crank rust
 

whats the best way to remove rust from the crank and motor? please help.

Re: crank rust
 

You could use a Dremel with the Circular Steel Brush
bit. Set the speed to low to medium and just dab it
where you find the rust making sure not to press too
hard. Also make sure to keep a steady hand because
the circular motion can throw off the tool and may hit
the metal to metal parts..

Hope this helps..

Re: crank rust
 

By the way, I think that it is more important to know
and prevent the rust build up from happening again.

This is mainly caused by left over fuel inside the motor
after the motor has been ran and then kept.

Try to make it a habit to, after each day of running the
motor, to drain all the fuel from the tank and have the
motor run off all remaining fuel until the motor dies out.
This will insure that no fuel residue remains inside the
motor which causes the rust that you are encountering.

Some other people run the motor at idle and then pinch
the fuel line to cut off fuel supply.

Personally, I use the first method.

It may likewise be a good idea to use After Run Oil after
running out all the fuel. This will help lube the inner parts
of the motor and keep it in shape for longer period of time.

Hoep this helps further. :)

best way to remove rust from the crank and motor?
 

integ32;

You can remove it as 'jwf-ronni' has suggested.
But it is my experience that the bearings will also have rust in them and when you start the engine, this rust will come out and be sent through it causing damage.

(This is very good example of the reason for running the tank dry and using after-run oil.)

what kind of fuel were you using before this happened

i have in the past been known to be quite lazy with my maintenance for the last 2 years i didnt even own afterun oil (i do now) and i still dont drain tank always like im supposed to (i am trying to remember)

but i have never had anything rust inside one of my engines to my knowledge using mainly trinity fuel

but i have a friend who nearly ruined a new engine due to rust while using odonnel fuel

when i check my engines now after a day of running they are full of oil from the byrons fuel

Yep, with the Byron fuel, the engine is fully lubricated even after play.

Generally it ISN"T the fuel - if O'Donnell were a bad fuel then it wouldn't be one of the best selling fuels out there. I've been running it for several years without any problems.

The problem probably is that the fuel is old or has been sitting out or unsealed.

Methanol is hydroscopic meaning it attracts and absorbs water. Nitromethanol is even worse. So, if you leave your fuel open it's going to become waterlogged. Even if you leave it open for 20 minutes it's gotten some moisture in it.

If you live in a humid climate it's even worse, for obvious reasons.

Best bet is to a: keep your fuel bottle sealed, b: keep as little air in the bottle as possible and c: keep as little fuel in and around your motor when you're not running it.

Don't blame the fuel.