Dinli DL-702 2008, Руководство по обслуживанию

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ENGINE
【
6-29
】
W
45
○
● After the desired seat position and width is achieved, use the 45
○
cutter slightly to clean up any burrs caused by the previous cutting
operation.
CAUTION
Do not use lapping compound after the final cut is made. The
finished valve seat should have a velvety smooth finish but not a
highly polished or shiny finish.
This will provide a soft surface for the final seating of the valve
which will occur during the first few seconds of engine operation.
● Clean and assemble the head and valve components. Use the
vacuum pump gauge to cover intake and exhaust ports and check
for leaks. If any leaks occur, inspect the valve seat and face for
burrs or other things that could prevent the valve from sealing.
NOTE
D004 ‐ Vacuum Pump Gauge
After servicing the valve seats, be sure to check the valve
clearance after the cylinder head has been reinstalled.
Valve Spring
● Measure the free length of Valve Spring.
● Check the force required to compress the spring.
● If the result is not correct, replace the spring.
Service Limit of Valve spring free length
IN & EX 48.0 mm
Service Limit of Valve spring free length
IN & EX 19.0~21.4 kgf / 36.50mm
Vernier Calipers