Manuals through 2025 now available!
Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.
LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la or
lemon-manuals.org.ua
(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)
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temporarily or
permanently
Air Injection Hose/Tube: Description and Operation
The stainless steel
air injection tubes are inserted into the machined bosses of the exhaust manifold. These tubes project into the exhaust port and direct the air into the vicinity of the exhaust valve seat.