Checking And Adjusting The Valve Clearance - KTM 990 Adventure Repair Manual

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Checking and adjusting the valve clearance

NOTE: to make it easier to work on the front cylinder, remove the 4
radiator retaining bolts and pull the radiator forward.
– Pull the EPC valve on the front cylinder from the bracket.
– Disconnect the ignition coil connectors
out.
– Push back the spring-loaded band-type clamps
pliers 600.29.057.100 and pull the vent hoses from the valve cover
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connections.
– Remove both valve covers and the gaskets.
– Remove the plug
position and lock with special tool 0113 080802
position, the cams of the rear cylinder must point towards the inside
and the crosses on the camshaft gears must coincide with the plane
outer surface of the cylinder head (see Chapter 4).
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– Check the valve clearance with the feeler gauge. The minimum
clearance when the engine is cold should be 0.10 – 0.15 mm
(intake) and 0.25 – 0.30 mm (exhaust).
NOTE: if the valve clearance is incorrect for one or more valves,
measure how large the deviation is. Use thinner or thicker
compensating washers depending on whether the valve clearance is too
small or too large.
– Dismount the camshafts (see Chapter 4) and correct the thickness
of the shims.
NOTE: compensating shims from 1.85 mm to 3.20 mm are available in
graduations of 0.05 mm
– Unscrew the locking bolt, turn the engine to the TDC position of the
front cylinder and lock again (see Chapter 4).
– Check the valve clearance of the front cylinder and adjust if
necessary - See table on page 12-16 and 12-17 for a list of the
required shims.
NOTE: the procedure for the front cylinder is the same as for the rear
cylinder.
– Mount the EPC valve.
I
F THE RETAINING CLIP FOR THE FRONT
BE ABLE TO TOUCH THE FRAME
SLIGHTLY
– Mount both valve covers.
– Connect the vent hoses to the connections on the valve covers and
attach the spring-loaded band-type clamps
600.29.057.100.
– Mount the ignition coils and connect the connector.
– Screw the radiator back on.
, turn the crankshaft to the rear cylinder TDC
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! CAUTION
EPC
. T
HE ENGINE VIBRATIONS CAN CAUSE IT TO OPEN
,
RESULTING IN A LACK OF POWER FOR THE ENTIRE SPEED RANGE
12-17
and pull the ignition coils
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with the special
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. In the TDC
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!
, EPC
VALVE IS BENT THE VALVE WILL
.
with the special pliers
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