Rachael's Yamaha R6 is a bike that's featured on the blog once before. This was the one that had the faulty ignition coils which gave a low RPM misfire. Today her Yamaha was here to replace a blown fork seal. We started off by removing the forks from the bike. Although only one seal had blown Rachael wanted both forks serviced just for piece of mind. Once the forks were removed it was a simple case of pull the legs down to their individual components and clean them up in the de-greaser bath. A final cleaning off with Solvex and the parts were already for reassembly. I always prefer to use genuine spare parts when repairing bikes and this one was no exception. A set of Yamaha seals were used plus Motul synthetic fork oil in 5 weight. The fork oil level was set to standard which on the Yamaha R6 is 106mm from the top of the leg. Once the bike was back together I took it on a quick road test just to make sure all was right. The bike seemed to steer a bit slow and once back at the shop I had a quick look over the front end. Unfortunately the front tyre was the wrong size and a 120/70/17 had been fitted instead of a 120/60/17. When Rachael came to collect her bike I told her what I'd found. She informed me that she'd been loosing confidence in the bike and it's handling and this was one of the reasons she'd wanted both fork legs serviced instead of just the leaking one. Although when you look at the two sizes of tyre next to each other they don't look that much different replacing the 70 profile tyre with the 60 will make all the difference and I'm sure this will restore her confidence in the bikes handling once again.