Removal
1. Removeairfilteror hood.
2. Disconnect throttle linkage.
3. On engine 615,616 with choke control, unscrew vacuum lines.
4. On engines without choke control, unscrew support on intake manifold.
Note: Engine 617 i s also provided with a support on intake manifold.
5. Remove cylinder crankcase breather.
6. Remove exhaust system (49-1 00).
7. Loosen fastening nuts and remove intake manifold together with exhaust manifold.
lnstallation
8. For installation proceed vice versa, using a new gasket.
9. Adjust throttle linkage (30- 300).
10. Run engine, check intake system by spraying with Iso-Oktan D I N 51 756 or benzine for leaks.
11. Adjust idlespeed (07.1- 100).
