Antique Engines and Old Iron
[Home] - [HELP] - [Forums] - [Articles] - [Photo Gallery] - [Groups] - [Chat] - [Classified Ads] - [Subscribe] - [Links] - [Books] - [Sponsors] - [Tools]

Go Back   SmokStak > SmokStak® Antique Engine Community > Small Air Cooled Gasoline Engines > Garden Tractors / Mowers / Scooters
Forgot Password? Join Us!

Notices

Garden Tractors / Mowers / Scooters Vintage lawn and garden tractors, mowers, snowmobiles and other old machinery that is driven by small air cooled engines.

Garden Tractors / Mowers / Scooters

Specifications for a 12hp Kohler engine?


this thread has 5 replies and has been viewed 9221 times

Reply
 
Thread Tools Display Modes
  #1  
Old 04-20-2009, 01:46 PM
gruby26 gruby26 is offline
Registered-II
 
Join Date: Jan 2009
Location: medford WI USA
Posts: 37
Likes: 35
Liked 2 Times in 2 Posts
Default Specifications for a 12hp Kohler engine?

I working on rebuilding a 12 hp kohler and i was wondering if anyone had the torque specs and valve lash.

the model # is K301a
and the spec# is 47446b
thanks for any help
Reply With Quote
Sponsored Links
  #2  
Old 04-20-2009, 02:52 PM
Mike in NC's Avatar
Mike in NC Mike in NC is offline
Subscriber
 
Join Date: Oct 2004
Location: Mountains of North Carolina USA
Posts: 1,170
Likes: 1,237
Liked 186 Times in 151 Posts
Images: 63
Default Re: specs for a 12hp kohler?

Try this link to the K-Series Service Manual
__________________
Mike Murphy Mike & Jen's Old Engines
Reply With Quote
The Following 2 Users Like This Post:
  #3  
Old 04-21-2009, 12:31 AM
Skippy1969 Skippy1969 is offline
Registered-II
 
Join Date: Aug 2005
Location: Baraboo, Wisconsin USA
Posts: 24
Likes: 0
Liked 5 Times in 2 Posts
Default Re: Specs for a 12hp Kohler?

Quote:
Originally Posted by gruby26 View Post
I working on rebuilding a 12 hp kohler and i was wondering if anyone had the torque specs and valve lash.

the model # is K301a
and the spec# is 47446b
thanks for any help
Here you go,right from the official Kohler manual.
Head bolt torque = 25-30 ft lbs.
Rod bolt torque
Posi lock New service rod= 260 in lbs.
Posi lock Used/reinstalled rod= 200 in lbs.
Cap screw New service rod= 285 in lbs.
Cap screws Used/reinstalled rod= 285 in lbs.
Valve clearance
Intake .008" - 010"
Exhaust .017"-.019"
Piston ring end gap
New rings .010"-.020"
Used rings .010"-.030"
Flywheel nut 50-60 Ft. Lbs.
Flywheel bolt 22-27 Ft.Lbs.
If you need any other specs let me know.
Reply With Quote
The Following User Likes This Post:
  #4  
Old 04-21-2009, 02:11 AM
gruby26 gruby26 is offline
Registered-II
 
Join Date: Jan 2009
Location: medford WI USA
Posts: 37
Likes: 35
Liked 2 Times in 2 Posts
Default Re: Specs for a 12hp Kohler?

thanks for the help thats just what i needed
Reply With Quote
  #5  
Old 04-21-2009, 08:56 AM
K D Redd K D Redd is offline
In Memory Of
 
Join Date: Nov 2004
Location: Southwest Missouri
Posts: 5,348
Likes: 166
Liked 1,198 Times in 1,060 Posts
Default Re: Specs for a 12hp Kohler?

BE SURE when you set the exhaust valve clearance you have the piston AT or a little after TDC at the end of the compression stroke/start of the power stroke. This will make sure the decompression release is not holding the exhaust valve lifter up which can cause a INCORRECT exhaust valve clearance setting. I like to set the valves BEFORE I install the head. Then I can turn the engine through and watch to make sure the exhaust valve is bumped off it's seat when the piston is about halfway up the compression stroke. This only happen at low starting speeds. When the engine comes to speed the decompression function stops.

Kent
Reply With Quote
The Following User Likes This Post:
  #6  
Old 04-21-2009, 10:39 AM
gruby26 gruby26 is offline
Registered-II
 
Join Date: Jan 2009
Location: medford WI USA
Posts: 37
Likes: 35
Liked 2 Times in 2 Posts
Default Re: Specifications for a 12hp Kohler engine?

thanks for the tip ill have to wch out for that
Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

F o r u m Jump

Similar Threads Chosen at Random
Thread Thread Starter F o r u m Replies Last Post
Torque specifications gruby26 Small Air Cooled Gasoline Engines 6 01-17-2009 12:35 PM
12hp ELLIS engine Oilpullman Antique Gas Engine Discussion 8 03-26-2008 04:43 PM
Kohler Air-Cooled Engine Specifications ListerDiesel Small Air Cooled Gasoline Engines 1 07-30-2007 03:53 AM
Hercules piston specifications Mike D1 Antique Gas Engine Discussion 0 08-29-2005 09:04 AM
12hp Fairbanks/Morse engine mastermind1188 Antique Engine Archives 4 08-12-2004 03:40 PM


All times are GMT -4. The time now is 05:53 PM.

Smokstak and Enginads site search!


All use is subject to our TERMS OF SERVICE
SMOKSTAK® is a Registered Trade Mark
A Community of Antique Engine Enthusiasts
Copyright © 2000 - 2014 by Harry Matthews
P.O. Box 5612 - Sarasota, FL 34277