Checking The Cooling Water Pilot Hole; After Test Run - Yamaha Z300A Supplementary Service Manual

GEN
INFO
Checking the cooling water pilot
hole
1. Check that cooling water is discharged
from the cooling water pilot hole.
Test run
1. Start the engine, and then check that the
gear shift operates smoothly.
2. Check the engine idle speed after the
engine has been warmed up.
3. Operate at trolling speed.
4. Run the outboard motor for 1 hour at
3,000 r/min or at half throttle, then for
another hour at 4,000 r/min or at 3/4
throttle.
5. Check that the outboard motor does not
tilt up when shifting into reverse and that
water does not flow in over the transom.
NOTE:
The test run is part of the break-in operation.
Break-in
During the test run, perform the break-in
operation in the following four stages.
1. First 10 minutes a of operation at idle
2. Fifty minutes b at 3,000 r/min or less
3. One hour c at 4,000 r/min or less
4. Eight hours d at 5,000 r/min or less with
repeated wide-open-throttle operation for
5 minutes or less
15
General information
S60V3140
a b c
È
0 1
È Hour

After test run

1. Check for water in the gear oil.
2. Check for fuel leakage in the cowling.
3. Flush the cooling water passage with
fresh water using the flushing kit and with
the engine running at idle.
d
2 10
S60V1120
6D03F1X