Warming Up The Engine - TOHATSU MX 50D2 Owner's Manual

2. Warming up the engine

Before driving the boat, let the engine run
at low speed for approximately three min-
utes to let it warm and allow the oil to cir-
culate through the machine. If the engine is
not warmed up beforehand, the engine life
will shorten greatly. During the warm-up
operation, confirm that cooling water is
discharged from the check port and idle
port.
Idle port
CAUTION
Be sure to warm up engine well before
starting cruise. Operating cold engine can
give damage to it.
Note
Idle speed may be higher during warming
up of engine. If shifted to Forward or reverse
during warming up, it may be difficult to shift
back to neutral. In such case, stop engine,
shift to neutral, and restart engine to warm
up.
Be sure to stop engine immediately if cool-
ing water check port is not discharging
water, and check if cooling water intake is
blocked. Operating engine could lead to
overheating potentially leading to engine
damage. Consult an authorized dealer if
the cause cannot be found.
 Engine speed
Proper idle speed after warm-up opera-
tion.
Do not shift to "F" or "R" until turning into
Cooling water
proper idle speed.
check port
Do not exceed the full-throttle engine
speed.
ENGINE OPERATION
CAUTION
Clutch in (In gear) Clutch off (Out of gear)
750rpm
CAUTION
Wide-open throttle rpm range
50D2 : 5,150 - 5,850rpm
23
900rpm
5