Question about Yamaha Motorcycles
Yamaha XJ 650
It could be the cam chain, the clutch basket. Or something worse. You will need to have it looked at.
Posted on Apr 05, 2015
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Posted on Jan 02, 2017
xj650(uk) and xj650j
inlet 0.16 - 0.20mm
exhaust 0.16 - 0.20
all other models
inlet 0.11 - 0.15mm
exhaust 0.16 - 0.20mm
set when cold
Posted on Feb 01, 2009
If you are saying the bike still continues to want to run, (rough running I am sure ), after the key is shut off then the engine is "dieseling". Carbon buildup on the piston / valves/ cylinder head is getting red hot from running. The hot spot(s) serve to ignite the fuel much the same as the spark plugs would. Burn only premium gas, be sure the cylinder is clean and not caked with mud or such, and change to a colder spark plug like NGK BP-8es or BP-9es ( BP-7es is the stock plug ). This may keep the engine cooler and stop the problem. The only other way is to pull the head then de-carbon it and the pistons. While the head is off, re-seat the valves using valve grinding compound. Check out Babbitts for parts. Go to www.babbittsonline.com/parts/viewbybrand/parts.aspx Please rate my answer.
Posted on Feb 25, 2010
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