OPERATOR'S MANUAL WESTERBEKE BTG 8.5KW, BTG 12.5KW, BTG 15.0KW MARiNE GASOLINE GENERATOR SETS Publicalion # 35909 Edition One December 1987 WEST
BTG 12.5KW Marine Gasoline Generator Distributor Air Intake Flame Arrestor Top Engine Oil Fill Carburetor Pressure IIC Connections Outlet Alternator W
YOUR NOTES
BTG 15,OKW Marine Gaso\;ne Generator Top F"",;"" Oil Fill Fresh Water Coolanl Fill Exhaust TernperSI!U!'e Switch 45° Exhaust
Distributor Coil A C Conneclions Oulle! Weslerbeke Generators BTG Hi.OKW Marine Gasoline Generator Air Intake Flame Arrestor Carburetor with Choke Al
GENERAL Inlroduction This manllai contains lhe equ1r)ment op'8n,tirlg proc:edul as well as additional information needed to the the marine in pr
BTG Its KW MARINE GASOliNE GENERATOR SET GENERAL SPECIFICATIONS Engine Governor Combustion Chamber Bore & Stroke Piston Displacement Firing Order
INTAKE """'T",n Carburetor type) IGNITION SYSTEM Generel Distributor Spark Plug Thread Size Spark Plug Type FUELSVSTEM Gener
BTG lUi KW SYSTEM SPECIFICATIONS Sea Water Flow, at 1800 rpm (measured before discharging into exhaust elbow) System Capacity (fresh water) LUBRICATI
BTG ItS KW SYSTEM SPECIFICATIONS AC GENERATOR General Rating (Volts AC) 60 Hertz (1800 rpm) 50 Hertz (1500 rpm) AC Circuit Breaker Generator Cooling A
BTG 12.5 KW MARINE GASOLiNE GENERATOR SET GENERAL SPECIFICATIONS Engine Type Governor Combustion Chamber Bore & Stroke Piston Displacement Firing
INTAKE SYSTEM Carburetor (STD type) IGNITION SYSTEM Genera! Distributor Spark Plug Thread Size Spark Plug Type FUEL SYSTEM General Fuel Lift Pump Fuel
Gasoline with an ETHANOL content higher than 10% (E10) is not allowed and may void warranty.Engines & Generators
BTG 12""KW SYSTEM SPECIFICATIONS Sea Water at 1800 rpm ITlE'ilsurcu before discharging into exhaust elblowl LUBRICATION SYSTEM General
AC GENERATOR General 60 Hertz (1800 50 Hertz (1500 AC Circuit Breaker Generator Cn,r,ilnn Air Ro,quii(Orrlenlts at 800 rpm NQTE incmase air !:'n
BTG 15.0 KW MARiNE GASOLINE GENERATOR SET GENERAL SPECIFICATIONS Engine Type Governor Combustion Chamber Bore & Stroke Piston Displacement Firing
BTG 15,() KW SYSTEM SPECIFICATIONS INTAKE SYSTEM Carburetor (STD type) IGNITION SYSTEM General Distributor Spark Plug Thread Size Spark Plug Type FUEL
BTG HHI KW SYSTEM SPECIFICATIONS Sea Water Flow, at 1800 rpm (measured before discharging into exhaust elbow) System Capacity (fresh water) LUBRICATIO
BTG 1!Ul KW SYSTEM SPECIFICATIONS AC GENERATOR General Rating (Volts AC) 60 Hertz (1800 rpm) 50 Hertz (1500 rpm) AC Circuit Breaker Generator Cooling
INSTALLATION CHECKS General Since the crafts in which Westsrbeks generators are installed vary in design, installation procedures will vary according
The generator is lilted w~h lifting eyes. Rope or chain slings capable 01 supporting the generator"s weight should be attached to the eyes and t
Generator M()urlllrig - localion com,llel:e fl,nemlor unIT Is mounted 011 rails means 01 four flexible isolator mounts thai tr~n"fA' of vib
s (ThiS page replaces the same page in the Operator's Manual) Governor Adjustments Operate the generator set to bring the unit up to its operatin
IMPORTANT PRODUCT SOFTWARE DiSCLAIMER Product software of all such as brochures, drawings, technical data, operator's and workshop manuals, part
