Operation CHARM: Car repair manuals for everyone.
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)

Or, hide this message: temporarily or permanently

Technician Safety Information


1. Always use 12-volt batteries as a power source.
2. Do not attempt to disconnect the battery cables while the engine is running.
3. Handle all fuel injection related parts with care as they may easily be damaged.
4. NEVER apply battery power directly to a component unless told to do so in a test procedure.
5. Before removing any parts, turn off ignition and disconnect battery ground cable.
6. Keep EFI harness at least 10 cm (4 inches) away from adjacent harnesses.
7. Do not operate the fuel pump without fuel in the lines.
8. Do not try to disassemble the control unit.
9. Do not depress the accelerator pedal while trying to start the car.
6. When replacing or servicing any fuel system part, be sure to observe the following:
a. Put a "CAUTION: FLAMMABLE" sign in the workshop.
b. Be sure to furnish the shop with proper fire extinguishing equipment.
c. Be sure to disconnect battery ground cable before any service work is done.
d. Put any drained fuel in an explosion-proof container and put the lid on securely.