Idle Engine Speed Will Not Stabilize - TOHATSU MFS 4 Service Manual

O
Troubleshooting
K
Trouble 3

Idle engine speed will not stabilize.

• Inspection of Intake Manifold, Air Intake System and Ignition System
Check operations
of throttle cable and drum.
Normal ?
Check ignition timing.
Out of specified
range?
Check igniter clearance.
9-8
YES
YES
NO
Adjust throttle cable.
NO
Check gaskets
if secondary air is
sucked through them.
4st 4/5/6 2011