Westerbeke L-25 User manual

RAW WATER OUTlET - ~
CONN. % I. DIA. HOSE
EXHAUST CONN. 1 ~ NPT _.r--~ii:at!=~
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W ATER OU TlET CONN .~'" -- ~ t:j: :.J ~-- ..fk +
2" I. DIA. HOSE (OPTIONAL) ~- "'- l<,-, IIII \\ 16.25
RAW WATER IN LET
CO NN . % I. DIA. HOSE
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k fUEL INL ET CONN. ~ NP T
Installation drawing of W9sterbeke L- 25 with 2:1 short pro fil e freewheeling sailing gear .
Weight 25 pounds . Turns ri ght hand propeller . Short profile gear also available with
vee drive . 2:1 or2 .6:1 reduction .
J
type manual gear shown with vee drive .
1:1.
167 :1 or2 :1 reduct i on . Weight 66
pounds . turns left hand propeller . J type gear
also ava i lab le in standard con figur ation , 1:1
Of 2:1 reduction . Reduction is offset 3 88 "
down from crankshaft centerline .
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SPECIFICATIONS
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Power
Curv e
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Type: Four cy linders in line. four cycle fresh water cooled diesel.
Displacement : 97 .6 cu. in. Bore 3.189"( 81 mm ), stroke 3.055" ( 77 .6 mm).
Pow
er : 22 hp at 2400 rpm (see power curve),
Compr essi on Ratio: 18 :1.
Weight :334 Ibs. basic engine. Add gear weights above for lOR weight.
Fuel
Injection Equipment : CAV distr ibuto r type injection pump
and nozzles. Direct injection combustion chambers .
Cylinder Block : Strongly ribbed cast iron.
Cylinder Head: Cast iron with large cooling water passages.
Crankshaft : Forged steel. coun ter balanced, Drilled holes
conduct oil to all bearing journals .
Main Bear i ngs : Fi ve , 21f8 ~ diameter, for maximum crankshaft support.
Camshaft : Heat treated forged steel. Three supporting bearings.
Pistons : Forged aluminum .Two compression ri ngs ,one oil control ring.
Connect ing Rods: Heavy duty forged steel.
lubr icati on: Externally mounted camshaft·driven pump .
Mount i ng: Adjustable ftexible mounts on 20u centers.
Exhaust Man i fold : Fresh water cooled.
Cooling System :Closed circui t fresh water system. Heat
exchanger , fresh and raw water pumps mounted on engine.
Angle of Installation : 12 ° maximum .
El ec trical System : 12-volt negative ground system with
45-ampere
al t ernator standard.
Transmission: See above for specificat ions and propeller rotation.
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flEX MOUNTING C ENTERS
fOR ~ BOLTS OR LAG SCR .
STANDARD EQUIPMENT
Fresh water cooli ng system with heat exchanger. surge tank
and
pumps mounted on engi ne ,adjustable flexible mounts :
pr opeller shaft coupli ng: clutch lever with lower exten sion for
remote con
tro l where appl icable : spin·on full ftow tu be oil
filter , sump p ump and hose; flexible fuel hoses for su pply and
return, engin
e-mounted secondary fuel oil filter , fuel lift pump
with hand primer . hydraulically governed fuel injection sys·
tern : 12-volt 45-ampere alternator with transistor regulator;
plug-in engine pre-w iring incl uding pre-wired start panel with
l a-loot cable ; threaded 1 %" IPS exhaust flange: fully illustrated
Instruction Manual and Parts List.
OPTIONAL EQUIPMENT
High efficiency primary fuel filter with water alarm: water-injected
exhaust elbow ; Hydro-Hush stainless steel water lift muffler ;
pre-wired
all-electric instrument panel with 10-foot cable :extra
la-foot cable for instrument panels or starting panel: h igh water
temperature,
low oil pressure alarm system: flexi ble shaft
coupling ; special engine mounts ,spare parts kits.
WESTERBEKE L-25
The WESTERBEKE l-25 is the lightest diesel for its power you
can buy.
11 is the first diesel able to compete with gasoline en·
gines on a performance per pound basis. Even with fresh water
cooling , 2:1 reduction gear. adjustable , flex ible mou nts and
plug-in engine pre-wiring ,the L-2Sweighs about the same as
gasoline
engines of similar perf ormance .
The WESTERBEKE L-25 is one
of the smoot hest and quietest
diesel engines we have ever seen.
Although light . it is strong
where it counts , dependable and durable .
The WESTERBEKE L-25 is available
with direct drive . buitt·in
lightweight 2: 1. or a vee drive, making it sufficiently versatile
for most boats in the 30 -38 foot range. If you want a light-
weight. durable .and quiet diesel with Westerbeke re l iabilit~.
try the WESTERBEKE L-25.
Westerbeke mar ine engines and related produc ts are sold
and serviced by Westerbeke distr i butors in major port cities
in
North America.
THE WESTERBEKE CORP.
216 20 LP 12/77
AVON INDUSTRIAL PARK . AVON . MASS . 02322· (6 17 1588 - 7700
CABLE : WESTCORP. AVON' TELEX: 92 - 4444

WESTERBEKE L·25
with standard
direct drive.
WESTERBEKE L-25
lightweight
marine
34079
diesel
engine
Features:
• Lightweight ,
about the same as a
gasoline engine of
similar performance.
• Rugged and Dependable,
strong where strength
is needed.
• Ideal for Ocean Racers,
where weight is importan
t.
• Smooth and Quiet
for cruis in g.
C & C 38
WESTERBEKE L·25
Short Profile
with 2:1
Salling Gear .

