“Bikes don’t leak oil, they mark their territory.”
Today I’m going to show you how to adjust the valves on a Suzuki GZ250 motorcycle. Checking/adjusting the valve clearances is part of routine maintenance, and the service manual recommends you do it every 3000 miles or 15 months.
If any need adjusting, loosen the locknut with the 8mm wrench and turn the adjusting screw with the valve adjuster tool until it has the proper clearance. Try not to let the screw turn while you’re tightening down the locknut, or you’ll have to adjust it again. Trust me, I speak from experience.
The exhaust side isn’t that difficult to work with, but the intake is in a very tight location. I moved some of the wires and cables out of the way and still had a hard time getting my fingers in there. Do yourself a favor and buy some angled feeler gauges. Mine are flat, and that made it even more difficult, not to mention that they got all bent up in the process.
Once you get them all adjusted to spec and the locknuts tightened down, rotate the crankshaft 720° and check the clearances again. If everything is good to go, just put everything back together and you’re done!