Cam chain tensionerectomy...advice & guidance - SV650.org

03-12-04, 04:39 PM

SV650S K2, just about to hit 11,000 miles, and just 50 or so miles ago the cam chain started rattling really badly. There was a very small, almost imperceptible rattle before this, but I put on a new Yosh end can, re-jetted the carbs, and put in a BMC filter, and it just rattled something loose.

Anyway, I am planning on doing it myself, and I wanted guidance. I am mechanically inclined enough to do most anything, and I wanted to know what I needed (tools) and what I should prepare myself for (heavy engine work?)

Anyone with a how-to, or clear, succinct instructions please let me know!

03-12-04, 05:01 PM

sorry - was stearing at your avatar .

what did u say ?

rictus01 · 03-12-04, 05:02 PM

right a quick one to check,

going up behind the brake pedal area, above the swing arm and you'll see the tensioner, under the top 10mm (headsize) bolt.

insert a small flat bladed electrical screwdriver and turn it clockwise, you'll feel it tighten under the spring tension, when it won't go any further, pull the screwdriver out, the tensioner will snap back out.

replace the bolt.

(Note: careful with the srcewdriver, not to damage the thread around the hole).

the front is a bit more problematic to get to, but you need to do the same.

then give it a try, It's sorted mine out a couple of times, and I've never needed to replace the tensioner once.

sometimes they tend to stick a bit and this sorts it.

Cheers Mark.

embee · 03-12-04, 05:38 PM

Exactly as Rictus says.

Do the back one first since it's easy as pie. This'll give you the feel and idea of how it should go, then tackle the front one which is situated annoyingly near a frame tube next to where your left knee will be.

A little oil will come out when you take the end bolt out, that's normal.

You need a nice slender electricians/instrument type flat screwdriver to get to the front screw.

The adjuster/setting screws turn against a spring, and shouldn't be tight as such, so if they won't turn quite easily something might not be quite right, and take it easy. It should be finger&thumb pressure only.

I found mine were a bit "notchy" and seemed to settle in a new position when treated as described (though they weren't noisy before).

Check out the manual if you haven't already.
http://www.sv650.org/sv_manuals.htm

03-12-04, 07:13 PM

Have a look here.

http://forums.sv650.org/viewtopic.ph...ight=cam+chain

03-12-04, 04:39 PM	#1
ouchbadback Guest Posts: n/a	Cam chain tensionerectomy...advice & guidance SV650S K2, just about to hit 11,000 miles, and just 50 or so miles ago the cam chain started rattling really badly. There was a very small, almost imperceptible rattle before this, but I put on a new Yosh end can, re-jetted the carbs, and put in a BMC filter, and it just rattled something loose. Anyway, I am planning on doing it myself, and I wanted guidance. I am mechanically inclined enough to do most anything, and I wanted to know what I needed (tools) and what I should prepare myself for (heavy engine work?) Anyone with a how-to, or clear, succinct instructions please let me know!

03-12-04, 05:02 PM	#3
rictus01 Member Mega Poster Join Date: Jul 2003 Location: South London Posts: 9,799	right a quick one to check, going up behind the brake pedal area, above the swing arm and you'll see the tensioner, under the top 10mm (headsize) bolt. insert a small flat bladed electrical screwdriver and turn it clockwise, you'll feel it tighten under the spring tension, when it won't go any further, pull the screwdriver out, the tensioner will snap back out. replace the bolt. (Note: careful with the srcewdriver, not to damage the thread around the hole). the front is a bit more problematic to get to, but you need to do the same. then give it a try, It's sorted mine out a couple of times, and I've never needed to replace the tensioner once. sometimes they tend to stick a bit and this sorts it. Cheers Mark. __________________ Life should not be a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, in a cloud of smoke, thoroughly used up, totally worn out, and loudly proclaiming, 'Wow! What a Ride!

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03-12-04, 05:01 PM	#2
Warren Guest Posts: n/a	sorry - was stearing at your avatar . what did u say ?

03-12-04, 05:38 PM	#4
embee Member Mega Poster Join Date: Jul 2003 Location: Warwickshire Posts: 2,802	Exactly as Rictus says. Do the back one first since it's easy as pie. This'll give you the feel and idea of how it should go, then tackle the front one which is situated annoyingly near a frame tube next to where your left knee will be. A little oil will come out when you take the end bolt out, that's normal. You need a nice slender electricians/instrument type flat screwdriver to get to the front screw. The adjuster/setting screws turn against a spring, and shouldn't be tight as such, so if they won't turn quite easily something might not be quite right, and take it easy. It should be finger&thumb pressure only. I found mine were a bit "notchy" and seemed to settle in a new position when treated as described (though they weren't noisy before). Check out the manual if you haven't already. http://www.sv650.org/sv_manuals.htm

03-12-04, 07:13 PM	#5
Bonart Guest Posts: n/a	Have a look here. http://forums.sv650.org/viewtopic.ph...ight=cam+chain