Inspection Of Idle Speed; Inspection Of Ignition Timing - TOHATSU MFS 25D Service Manual

3. If the PT fluid level is insufficient, replenish the PT fluid to
the prescribed level.
PT Fluid:
OIL
ATF DEXRON III
PT Fluid Quantity (Reference):
260 mL (8.893 US fl.oz.)
4. Attach the reserve tank cap and tighten it to the specified
torque.
Reserve Tank Cap:
1.2 N · m (0.9 lb · ft) [0.12 kgf · m]

24) Inspection of Idle Speed

1. Start the engine and run for 5 minutes to warm up.
2. Check the idle speed using a tachometer or diagnostic
tool.
Tachometer:
P/N. 3AC-99010-0
Idle Revolution Speed:
850 min (rpm)
RPM -1

25) Inspection of Ignition Timing

Adjustment method: Automatic control. No adjustment
required.
Run the engine and use a timing light to check the ignition
timing.
11 timing marks are found on the side of the flywheel
(TDC0°, ATDC5°, 10°, BTDC5°, 10°, 15°, 20°, 25°, 30°,
35°, 40°), so the ignition timing is read from the mark in
the center of the starter case window.
Model
MFS25D
MFS30D
4st 25/30 2022
Range of Ignition Angle
ATDC3° - BTDC24°
ATDC3° - BTDC28°
Engine Starting
BTDC5°
BTDC 5°
3
Idling
ATDC3°
ATDC3°
3-31