugs that may explain hard/impossible starts when warm. I'd put brand new plugs, just to eliminate the possibility that problematic plugs.