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View Full Version : OT.. need engine rebuild specs for 2 cyl Onan tractor motor.



torker
04-21-2008, 06:53 PM
Hey guys!
Anyone have a manual or other info for a 1980 Case 646(hydraulic drive) garden type tractor?
My brother in law needs the head torque #, valve lash, and point opening.
Anyone got this or know where to find it?
I did a Google search for the Onan info but nothing came up.
Thanks!
Russ

KiloBravo
04-21-2008, 07:42 PM
You could ask here

http://groups.yahoo.com/group/casegardentractors/

mark61
04-21-2008, 07:46 PM
What model ONan engine? I have books from when I rebuilt an old Linclon DC3 welder with an Onan engine.

mark61

JCHannum
04-21-2008, 09:46 PM
I have a couple of old Onan generator manuals. These are the inline flathead engines. If you have displacement or similar info, general setup information should be the same.

CCWKen
04-21-2008, 10:22 PM
I should have known better but I clicked on the Yahoo link anyway just to see what was going on. Yep, Yahoo still sucks! Here's what pops up on the screen.

http://img.photobucket.com/albums/0903/CCWKen/Displays/MWSnap067.jpg

wierdscience
04-21-2008, 10:50 PM
Here you go Russ,basic info by model is on this page.These guys are where I get all my Onan parts,very knowledgeable folks too-

http://www.perr.com/onan.html

torker
04-22-2008, 12:31 AM
Thanks guys! His motor is Model #CCKA-MS/3566J.
So Darin... all the info on that site for a CCK should be what he needs???
It's all there but the headbolt torque values.
Pretty interesting history about the company. Even Studebaker owned it then the Canucks took a run at it.
Hope I'll be ok with parts for my welder. It uses an Onan 18 hp. They probably only made a million of them...lol!
Russ

Tinkerer
04-22-2008, 12:43 AM
torker... Headbolt torque values (cold) 16-18 FT.-LB. 22-24 N.m is what I have in my Onan Service Manual.

torker
04-22-2008, 12:54 AM
Thanks Tink! Geez!!! DOH... I just noticed the ONAN ad at the top of the General page... oh boy!

wierdscience
04-22-2008, 09:47 PM
Thanks guys! His motor is Model #CCKA-MS/3566J.
So Darin... all the info on that site for a CCK should be what he needs???
It's all there but the headbolt torque values.
Pretty interesting history about the company. Even Studebaker owned it then the Canucks took a run at it.
Hope I'll be ok with parts for my welder. It uses an Onan 18 hp. They probably only made a million of them...lol!
Russ

Should be it,tell him to give those guys a call,book for that engine could probably be had for $25-30 and goes into pretty good detal.