Lotus Elise S1 Service Notes page 186

ENGINE
•KG 1577
Cylinder head - cleaning
1. Clean sealing surfaces on cylinder head and
camshaft carrier.
Use foam action gasket remover and a plastic
scraper - DO NOT USE A METAL SCRAPER
ON SEALING SURFACES.
Clean inlet and exhaust manifold joint faces.
2. De-carbonise combustion areas of cylinder
head and valves as necessary.
3. Blow out oilways and waterways, ensure oil
feed to camshaft carrier is clear.
A
NOTE: Cylinder heads fitted to later
engines have a 4.5 mm diameter oil drain
hole drilled through the head from the
camshaft oil seal recess; ensure drilling is clear.
4. K8 engine: Check fuel pump blanking plate - if
fitted for signs of oil leakage. Replace gasket if
necessary, tighten blanking plate nuts to 25
Nm.
8HM 0066
8. Using 18G 1577, remove and discard valve
stem seal.
9. K8: Repeat above operations to remove all
remaining valves.
K16: Repeat above operations to remove
remaining inlet valves.
CAUTION: Retain valves and springs in
/ j \ fitted order.
K16
10. Position cylinder head on its inlet manifold
face.
11. Repeat above operations to remove exhaust
valves and valve stem seals.
« CAUTION: Retain valves and springs in
/ ! \ fitted order.
49 OVERHAUL