Checking The Timing Belt; Cooling System; Checking The Cooling Water Discharge - Yamaha F40BMHD Service Manual

CHK
POWER UNIT/COOLING SYSTEM
ADJ
Measuring steps
(1) Remove the lock plate from the engine
stop lanyard switch on the remote con-
trol box/tiller handle.
(2) With the throttle wide open, crank the
engine setting the main switch in the
START position until the reading on the
compression gauge stabilizes.
6. Remove:
• Compression gauge
7 . Install:
• Spark plug(-s)

CHECKING THE TIMING BELT

Check:
• Timing belt
Wear/damage → Replace.

COOLING SYSTEM

CHECKING THE COOLING WATER
DISCHARGE
Check:
• Pilot water
Does not flow → Clean and check
the cooling water passage.
Checking steps
(1) Place the lower unit in water.
(2) Start the engine.
(3) Check that water flows from the pilot
water outlet.
3-17
E