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Old 02-26-2013, 01:58 AM   #551
Studly Adventurer
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Joined: Nov 2007
Location: Closed.
Oddometer: 569
I think I misunderstood you, is there oil coming out of the master cylinder at the bars? I was addressing this problem in my reply which can be a result of worn rings blowing into the sump pressurizing the cases and pushing back clutch oil out of the clutch lever, very common as the case seal on the clutch side is very small and teflon!

The jerkiness and grabby clutch on a 690RR ( Rally Replica) is something I tried to fix also, I asked the factory mechanics on many rallies about this, the only thing that fixed it on my 690 RR was 2 things, remove all the plates, you will notice an edge on the plates where they have been stamped out, all the rough edges need to point towards the outside of the bike, drop the oil and install the Motorex 20W60 oil designed for high performance singles, it solved my problem. All this came from a 65 year old original rally mechanic for KTM who did much design work on the 690RR - Walther was his name if I recall right, he also showed me the trick of pushing the front brake caliper with your knee across the disc and then pulling it back, this removed the softness of the lever ( after every stage ) and made it firm again, he said the Titanium caliper bowls flip the rubber seal when they get hot and increase chamber sizes, by pumping the caliper it flips the seal back......i must have bled the front 5 times trying to fix this issue!

QUOTE=shebanano;20807439]Someone with mechanical skills could ensure that this pump would work perfectly in a 690RFR?.

KTM to replace the OEM sells 950 and 990 Supermoto SuperEnduro. These pumps are of 10.5 mm diameter piston.
The RFR 690 has a pump piston with a diameter from 11 mm. In theory it should be valid for use in RFR 690.
If possible, I was interested to buy this:

... but it's a lot of money to spend if not safely.
Thanks for the replies.[/QUOTE]
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