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Honda XR650R Parts, Service, and Repair » XR650R Known Problems http://www.honda-xr650r.com Organizing all the essential Honda XR650R information! Fri, 04 Feb 2011 06:35:42 +0000 http://wordpress.org/?v=2.9.2 en hourly 1 Right Side Footpeg Replacement Post http://www.honda-xr650r.com/right-side-footpeg-replacement-post/ http://www.honda-xr650r.com/right-side-footpeg-replacement-post/#comments Mon, 31 Jan 2011 14:28:24 +0000 Evan Fell http://www.honda-xr650r.com/?p=812 There are other posts on this site about the weakness of the right side peg bolts and post. Animal house sells modified posts which are much stronger and wrap around the frame. Baja Designs also offers a similar kit but may have discontinued it.

Animal House Designs Peg Replacement Post

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Check Your XR650R Thermostat http://www.honda-xr650r.com/check-your-xr650r-thermostat/ http://www.honda-xr650r.com/check-your-xr650r-thermostat/#comments Mon, 31 Jan 2011 14:21:45 +0000 Evan Fell http://www.honda-xr650r.com/?p=807 More >]]> The Honda XR650R Thermostat is known to fail regularly. This isn’t a drastic issue, but will cause your engine to run under non optimum temperature conditions if not treated. It’s a good idea to check your thermostat from time to time and if it looks something like the photo below then it is time to be replaced.

Honda XR650R Thermostat

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Destroyed XR650R Piston and Valves http://www.honda-xr650r.com/destroyed-xr650r-piston-and-valves/ http://www.honda-xr650r.com/destroyed-xr650r-piston-and-valves/#comments Mon, 29 Mar 2010 05:39:13 +0000 Evan Fell http://www.honda-xr650r.com/?p=608 More >]]> The top end of the Honda XR650R is very robust and long living. However, if you push it too hard you can eventually hit a wall. The pictures below are from a motor that was running a stage 2 cam. This cam puts the valves VERY close to the piston when fully open. When the cam chain stretches a bit then Kablammo!

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Have a Noisy XR650R? http://www.honda-xr650r.com/have-a-noisy-xr650r/ http://www.honda-xr650r.com/have-a-noisy-xr650r/#comments Mon, 29 Mar 2010 05:28:25 +0000 Evan Fell http://www.honda-xr650r.com/?p=604 More >]]> The XR650R is a fairly smooth running motor but is known to have a variety of rattles and ticks. If your motor seems to be making a little extra noise lately the cause could be one of the below:

notes from JM-2008

Worn Cam Chain

Historically larger XR,s (old 350’s/400/500/600/650) use a ‘Morse Hy-Vo’ type cam chain.
Looks like a series of gear teeth as opposed to a conventional roller chain.
When new and in good condition they run very quiet.
As the chain wears noise emanates from the rear of the cylinder near the cam chain tensioner.
Usual sign of a worn chain is the noise will diminish as engine rev’s increase.
Strange as this may seem it is due to the chain riding up on the gear type sprockets and taking up the slack.
Suggest checking your chain is not worn and tensioner is not stuck.

WEAK CLUTCH BASKET DAMPENER SPRINGS

(at rear of clutch basket) - If these have sagged or lost tension the clutch will be noisy at idle and low revs, the noise will usually diminish when you pull in the clutch.

BALANCER

Have not had one out of an XRR but suspect it’s the same as with all previous XR variants. These traditionally have a ’spring loaded split gear drive’ to dampen drive line lash and subsequently noise when not under load.
One of the gears will be spring loaded and appear not to line up with the adjacent gear when not installed.
Should this item lose spring tension the resultant noise will be caused by clearance/back lash in the drive gears.

AUTO DECOMP CAM

(item #7 on the camshaft – http://www.honda-xr650r.com/honda-xr650r-cam-shaft-rocker-arms-and-valve-assembly-parts-fiche/)
Not much to do with this other than remove it.

Unless the clutch hub is notched from wear I wouldn’t bother replacing it, same applies to the balancer & decomp cam, very little to be gained throwing wads of money at the motor to find it’s still noisy!

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Right Footpeg Snapping Issue http://www.honda-xr650r.com/right-footpeg-snapping-issue/ http://www.honda-xr650r.com/right-footpeg-snapping-issue/#comments Wed, 10 Mar 2010 10:50:35 +0000 Evan Fell http://www.honda-xr650r.com/?p=405 More >]]> The bolts holding the right footpeg to the frame are known to stretch on the XR650R. If they stretch too much they snap. These bolts should DEFINITELY be replaced with grade 8 hardened bolts. Do yourself a favor and replace them before your peg snaps off and you end up in the hospital. There are strengthened peg perches available from various suppliers that improve the mounting strength. Do a search on this site and you’ll find more information on the footpeg issue.

Honda XR650R Right Footpeg Stretched Bolt

Honda XR650R Right Footpeg Stretched Bolt 2

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