KYMCO Mongoose/KXR 250 User Manual

3. INSPECTION/ADJUSTMENT
3-7
Mongoose/KXR 250
VALVE CLEARANCE
Remove the cylinder head cover. (See page
7-4)
Turn the flywheel clockwise so that the “T”
mark on the flywheel aligns with the index
mark on the right crankcase cover to bring
the round hole on the camshaft gear facing
up to the top dead center on the
compression stroke.
Inspect and adjust the valve clearance.
Valve Clearance: IN: 0.1mm
EX: 0.1mm
Loosen the lock nut and adjust by turning
the adjusting nut
Tappet adjuster E012
CARBURETOR IDLE SPEED
Warm up the engine before this operation.
Start the engine and connect a tachometer.
Turn the throttle stop screw to obtain the
specified idle speed.
Idle Speed: 1500±100rpm
When the engine misses or run erratic,
adjust the air screw.
Inspect and adjust valve clearance while
the engine is cold (below 35℃).
＊
• The engine must be warm for accurate
idle speed inspection and adjustment.
＊
Cylinder Head Cove
r
Round Hole
Valve Wrench
Throttle Stop Screw
Ai
r
Screw
“T” Mark
• Check the valve clearance again afte
r
the lock nut is tightened.
＊
Special
Index Mark

KYMCO Mongoose/KXR 250 Specifications

General

Brand	KYMCO
Model	Mongoose/KXR 250
Category	Offroad Vehicle
Language	English