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MNT
Break-in
Operate the engine under load (in gear with a
propeller installed) for 10 hours as follows:
1. For the 1st hour a of operation:
Operate the engine at varying speeds up
to 2000 r/min or approximately 1/2 throt-
tle.
2. For the 2nd hour b of operation:
Increase the engine speed until the boat
is on plane (but do not fully open the
throttle), and then back off on the throttle
while keeping the boat at a planing
speed.
3. For the remaining 8 hours c of opera-
tion:
Operate the engine at any engine speed.
However, do not operate the engine at
full throttle for more than 5 minutes at a
time.
4. After the 1st 10 hours of operation:
Operate the engine normally.
a
b
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 passages using
fresh water. NOTICE: Do not perform
this procedure on land while the
engine is running. Otherwise, the
water pump could be damaged and
the engine could be severely dam-
aged due to overheating.
10-9
Maintenance
c
2
10
TIP:
When using the flushing device (flushing
hose joint adapter), flush the cooling water
passages without starting the engine.
General periodic maintenance
Checking the anode
Do not apply grease, oil, or paint to the
anodes or trim tab. Otherwise, the anodes
or trim tab could become ineffective.
1. Check the anodes and trim tab. See
"Checking the cylinder head anode" (7-
46), "Checking the exhaust cover anode"
(7-51), "Checking the exhaust guide
anode" (9-34), "Checking the PTT anode
(except high thrust model)" (9-59), and
"Checking the lower unit anode" (8-3).
Checking the battery
1. Check the battery. See "Checking the
battery" (10-3).
Checking the cooling water passage
1. Remove the water inlet covers 1.
2. Mark the alignment mark a on the trim
tab 2 and lower case, and then remove
the trim tab 2. (High thrust model)
3. Check the water inlet covers 1 and
water inlets. Clean if clogged.
3
1
1
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