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Yanmar Pleasure Boat Marine Engine Help
Transmission (Gearbox) Codes and Information
Most Yanmar's have a Kanzaki transmission
fitted however some models (4JH3/4JH4/4LHA/6LPA/6LY) are supplied with
ZF Hurth or Twin Disc transmissions depending on model. Most engine
models have various transmission options, Discuus with your dealer
the most suitable unit for your particular requirements.
V-drive models are not sold in all global markets (not sold the UK
market).
Kanzaki is a wholly owned Yanmar subsidiary, visit their English language WEBSITE.
CAUTION: When checking the transmission
oil quantity, sit the dipstick on the threads regardless of model, do
not screw it in.
SD20/31 do not run before dipping otherwise oil may
be aerated which can be misleading, looking as if oil is emulsified.
Twin Disc models check oil level with engine idling.
Hurth hydraulic models run engine then dip immediately after
stopping.
Model code |
Description |
Oil type |
Oil Quantity |
|---|---|---|---|
KBW10E |
multi plate clutch up to 48hp (except 2.83:1)
# |
ATF* |
0.7 litre |
KBW20 |
As above, up to 62hp. # |
ATF* |
1.2 litre |
KBW20-1 |
As above, with adapter plate to fit 4JH3E
# |
ATF* |
1.2 litre |
KBW21 |
As above, up to 100hp. # |
ATF* |
1.2 litre |
KM2P |
cone clutch, parallel output shaft |
same as engine |
0.3 litre |
KM3A-1 |
cone clutch, 7deg down angle output shaft |
same as engine |
0.45 litre |
KM3P |
Servo-cone clutch, parallel output shaft |
same as engine |
0.35 litre |
KM3P4 |
As above, with adapter for 3JH3E and 4JH3E |
same as engine |
0.35 litre |
KM35P |
Heavier version of KM3P |
same as engine |
|
KM35A |
Heavier version of KM3A fitted to 3JH4E |
||
KM35A2 |
Heavier version of KM3A fitted to 4JH4E |
same as engine |
|
KM3V |
cone clutch, ' v ' output shaft 15deg angle |
SAE30 engine oil |
0.8 litre |
KM4A |
cone clutch, 7deg down angle output shaft |
SAE30 or engine oil |
1.3 litre |
KM4A1 |
As above, with adapter plate for 4JH3E |
SAE30 or engine oil |
1.3 litre |
ZF 30 M |
(2003/4) replaces KBW20-1 & KBW21 mechanical
multi plate clutch fitted to 4JH4E & 4JH3 range |
ATF* |
|
KM5A |
cone clutch, 7deg down output shaft |
SAE30HD oil |
2.1 litre |
HSW 630A1 or ZF 63 A |
hydraulic multi plate clutch |
ATF* |
approx 4.5 litre |
KMH4A |
Hydraulic clutch, 8deg down angle output
shaft |
Hydraulic oil |
2.0 litre |
KMH6A |
Hydraulic clutch, 8deg down angle output
shaft |
Hydraulic oil |
4.0 litre |
KMH6A1 |
Hydraulic clutch, 8deg down angle output
shaft |
Hydraulic oil |
4.0 litre |
SD20 |
Saildrive leg. Dog clutch GM/YM series
engines |
SAE80w/90 gear oil** |
2.2 litre*** |
SD31 |
As above but heavier duty, JH series up
to 56hp |
SAE80w/90 gear oil** |
2.2 litre*** |
SD40 |
Saildrive Cone clutch 3JH3CE, 4JH3CE, 3JH4CE
,4JH4CE |
'Quicksilver' High Performance Gear Lube. |
min 1.8 litre see below**** |
SD40-T |
As above but heavier duty, 4JH3-TCE 75hp |
'Quicksilver' High Performance Gear Lube. |
min 2.1 litre see below**** |
YX-70S |
Hydraulic clutch, parallel output shaft |
Hydraulic oil |
5.0 litre |
* ATF Automatic Transmission Fluid
** Except 1GM10C use engine oil
*** 2.6 litres with the optional long reach saildrive extension
**** CAUTION SD40/SD40-T units: The maximum
oil level should be re-marked on the dipstick 35mm above the current
maximum marking and the oil level should be maintained as near to the
maximum as possible (but not higher). This change in oil level is the
subject of Yanmar technical bulletin MSB 03-017 (click
for .pdf diagram). The oil is best pressure filled from the external
drain or internal filler hole using MerCruiser gear oil pump or similar
device. Oil can be pumped out & re-filled afloat from inside the
boat. I only recommend the use Quicksilver High Performance gear Lube
which is available from Yanmar Power centres, Mercury & Mercury
MerCruiser Dealers and certain handlers.
# These models can have a stiff/heavy gear selection& vague neutral
selection use "Morse Supreme" or equivalent low friction
33c type cables
CAUTION Hydraulic gearboxes require additional
oil for the remote mounted oil cooler so the quantity required may
vary. This cannot be calculated until the unit is completely installed.
