Specifications

5. MAINTENANCE & INSPECTION 43
(5C) Adjusting the Position of the Trawling Remote Control Handle
1. Check to see that the trawling lever on the marine
gear side is in the high speed position when the trawl-
ing remote control handle is in H(high speed) position.
2. Check to see that the trawling lever on the marine
gear side is in the low speed position when the trawl-
ing remote control handle is in L(low speed) position.
3. If the positions are not aligned, loosen the setting
screw of the cable fitting and adjust the position of the
cable.
(6) Washing the Turbocharger Blower
When engine speed seems sluggish or the exhaust color
poor, the blades of the turbocharger blower may be dirty.
Wash the blower in the following manner.
1. Have ready blower wash (liquid detergent), fresh
water, and a small pitcher.
Blower Wash (4L)
Parts Code:974500-00400
2. Put the clutch in neutral and run the engine at high
speed (2500∼3000rpm).
3. Slowly pour approximately 50cc of blower wash into
the turbocharger air intake over a period of about 10
seconds.
4. After about 3 minutes, pour in approximately 50cc of
fresh water in the same manner over a period of about
10 seconds.
5. After operating the engine for about 10 minutes,
check the boost pressure and power output.
If there is no improvement after washing the blower,
repeat the washing process several times.
If there is still no improvement consult your local Yan-
mar dealer.
NOTICE:
Do not pour in a large amount of blower wash at one time (pour it in gradually) as this can
damage the blower blades and get water hammer in the combustion chamber leading to
accidents.
Cable fitting
Trawling lever
Low speed
(Trawling)
High speed
Trawling
Trawling
Loosen
Normal
operation
Turbocharger
Inlet
Blower wash
OPTION
KMH4A