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I nstallation Drawings of
WESTERBEKE L-25 with standard
direct dr i ve . Gear weighs 26 pounds ,
turns left hand propeller .
Westerbeke Short Pr ofile Salling Gear
with built -In 2:1 reduction . Weighs 25
pounds , tur ns righ t hand pro p eller .
Vee Drive , 2:1 or 2.6:1 reduction .
\. W eighs 66 pounds , turns left hand
pr opeller .
SPECIFICATIONS
Type: F our cylinders in line, four cycle fresh water cooled
diese l.
Di splacement :97.6 cu. in. Bore 3.189" (8 1 mm ), stroke 3.055"
(77. 6mm) .
Power: 22 hp at 2400 rpm (see power curve).
Compression Ratio: 18:1.
We
igh t: 334 Ibs. basic eng ine. Add gear weights above for
lOR weight .
Fu el Injection Equipm e nt : CAY distr i butor type injectio n pump
and nozzles. Direct injection combustion cha mber s.
Cylinder Bloc k: Strongly ribbed cast iro n.
Cylinder Head: Cast iron with large cooli ng water passages.
Crankshaft : Forged steel. counter balanced . Drilled holes
co ndu ct oil to all bearing jo urna ls.
Ma in Be ari ngs : Five. 2 Va" diameter , fo r maximum crankshaft
support .
Ca
mshaft : Heat treated forged steel. Three su pp orting
bearings.
Pistons : Forged aluminum . T wo comp ression rings , one oil
control ring.
Connec tin g Rods: Heavy duty forged steel.
Lubrication : Externally mounted cam shaft- dri ven pressu re
pump . Full flow spin -on lube oil filter .
Mounting: Adjustable flexi ble mounts on 20 " cent ers . Special
mou nt s avai lab le on request.
Exhaust Manifold : Fresh water coo led.
Cooling System : Closed circui t fresh water system. Heat
exchanger . fresh and raw water pumps mounted on engine .
Angle of Installation : 12° maximum .
Electrical Sys te m: 12 -volt negative ground system with
45-ampere alternator s tandard .
Transmission: See above for spec if ications and propeller
rotation.
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b.L bL
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Power Curve
STANDARD EQUIPMENT
Fresh water cooling system with heat exchanger , surge tank
and pumps mounted on engine, adjustable flexible mounts :
propeller shaft co upling ; c lut ch lever with l owe r extension for
remote control where app li cable : spin-on full flow lube oil
filter , sump pump and hose: flexible fuel hoses for supply and
return,
engine-mounted secondary fuel oil filter. fuel lift pump
with hand primer , hydraulically go ve rned fuel injection sys-
tem;12-volt 45-ampere alternator with trans is tor regulator ;
plug-in engine pre-wiring inc lud ing pre-w ired start panel with
10-foot cab le; threaded lv." IPS exhaust flange ; fully il lustrated
Instruction Manual and Parts List.
OPTIONAL EQUIPMENT
Hi gh efficienc y pr imary fuel filter ; water-injected exhaust
el bow : H ydro- Hush stainless steel water li ft muffler ; pre-wi red
all-electric ins trument panel with la - foot cable : extra lO-foot
cable for i nstrument panels or starting panel; high water tem-
perature, low oil pressure alarm system; flexible shaft co upling :
special engine mo unts .spare parts kit s.
WESTERBEKE L-25
The WESTERBEKE L-25 is the lightest die sel f or its power you
can buy. It is the first diesel
able to compe te with ga soline en-
gine s on a perf o rmance per pound basis. Ev en with fresh water
cooling . 2:1 redu ctio n gear . adjustab le. flexible mount s and
plug- in engine pre-wiring . the L-25 weighs about the same as
gasolin e engines of similar performance .
The WESTEABEKE L-25 is
one of the smoothest and quietest
diesel engines we have ever seen. Although light, it is str ong
where it counts, dependabl e and durable .
The WESTERBEKE L-25 is
available with dir ect dr ive, built- in
lightweight 2:1, or a vee drive. making it sufficiently versatile
for most boats in the 30-38 foot range. If you want a light-
weight . durable .and quiet diesel with Westerbeke rel iability.
try the WESTERBEKE L-25.
Westerbeke marine engines and rel ated products are sold
and serviced by We sterbeke distributors in major port cities
in North A
mer ica.
J. H. WESTERBEKE CORP.
(
(
----------------------------(
AVON INDUS TR I AL PARK , AV ON , MASS . 0 2322 • ( 617 ) 588-7700
CABLE: WE STCORP. AVON • THEX : 92- 4444
21620 Pri nted in U.S.A.