Spark Plugs (all models)

XL600R, XR600R and XR650L
Type
Standard NGK DPR8EA-9 or NO X24EPR-U9
Extended high speed riding NGK DPR9EA-9 or NO X27EPR-U9
Cold climates (below 5C/41F) NGK DPR7EA-9 or NO X22EPR-U9
Gap 0.8 to 0.9 mm (0.031 to 0.035 inch)
XR650R
Type
Standard NGK BKR7E-11 or NO K22PR-U11
Extended high speed riding NGK BKR8E-11 or NO K24PR-U11
Gap 1.0 to 1.1 mm (0.039 to 0.043 inch)
Ignition timing full advance
XL600R 31-degrees BTDC @ 4000 rpm
XR600R 31-degrees BTDC@ 3500 rpm
XR650L 28-degrees BTDC @ 4000 rpm
XR650R 31-degrees BTDC @ 3500 rpm