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  #171  
Old 06-18-2012, 09:53 PM
lildevil_66 lildevil_66 is offline
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I just checked my Kaw fh601v but it has a suffix of CS06. I haven't dug into the carb or breather yet but perhaps someone has. Could this FH series motor be converted like the DS suffix engines. I may have to remove a few things and take a look see if it's possible.
Thanks in advance for any info...ain't this a great site!!
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2001 Dodge Ram 2500 Turbo Diesel
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  #172  
Old 06-22-2012, 09:38 PM
lildevil_66 lildevil_66 is offline
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Just a quick update after my mod. I went the cheap way and decided to file the throttle shaft since no dealers had the part in stock. All went well and after about an hour of work she fired right up. I could tell a noticable performance increase and little or no engine rpm decrease when I engaged the blades. I ran down to the bottom of the drive and came to a stop and then gave it full forward motion and it carried the front tires for about 10 feet. WOW!!! I didn't file the shaft to allow for a full 90 degree opening, I would say about 85 degrees. Don't know why, just where I decided to stop. I took a look at the oil filter area and noticed my engine already has the oil cooler installed. When I read the earlier post about the 49116 valve, I recognized I already had this part on my engine then upon further inspection seen the oil cooler. With that being said, I guess I could have went on to 90 degrees with my filing. Anyways, I think I am happy with the results but haven't tried it under actual cutting conditions but I will soon. Many thanks to all who post for all the info. Couldn't do it with out the help.
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2001 Dodge Ram 2500 Turbo Diesel
6.5 X 14 Custom Trailer
Toro Z Master 149 25hp/52" with DFS Collection Sys.
Honda HRB217 21" Self Propelled Hydrostatic
Ryan LawnAire 28 Core Aerator
Stihl HS80 Hedge Trimmer
Stihl HT101 Limb Saw
Stihl FS110 Trimmer
Stihl FS90 Trimmer
Stihl HL 135° Hedge Trimmer Attachment
Echo SRM260S Trimmer
Stihl BR600 Magnum Blower
Stihl BR420 Magnum Blower
Echo Backpack Sprayer
Shindaiwa RS60 Spreader
And the best employee in the business...My Son!!
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  #173  
Old 06-23-2012, 07:01 PM
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piston slapper piston slapper is offline
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If you file down the throttle stop...
Make sure that you readjust the governor..
The gov is adjusted at WOT....if you filed it....its off...
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  #174  
Old 06-23-2012, 07:24 PM
lildevil_66 lildevil_66 is offline
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Quote:
Originally Posted by piston slapper View Post
If you file down the throttle stop...
Make sure that you readjust the governor..
The gov is adjusted at WOT....if you filed it....its off...
Posted via Mobile Device
I can watch the governor and it seems to working fine. Filing the throttle shaft to the shape of a 25hp throttle shaft shouldn't cause the governor to need readjusting should it? I didn't read anywhere else where it was necessary. I am going to run it a few hours and try it in some situations that would call for more hp and see how it does. I did go ahead and order a new throttle shaft just in case something went wrong. So far so good!!
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2001 Dodge Ram 2500 Turbo Diesel
6.5 X 14 Custom Trailer
Toro Z Master 149 25hp/52" with DFS Collection Sys.
Honda HRB217 21" Self Propelled Hydrostatic
Ryan LawnAire 28 Core Aerator
Stihl HS80 Hedge Trimmer
Stihl HT101 Limb Saw
Stihl FS110 Trimmer
Stihl FS90 Trimmer
Stihl HL 135° Hedge Trimmer Attachment
Echo SRM260S Trimmer
Stihl BR600 Magnum Blower
Stihl BR420 Magnum Blower
Echo Backpack Sprayer
Shindaiwa RS60 Spreader
And the best employee in the business...My Son!!
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  #175  
Old 06-23-2012, 07:56 PM
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piston slapper piston slapper is offline
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By filing the shaft...you allowed the throttle butterfly to open further...
I believe you are confusing engine speed with engine power...
A governor that is out of adjustment will make the engine overspeed...
And possibly throw a rod...you may not have read it anywhere else....
You're reading it now...Adjust the governor...
I really don't want to see you start a thread on how to replace a rod....
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  #176  
Old 06-23-2012, 09:51 PM
lildevil_66 lildevil_66 is offline
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Quote:
Originally Posted by piston slapper View Post
By filing the shaft...you allowed the throttle butterfly to open further...
I believe you are confusing engine speed with engine power...
A governor that is out of adjustment will make the engine overspeed...
And possibly throw a rod...you may not have read it anywhere else....
You're reading it now...Adjust the governor...
I really don't want to see you start a thread on how to replace a rod....
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Ok, I will check it before I use it. I checked it before I filed and it was 3605 rpms which is well within specs. Low idle was 1527 rpms. These of course were factory set and seems to be holding well being the mower is 12 years old. I am still a little confused since changing the throttle shaft versus filing the throttle shaft is basically the same ( I think ). The new shaft I ordered should be here around Tuesday and I will do some comparing of each then. If what you are saying is correct and I have no reason to doubt otherwise, then any change or modification to the throttle shaft would require a slight adjustment to the governor. I did notice while watching the governor adjust under load that it did not go all the way to the stop. I suppose the load on the engine was not great enough to cause the engine to dip in rpms to warrant the correction. All I was doing was engaging the blades when watching and I am sure in heavy grass or going uphill the governor will go to the stop to increase the hp but as soon as the load is overcome it should return to the 3600 rpm range. Correct me if I am wrong but that is how I understand the governor works. Just by listening to the mower I did not notice any increase in rpm's after the modification, but that was just by ear.
Like I stated earlier, I will check it in the morning. Thanks for the help, I too would rather not start a new thread on how to replace a rod.
__________________
2001 Dodge Ram 2500 Turbo Diesel
6.5 X 14 Custom Trailer
Toro Z Master 149 25hp/52" with DFS Collection Sys.
Honda HRB217 21" Self Propelled Hydrostatic
Ryan LawnAire 28 Core Aerator
Stihl HS80 Hedge Trimmer
Stihl HT101 Limb Saw
Stihl FS110 Trimmer
Stihl FS90 Trimmer
Stihl HL 135° Hedge Trimmer Attachment
Echo SRM260S Trimmer
Stihl BR600 Magnum Blower
Stihl BR420 Magnum Blower
Echo Backpack Sprayer
Shindaiwa RS60 Spreader
And the best employee in the business...My Son!!
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  #177  
Old 06-24-2012, 07:17 AM
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piston slapper piston slapper is offline
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I assumed you already had a noticable increase in speed..
If you don't have full travel of the shaft...your modification hasn't changed a thing..
When you adjust the governor..you will find the extra horsepower you are looking for...
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  #178  
Old 06-25-2012, 09:19 AM
lildevil_66 lildevil_66 is offline
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Quote:
Originally Posted by piston slapper View Post
I assumed you already had a noticable increase in speed..
If you don't have full travel of the shaft...your modification hasn't changed a thing..
When you adjust the governor..you will find the extra horsepower you are looking for...
Posted via Mobile Device
OK, checked it this morning and I am still at 3600rpm's. When I engage the belts I can see the throttle shaft momentarily go to the stop and as soon as the load is overcome the governor drops back to just off the stop and the engine continues at 3600. When I engage the blades, the rpm's drop maybe 50rpms but it's so quick I can get an accurate reading from the tach. I am still at 1550 at idle and the engine appears to be unchanged until I engage the blades or turn up a hill. Only then can I tell it is a bit more responsive and the mod is likely helping. I didn't adjust the governor since the engine is never getting above 3600rpm's. I have a good friend who has about 50 years experience in small engines and 20 years dealing with Kaw's. I think I will give him a call to ease the mind. I personnally think everything is good to go but will get his opinion to verify.
__________________
2001 Dodge Ram 2500 Turbo Diesel
6.5 X 14 Custom Trailer
Toro Z Master 149 25hp/52" with DFS Collection Sys.
Honda HRB217 21" Self Propelled Hydrostatic
Ryan LawnAire 28 Core Aerator
Stihl HS80 Hedge Trimmer
Stihl HT101 Limb Saw
Stihl FS110 Trimmer
Stihl FS90 Trimmer
Stihl HL 135° Hedge Trimmer Attachment
Echo SRM260S Trimmer
Stihl BR600 Magnum Blower
Stihl BR420 Magnum Blower
Echo Backpack Sprayer
Shindaiwa RS60 Spreader
And the best employee in the business...My Son!!
Reply With Quote
  #179  
Old 06-25-2012, 10:37 AM
piston slapper's Avatar
piston slapper piston slapper is offline
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Quote:
Originally Posted by piston slapper View Post
I assumed you already had a noticable increase in speed..
If you don't have full travel of the shaft...your modification hasn't changed a thing..
When you adjust the governor..you will find the extra horsepower you are looking for...
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  #180  
Old 06-25-2012, 04:58 PM
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fatboynormmie fatboynormmie is offline
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Join Date: Jul 2009
Location: balto md
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Quote:
Originally Posted by piston slapper View Post
By filing the shaft...you allowed the throttle butterfly to open further...
I believe you are confusing engine speed with engine power...
A governor that is out of adjustment will make the engine overspeed...
And possibly throw a rod...you may not have read it anywhere else....
You're reading it now...Adjust the governor...
I really don't want to see you start a thread on how to replace a rod....
Posted via Mobile Device
piston slapper is giving you the CORRECT info here take heed.I performed this upgrade to my motor and at first didn't adjust the governor.After adjusting the governor the extra power WAS noticed.Under LOAD the governor only pushes to where the butterflies were adjusted at with the original stop.You need to open the butterflies all the way open and adjust the governor arm and tighten the bolt.It really only took me a couple minutes to do on my mower.Good Luck!! BTW the difference from me changing my 23hp to a 25hp was nite and day.Now there is enough power that if you push the hand levers too fast the mower can ride a wheelie .The 23hp never was able to do that at all. I was shocked the first time the mower jumped up and drug the back engine guard and no I don't make it a habit of tearing up my equipment
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