Chrysler 70 HP 707HE Fuel Lines

[Nordin]

Derrick you are right , it is the taper that hold the flywheel in place.
The purpose of the key is to position the flywheel for the timing.

When you have a battery ignition system as in this case it is the timing marks that is important and the purpose of the key.
When you have a magneto or a magneto CD ignition system you have points,magnets, triggers that need to be in right position relative to the flywheel too.

Then it is important to lap the wheel/taper before you tight the flywheel nut when you have pulled the flywheel off.
The surfaces need to be as smooth and clean as possible and then tighten the nut to right spec. torque.

 

[jerryjerry05]

The right key is always best.
But almost anything that fits the groove and doesn't have any side to side slop will work.
Used to use a brass rod, cut down to size for shear pins.
Worked real good.

 

[Isa4325]

Got mine from SEA WAY MARINE, bought two jjust in case.

 

[Isa4325]

Can we talk air filters? I have a metal air filter with no filtering ability. Is there some sort of filtering that goes into this metal case?

 

[Nordin]

No filter, OBs does not have air filters.
No dust at sea.
It is an air silencer and it also pick up fuel and redirect it back to the intake manifold when tilting up the engine.
Some fuel always drip out of the carb when tilting

 

[Isa4325]

Thank You Nordin.

 

[jerryjerry05]

It's like the plenum on a Ford intake.
It should have(maybe) a hose from the bottom to the base of the lower part of the intake.
That is the fuel return line.
The cover also stopped the insulation from going into the carbs.
The cover had a sound deadening, sometimes foam.
It would shake loose and get into the carbs and end up costing piston damage.

 

[Isa4325]

It's like the plenum on a Ford intake.
It should have(maybe) a hose from the bottom to the base of the lower part of the intake.
That is the fuel return line.
The cover also stopped the insulation from going into the carbs.
The cover had a sound deadening, sometimes foam.
It would shake loose and get into the carbs and end up costing piston damage.

I see and yes there is a hose attached to the bottom. Still quite a noise when engine cover is off coming from intake.

 

[jerryjerry05]

ANY??? fuel coming back through the carbs while it runs?
Your sucking air through 3 fairly large holes and it's gonna be noisy.