Quote:
Originally Posted by SibSerge
the front engine bracket was holding just on one bolt on one side - and that bolt had the nut half way loose (he is lucky as he could literally lose the engine on a big bump). other missing bolts and nuts here and there  . |
Loose nuts and fasteners are very common on the EX250. I've always attributed this to the vibrations produced by the EX250 engine (a particular vibration that only a high-revving parallel twin with a 180 degree crankshaft can make, my Suzuki GSF400, a 100cc per-cylinder inline 4, is also a "shift at 12,000 RPM kind of bike and its fasteners don't come loose like they do on my EX250).
And the nuts on the
Engine Mounting Bolts are especially bad about coming loose (all three of them: the Front Engine Mounting Bolt and the Upper and Lower Rear Engine Mounting Bolts).
I put a dab of Loctite "Blue" 243 on just about every fastener on the bike when I work on it. Loctite Blue is their medium strength product and it "permits disassembly with hand tools".