Power tool to rotate crankshaft

[Carlasdaddy]

I’ve seen videos of someone using a power tool to start an outboard by rotating crankshaft. What kind of tool can. be used to do this? Is a 12 volt cordless drill powerful enough to spin the crank?

[trex014]

To spin to start and to spin just to spin are different things. If you just want to rotate the crank with the plugs out then yes the 12v will be more than adequate. I have a 8amp black and decker corded drill and a makita 12 amp corded drill and both started smoking when I tried to start up a 15 evinrude. Nothing was wrong with the motor, but just my personal experience.

[billw]

That’s why the recoil was invented. If you can’t start the engine with a functioning recoil, you need to address the problem of why not. Also, the flywheel nut has a specific torque. If you should happen to have the idea that an impact gun will start the motor, don’t do it. It will over torque the nut and damage the flywheel and maybe even the crank shaft. I am not sure whether a strong drill will over-torque a nut or not; but my guess is that on smaller motors, it probably will.

Long live American manufacturing!

[Tubs]

Also depends on the size of the motor.
I often use a battery drill for starting motors
for the first time, checking compression, or
on a motor that is hard starting, but they are
early, low compression, small motors.

A "Boathouse Repair" is one that done without having tools or the skills to do it properly.

[Carlasdaddy]

I am talking mid-fifties 7.5 & 10hp Evinrudes

[Mumbles]

I’ve found that a corded drill works better for starting purposes than a cordless drill. Cordless drills stop instantly and can be ripped out of your hand when the motor starts while a corded drill can be feathered back and lifted off smoothly.

[Tubs]

Ratchet adapter can eliminate the possibility of the drill
being ripped out of your hand when the motor starts
no matter what type of drill you should be using.

A "Boathouse Repair" is one that done without having tools or the skills to do it properly.

[sutterhome]

DO IT ALL TIME ON 10HP OR LESS. THATS ALL I HAVE.SAVES YOUR ARM.ITS ALSO VERY NICE WAY TO YOU HELP DIAL IN THE HIGH SPEED VALVE, WHILE THE DRILL DOES ALL THE WORK

[Carlasdaddy]

Where can I but a ratchet adapter?

[Tubs]

.

A "Boathouse Repair" is one that done without having tools or the skills to do it properly.

• This reply was modified 3 years, 6 months ago by Tubs.

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