1953 evinrude big twin tune up help

[scot]

1953 Evinrude big twin 25hp . dry stored unused since 1961. replaced coils, points, condensers and cleaned carbs. will not start . backfires loudly but no start. what do I do next? Carb settings should be what? points .20.

 

[racerone]

Switch plug wires !

 

[boobie]

Flywheel key installed ??

 

[oldboat1]

Try initial settings 1 1/2 open for the idle screw, and 1 open for the h.s. If it runs, let it warm up then adjust settings.

Water pump service is always a first priority for a stored motor.

 

[F_R]

Too much gas (flooded) can make it backfire too. Too rich to fire, the gas is expelled into the exhaust housing, where it can be ignited by a cylinder pop and explode with a bang.

You sure you have the points set correctly? I suppose you held the cam down, right?

 

[racerone]

If flywheel key is missing there likely will be no spark at all to make it backfire.

 

[Crosbyman]

After I carefully rewired my 6hp I managed... to switch spark wires :facepalm: ....it never started till I switched them back

so as racerone suggested...check all plug wires sh... happens

I also applied weed ...and grass killer:laser: on my dandelions....wrong bottle :stupid:
my lawn looks different now and wife not very happy

 

[racerone]

I see folks fertilizing their lawn in the spring and then cutting the grass every 5 days.----I sprinkle a case of beer on my lawn in the spring.as it makes for a lot less work.---------Reason is -----The grass comes up " half cut " already.

 

[lindy46]

Points should be set to .020"

 

[scot]

tried again. no start. points set- key inn place. pulled a back muscle.

 

[lindy46]

Is it still backfiring or not firing at all? If no fire, try spraying some premix into the carb. If it's backfiring, the front-most coil fires the top cylinder.