compression/starting problems

[Tengai Mark Van Horn]

At 6:49 AM -0400 8/30/04, Walt wrote:

>If the bearings are good and all spacers are properly placed then the only >other reason left would be a worn out rubber ring of the cushdrive. You may >need to replace it or can try what Devon did. I think he either glued or >placed pieces of rubber cut form an old tube in between the hub and rubber >ring to take up the slack.

I filled mine with caulk, squished the drive back together and let it cure. Mark

[bigfatgreenbike@netscape.net]

J Fortner wrote:

> >Any idea what would cause wear between the rear drum assembly and rear >hub coupling assembly? > >Photos here: >http://langly.smugmug.com/photos/7849614-M.jpg >http://langly.smugmug.com/photos/7849618-M.jpg

I didn't see anyone else mentioning this, so here goes- did you a small spacer in between the sprocket carrier and the hub? look at: http://xd8ad0695.ip.e-nt.net/klr/RearHub.gif it's part# 42036. If this is missing (as if it fell out unnoticed at the last tire change) the bike would go back together almost the same (a few more threads visible past the axle nut) but the hub would slowly, over the next few thousand miles, eat itself. Beyond that, it just looks a bit dirty. The sprocket carrier bearings don't last long at all, and the cush drive rubbers also seem to harden and shrink with age. Devon -- Brooklyn '01 A15-Z KLR650 '81 SR500 __________________________________________________________________ Switch to Netscape Internet Service. As low as $9.95 a month -- Sign up today at http://isp.netscape.com/register Netscape. Just the Net You Need. New! Netscape Toolbar for Internet Explorer Search from anywhere on the Web and block those annoying pop-ups. Download now at http://channels.netscape.com/ns/search/install.jsp

[J Fortner]

Devon wrote:

>I didn't see anyone else mentioning this, so here goes- did you a small spacer in between the sprocket carrier and the hub? look at: > >http://xd8ad0695.ip.e-nt.net/klr/RearHub.gif it's part# 42036. If this is missing (as if it fell out unnoticed at the last tire change) the bike would go back together almost the same (a few more threads visible past the axle nut) but the hub would slowly, over the next few thousand miles, eat itself. > >Beyond that, it just looks a bit dirty. The sprocket carrier bearings don't last long at all, and the cush drive rubbers also seem to harden and shrink with age. > >

The 42036 appeared to be seated correctly. As it did not just fall out upon disassembly. The spacer came out as the rear sprocket was being cleaned. The 42036 and sprocket carrier bearings seem to be the most logical reasons for wear in this area. I will check them again off the KLR. Thanks, Jim

[Eric Lee Green]

Bogdan Swider wrote:

> It could be a weak starter motor. It may be having the > > >>same weak starting problem when warm, just a warm bike lights up so much >>easier. >> >> >> >Or a problem with the starter clutch. A fairly simple test is described in >the manual. > >

Or it could just be that he has disabled the compression release, and the stock starter is marginal when it comes to bumping over the motor against full compression. Check the normal stuff, like the connections to the battery, the battery itself (if it's more than a couple of years old and it's not a gel-cell, it's probably time for a new one), the starter selenoid, the coil and spark plug (to make sure getting full spark), etc. but realize that the starter system was designed to work with the compression release, and without the compression release is hard-pressed even with everything in perfect order. -E