Old Johnson Outboard

romeoted

Recruit
Joined
Jul 10, 2005
Messages
5
Need general specs on 4W 74R Serial # 041681<br /><br />Point gap?<br />Spark plug type and gap?<br />Year and size of motor?
 

dafox99

Petty Officer 1st Class
Joined
Jul 8, 2005
Messages
203
Re: Old Johnson Outboard

It's a '74 4 horse, but I don't have a book or specs.
 

Paul Moir

Admiral
Joined
Nov 5, 2002
Messages
6,847
Re: Old Johnson Outboard

.020" point gap max. Flywheel nut torque is 35 ft lbs ;) <br />Champion J6C (Canadian Tire has 'em) replacing the old J6J, gapped at .030". Weedless gear drive.<br /><br />Great little engine! Original fuel/oil mix is 50:1 87 octane gas and TC-W3 outboard oil, but I run mine with about 32:1 for very good reasons. Check out the oil mix FAQ in the FAQ forum for details.
 
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