I’ve gone thru three HD-25’s.
#1 was my best hope of a good running 2-1/2 hp Johnson,
as it has 77 psi compression top and bottom.
The other two have 65 ish compression, and just don’t
want to idle.
I’ve had the mag apart four times in the last couple of days.
First time I did have poor spark as I had the fiber washers
placed wrong on the "kill post".
At one point, the little outboard ran down in the slow range
nicely for a minute or so, but started running erratic.
I’ve tried the coil heel to magnetic rotor set at .008
and .012 as the manual says. I think spark jumping an
air gap was better at .008.
I had adjusted the points at .020 and called it good,
but yesterday I put at dial indicator in the plug holes
and hooked up a buzz box across the points to get
the two cylinders synced in their firing as close as I could.
It runs nice "Fast", but when you get down to the "Start"
area, it bogs out.
I’ve tried all combinations of setting the "Low" and "High"
speed needles. So far the best combination seems to
be about 1/2 turn open on each needle. I tried starting
out at the manual’s recommended 3/4 turn each, but
it ran way too rich.
This is the only one of the three HD’s that I replaced the
condensers with .20 uf "orange cap" capacitors.
All the carbs were "cleaned, probed, and blown out", etc.,
so I’m not sure what the problem could be.
The flywheel had no noticeable sideways movement.
I have an older HD-15 apart but not real hopeful
it will run any better!
Running out of my own ideas.
Suggestions welcomed. Thanks!
.
