Saving Old Seagulls

hello Nudge
i have changed to 4:1 some years ago
effectivly my spark wire doesn't fit it really good; it's moving all the time back and forth
but i don't know how to change it; maybe i'm gonna try to fix it
thanks for your advice
Nantes is in france, north west

i have try every gaps and screw position for like 3hours and half, but no effects...just at a moment the noise stopped...but the "bumps" restart 5 minutes later
so i am gonna try with a new plug, maybe the plug's gap isn't good anymore.

and the fact is that the first time the "bangs" occured it ...

hi Hugz
i have check the spark plug, i undo it so i could see the piston
it seemed a little bit darkened, and the hole seemed greasy too
maybe i'll sand the plug with 600grain
i m gonna take a plug from a spare forty plus and try with it.
are you sure the noise is coming from ignition, that it comes ...

the points are 0,5mm at their max, but it is when the piston is on top course, close to the spark plug, right?

the bus was too big for the flywheel anyway...

but i just try the motor again...
at first it doesn't start
then i realised that the ignition points wasn't 0,5mm when the cylinder was on top course, so i changed it 0,5mm at top course
then i turned the flywheel again
the motor starts first stroke ...

ok i have my criterium pen 0,5 jauge
thanks you all guys
you're the best

thanks for your advice , Hugz
i had checked those points once 2 years before, but effectively they have moved; the 2 points were touching each other
so i turned the screw in order to have a bus ticket thickness in between. i had forgotten those two little points!
i think those points touching each ...

what do you mean by checking points?
i'm sorry my english is quite poor....
it's sunny this morning and i am off working,
so i'm gonna try it on the water...

hi guys
i cleaned my carb yesterday
it was quite clean, except some metal particles i found in it
i don't know where it comes from
i hope that's not the rings!
i looked down the carb hole while turning the wheel, the 2 rings seemed ok
maybe i'll try to run it before unsealing the block,
what if ...

thank you Keith.P fort your quick answer,
i am going to do it this afternoon
but i will never did it again on the water
(i have already lost to much tools and carbs doing this! ;p)

hello
my seagull forty is running perfectly
excepting autumn leaves stopping the water pump sometimes,
or long grass making knots around the propellor, everything worked fine
until i noticed the carb was always leeking when the motor wasn't running.
i solved it by closing the fuel tap when i ...

hi, so when the engine stopped, the flywheel was hard to turn and a metallic noise was to be heard.
the engine was damned hot, and my waterway was full of rust.
so i clean it, put new copper gasket, new piston rings, with the good method (boiling the pin in hot water etc)
the cylinder block seems ok ...

hi seaguys
i thought i had repaired the litle forty by changing head and cancrase gasket after cleaning waterways, but the fact is that it was piston rings.
the motor goes well, a very nice quiet sound, but 15 minutes after, facing the lock, it weakened again. damned dancing rings!
well, i ordered ...

thanks for your advice!
i'll do as you say your a wise man.
i think thats gonna be even greater than before with my old little boat!

hi horsley!
how did you remove rust from waterway's holes?