Honda Shadow Forums : Shadow Motorcycle Forum - View Single Post - How much do valve clearnaces usally have to be adjusted?

litnin · 09-27-2009, 07:40 AM

No, valves to not generally loosen over time, they get tighter.

The valve seat and the valve itself wears from slamming closed.
As they wear, the valve goes up in the seat more, which takes up
clearance between the rocker arm and the valve tip.

Initial valve check should be done at the 600 mile checkup.

After that, they should be checked every 15,000 miles.

09-27-2009, 07:40 AM	#6 (permalink)
litnin Senior Member Join Date: May 2004 Location: Dallas, GA Posts: 7,357	No, valves to not generally loosen over time, they get tighter. The valve seat and the valve itself wears from slamming closed. As they wear, the valve goes up in the seat more, which takes up clearance between the rocker arm and the valve tip. Initial valve check should be done at the 600 mile checkup. After that, they should be checked every 15,000 miles. __________________ Gasoline is for washing parts, Alcohol is for drinking... NITRO is for racing!