APE tensioner adjustment??? - K-Bikes.com - Excellence in Motion
LinkBack Thread Tools Display Modes
post #1 of 3 (permalink) Old Jul 18th, 2012, 1:12 pm Thread Starter
Join Date: Oct 2007
Location: Morgan Hill, CA, USA
Posts: 592
Question APE tensioner adjustment???

OK I just ordered my APE camchain tensioner.

I have read and copied the install process (thank you) but what I am still unclear of is the adjustment.

What kind of 'feel' will I have when tightening it?
It was said that rotating the wheel while in 6th gear turns the engine enough to 'feel' the chain with the tensioner.
Is this the way to go, or.....?????

Thanks guys.

kbmwrs is offline  
Sponsored Links
post #2 of 3 (permalink) Old Jul 18th, 2012, 3:15 pm
Join Date: Mar 2012
Location: Moyock, NC, USA
Posts: 357
Here is what I did (from my original thread pasted below)
APE's in depth instructions :


To set the tensioner adjustment, rotate the engine forward while screwing the tensioner bolt in. When you feel the engine tensioner parts (guide, rollers, etc.) make contact with the moving cam chain, back the tensioner bolt out 1/4 turn and tighten the jam nut.

DO NOT over-tighten the cam chain, as cam chain giude damage could occur. Be sure jam nut is tight against the tensioner body when complete.

APE says to "rotate" the engine until you feel the moving chain against the tensioner... There was no way I was going to crank nor start the motor up with zero tension at all on it, not to mention it takes some time to run the screw down with a hex key due to the limited space. Which could be disastrous trying to run it down quickly with the chain slapping away. I had my son rotate the rear wheel while in 6th gear (it's hard, so he had to use short hard strokes) There was a point when I definately felt the movement of the chain against the guard that the tensioner presses against. I figured (correctly apparently) that it was a good start point. I got it to that point and fired it up. That's when it still made a little but noticeable noise. It didn;t take much at all after reaching that point to silence it.

Original post : http://www.k-bikes.com/forums/showthread.php?t=25399

You will definately feel when the APE has good contact with the rail that is pressing upon the (moving) chain. What you want is more than just a "light" feel. You want it so you can definately feel the links when they first strike the rail. From that point fire it up and go by ear.


Last edited by moymurfs; Jul 18th, 2012 at 3:28 pm.
moymurfs is offline  
post #3 of 3 (permalink) Old Jul 31st, 2012, 7:17 pm
Sharkbait's Avatar
Join Date: Aug 2007
Location: Santa Rosa, CA, USA
Posts: 461
I wasn't able to get a good feel for when the tensioner hit the guide when I installed mine.

On the right side of the engine down by the crank is a small plug that can be removed with a T60. This allows you to get a wrench on the crank to turn the engine over and you can see the cam chain on the crank gear. By slightly rocking the crank with a wrench, you can see the slack between the cam chain and the crank gear (this is where it skips a tooth if too loose). It's very easy to get a good adjustment by watching that slack and rocking the engine back and forth.

I think Gmack mentioned this earlier, the threads on the adjuster are course enough that very little adjustment can make a big difference in the slack. This is very noticeable when you're watching it.


06 K1200R Corbin w/ smuggler, Wilbers shocks, PCIII, Factory Pro Dyno tuned, CC Suspension plates, Vario levers, Dual Evo filters, Leo Vince SBK, V1, Zumo 550

02 WR250F Stock

99 SV650 GSX-R front end, Aftershocks suspension, Penske shock, 41mm FCR flat slides, Bridgestone slicks, M4 exhaust, Vortex clipons, Woodcraft rearsets, Hot Bodies race bodywork, Factory Pro clutch cover, Total Loss ignition, BRG relocated battery, APE Adjustable Cam sprockets, JE 13:1 pistons, mild porting, balanced crank, Sunoco 110 race fuel

98 KLX331 Race Tech suspension, 331 Stroker big bore kit, 33mm pumper, Tag bars, Stroker exhaust, IMS desert tank, tall seat foam w/ Stroker cover, Open air box, KX clutch
Sharkbait is offline  

Quick Reply

Register Now

In order to be able to post messages on the K-Bikes.com - Excellence in Motion forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

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


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

Email Address:


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
Cam chain tensioner question ? Ronnie_D Other K-Bikes Discussion 5 Jan 24th, 2012 11:21 pm
Cam Chain Tensioner KR-Rider K12/1300R/R-Sport 12 Mar 11th, 2010 10:45 am
Throttle cable adjustment? Nexus-6 K12/1300GT (Next Gen) 4 Dec 12th, 2006 11:50 am
Double Up Adjustment for K12RS vanrynd K1200RS/GT (Classic) 4 May 1st, 2006 8:45 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