RPM's Between Gears - Kawasaki KLR 650 Forum
1987 to 2007 Wrenching & Mods For maintaining, repair or modifications of Generation 1 KLR's. 2007 and earlier.

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 14 Old 05-29-2007, 09:31 AM Thread Starter
Recruit
 
Join Date: May 2007
Location: Aurora, Colorado
Posts: 7
RPM's Between Gears

Recently took my bike in for its 500 mile check up and when I got it back I noticed that when shifting between gears the RPM's were not dropping as quickly as I feel that they should to allow me to optimize the full range of the next gear. Idle is holding at the recommended 1200-1300 RPM.

Consulted the manual and it mentions an adjustment to back side of the acceleration handle and by loosening the tightening nut just beyond the handle I added some play to the acceleration and dececeleration wire as recommended and it seems to get a bit better but I still find that I need to hold the clutch in a bit longer than I would like to accomplish the drop in RPM's before I enter the next gear.

Could it be the choke that needs to have some play that could be causing the higher RPM's at operating speed? Any other ideas?

Many Thanks
Auroracycler is offline  
Sponsored Links
Advertisement
 
post #2 of 14 Old 05-29-2007, 02:05 PM
Major
 
Join Date: Sep 2006
Location: Elk Grove, Ca
Posts: 990
Quote:
Originally Posted by Auroracycler View Post
Could it be the choke that needs to have some play that could be causing the higher RPM's at operating speed? Any other ideas?

Many Thanks
I'd start there, good thinking.

<< just trying out a new smilie..nothing intended.
larryboy is offline  
post #3 of 14 Old 05-31-2007, 03:17 PM Thread Starter
Recruit
 
Join Date: May 2007
Location: Aurora, Colorado
Posts: 7
Quote:
Originally Posted by larryboy View Post
I'd start there, good thinking.

<< just trying out a new smilie..nothing intended.
I worked on the choke to no avail and took my bike to the shop and spent a few minutes with the technician. He fired it up and noticed the delay at the RPM top end and immediately concluded that the carb needed to be re-jetted.

Supposidly, the factory adjusts the carb to meet emissions and that is not the optimal setting for riding after they are sold and emissions are in the rear view mirror. The technician said that just about every recent KLR he sees suffers from this condition some to one degree or another. Mine seemed to be a littel bit worse than some he has seen recently. Hope I can talk them out of the repair bill....

Onward!
Auroracycler is offline  
post #4 of 14 Old 05-31-2007, 04:55 PM
Colonel
 
DXKLR's Avatar
 
Join Date: May 2007
Location: Richmond, Ky
Posts: 1,980
You might do a search for the air mixture mod. It involves removing the factory plug and opening up the screw another 3/4 of a turn or so. Made a big difference in my bike. I did this and the safety switch bypass mods after my 500 mile service.
Here's a great link with step by step procedure.
http://www.klr650.marknet.us/Carb_AirMix.pdf

2008 DL650 VStrom Yellow and Black
Previous ride was a 2007 KLR Black/Silver, I miss it..
Looking to get back into KLR's sometime soon.

Best Auto/Moto Insurance | Motorcycle Protection Today | FREE Trade-In Quote
DXKLR is offline  
post #5 of 14 Old 05-31-2007, 05:06 PM Thread Starter
Recruit
 
Join Date: May 2007
Location: Aurora, Colorado
Posts: 7
Quote:
Originally Posted by DXKLR View Post
You might do a search for the air mixture mod. It involves removing the factory plug and opening up the screw another 3/4 of a turn or so. Made a big difference in my bike. I did this and the safety switch bypass mods after my 500 mile service.
Here's a great link with step by step procedure.
http://www.klr650.marknet.us/Carb_AirMix.pdf

Excellent.Thanks for the information.

Ride on!
Auroracycler is offline  
post #6 of 14 Old 05-31-2007, 05:22 PM
Colonel
 
DXKLR's Avatar
 
Join Date: May 2007
Location: Richmond, Ky
Posts: 1,980
Few Mods this AM

This is my link showing some pictures. I decided to use a really small drill bit and a mechanics pick to remove the plug. Much easier to do without possibly messing up the mixture screw with a larger bit.

2008 DL650 VStrom Yellow and Black
Previous ride was a 2007 KLR Black/Silver, I miss it..
Looking to get back into KLR's sometime soon.

Best Auto/Moto Insurance | Motorcycle Protection Today | FREE Trade-In Quote
DXKLR is offline  
post #7 of 14 Old 05-31-2007, 06:19 PM
Flight Officer
 
Join Date: Oct 2006
Location: northern Arkansas
Posts: 81
What did they do at the 500 mile service that would account for the change in rideability?
Jim

KlR650 x 2 F650gs XL185
on2wheels52 is offline  
post #8 of 14 Old 05-31-2007, 07:04 PM Thread Starter
Recruit
 
Join Date: May 2007
Location: Aurora, Colorado
Posts: 7
Quote:
Originally Posted by on2wheels52 View Post
What did they do at the 500 mile service that would account for the change in rideability?
Jim
I have no idea. All I know is that when I was riding the bike before this service carefully varying the RPM's as instructed the bike seemed to act more like I expected it should relative to RPM variations when the throttle was backed off. After the service it is clearly exhibiting a hesitation at the top end that is most noticable in the low end of the gear box between gears. Efforts to put slack in the choke, and throttle linkage proved fruitless and that is when I took the bike to the dealer and asked to speak directly to the technician about the symptoms. A couple of twists of the throttle while watchig the RMP gage was all that the technicial needed to conclude that the carb jet needed to be modified to get things back to where things should be. His comment about the regularity of this condition from the factory with the emphasis on passing emissions as the primary objective was more than a bit concerning as this variable is obviously out of the control of consumers.

At the end of the day I just want my KLR 650 to perform as optimally as possible and that is where the buck stops for all of us.
Auroracycler is offline  
post #9 of 14 Old 06-01-2007, 03:01 AM
Major
 
Join Date: Sep 2006
Location: Elk Grove, Ca
Posts: 990
At your altitude the bike won't be running lean. It kind of sounds like a rich condition, that's why I asked about the choke cable. You may need to lean out the main jet to run better on your home turf..I'd imagine you ride a lot at 5500 feet and up.
larryboy is offline  
post #10 of 14 Old 06-01-2007, 11:52 PM Thread Starter
Recruit
 
Join Date: May 2007
Location: Aurora, Colorado
Posts: 7
I went ahead and had the shop technician do the carb work because he knew what he was doing and get me out the door in about an hour. I have been far to busy at work to attend to it and I want to ride this weekend. Cost me $40 but she runs like a scalded dog now and the RPM's drop off perfectly at the top end as they should. I am pleased at getting this issue behind me.

Cheers!
Auroracycler is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki KLR 650 Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Intake & Exhaust Gears Don't Line Up Biker Scout 1987 to 2007 Wrenching & Mods 24 11-05-2006 11:04 PM

Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome