How do yo utest withOut controls?

Challenger84

Challenger84

Petty Officer 1st Class
Joined
May 9, 2010
Messages
341
I'm gonna to be picking up an outboard motor and would like to know how to test it without the controls?
The ob is a 70hp Johnson if that helps.
I will bring a long a fuel tank and a battery and my tools.
Can I use jumper cables to spin the starter and do a compression test that way?
What else should I look for.
Thanks
 
lindy46

lindy46

Captain
Joined
Nov 27, 2008
Messages
3,886
Re: How do yo utest withOut controls?

I usually bring a battery, jumpers, a compression tester and tool box. I'm not too concerned about starting the motor, as long as it has good compression. Also check the L/U oil for water intrusion. I ALWAYS assume the motor will need new points/coils/condensers, a new impeller and a carb rebuild. So the price I'm willing to pay will take into account those items. If I take it home and find new coils, etc. I consider it a bonus.
 
B

bob johnson

Rear Admiral
Joined
Feb 25, 2009
Messages
4,304
Re: How do yo utest withOut controls?

jumpers MAY work....Id get a long battery cable and crimp on some ring teminals and bolt up the battery connection right....

you only need two cables maybe 6-8 feet long and four terminals


they dont have to be as heavy duty as normally used , because they are just test cables.

the guy doesnt have a control with the motor???

if you cant hear it run, just go ahead and assume it will need a carb rebuild...and then check for spark and compression and looks for neglect and or corrosion

and look for replaced parts, gasket sealer excess is a clue...

good luck

bob
 
Challenger84

Challenger84

Petty Officer 1st Class
Joined
May 9, 2010
Messages
341
Re: How do yo utest withOut controls?

Thanks guys!
I'll look at all those things.
I really want to make sure it has compression.
As for the rest, seller said that the impeller was changed.
I will ask for some paper work on that claim.
 
You must log in or register to reply here.
Top