CARBON MONOXIDE EXHAUST GAS IS DEADLY. Carbon monoxide is a dallqE!rollS gas tilat can cause unconsciousness and is potentially lelhal. Some oltha ~V
Exhaust Back-Pressure The exhaust discharge hose must be 01 adequate size and minimal run to prevent excessive exhaust back-pressure. Exhaust back
st,'Ck:~l~'pe exhaust khn"m 10 the must be at-tached to Ihe generator engine's ex~ hausl manifold by means 01 a flexible connec
Fuel SVllle.11 The generator must have its own fuel supply In other words, il must have Its own tubes and primary IiIter/water separator. DO N
FUEL LIME BELOW FUEL TANK TOP LEVEL AHTI-SIPHOW OEVICE OR ELECTRICALLY OPERATED FUEL STOP VALVE AT fUEL lANK WITHURAWAL FIITING ANTI-SIPHON 3EVICE OR
Make sure intake system (sea waler system) is in proper order. ChecK that the hull inlet, sea cock and strainer are unobstructed, Sea cocks and st
DC Elect!'ical Connections A common for the DC terminal connection is found al the of the oenet'atclr next to the starter, in the form of
Generator Make sure thet the AC output connections within the generator's distribution box are and in accord-ance with the specific AC Load Conn
PREPARATIONS FOR STARTING This section ollhe manual nrrlvirl"" lhe with prepallalion, initial starting or Follow the prc)cedures as nr_!~&q
FOREWORD Thank you for sel'scting a Wc"t<>rh"kA marine ",,'uU'C' for your use. We at Westerbeke are pleasE,d
STARTING PROCEDURE CARBON MONOXIDE EXHAUST GAS IS DEADLY Ventilate the for a minimum of 5 minutes to the gener~ atar, The ventilating blowers remove
When starting Ihe it is recommended thaI all AC large molars, be switched OFF until the has come up 10 in cold ciirnales, starts 10 warm up, This w
STOPPING PROCEDURE 1, Remove the AC electricallcad from the generator and allow the flA,n",'Rir)f to run lor 3 to 5 minutes to ste-bilize it
Under cold tenlpE,ratuFE'S, the condttlol1s can occur. Follow the instmctlons listed below when operating your sel in cold weather LUBR!CATIN
CARBURETOR AND FUEL SYSTEM Gasoline Use unleaded or leaded gasoline with an octane 01 89 or belleL In cold weather particularly, water vapor is by con
Opi:ional Fuel Filter A ~"'n'm' luel filler 01 the water should be installOO betvVeen the fuel tank and the Such e shown Is avai
The engine-mounted electric 11ft pump contains the second fuelliller screen, This pump supplies fuel to the engine's carburetor engine opera
ELECTRiCAL SYSTEM Engirle 12-Voit DC Control Circllit The engine that drives the end has a 12-Voll DC electrical conlrol circuit, as shown on the wi
Altemator When testing the alternator circuit circuit), do not use a high-voltage tester such as a megger; damaged diodes could result When operatin
t:i ::e '" ; iT '" "'" '" o '" ::I <0 01 -'" iil 8.SKW BT !2.5KW 8T l')I(W8T
TABLE OF CONTENTS Section GENERAL BTG 65KW GENERAL SPECIFICATiONS .. " ... "."." ... 12 SYSTEM SPECiFICATiONS BTG 125KW GENERAL S
; ~ CIRCUIT 8REAKER DC WIRING DIAGRAM #31190 1 012 "'1~ BROWN ." OH"G8 e SPARK PLUGS <::C:::fc :€t ALTERNA.TOR #14 PURPLE / ~ O
c.s. e 12 VOLTS DC DC WIRING DIAGRAM #37190 2012 e : 'I' hMER. SW. II :"-fJ SEE NOTE 3 START SOL STARTER _ ~t---------~ e-, -----i@-
OPTIONAL REMOTE START PANEL Wlli'IIN'G DIAGRAM # 3!l10!l OPTIONAl. Rt:MOTE 5TA.RT PANEL(RlAR V!lW) PN.33703 r ------->-- ---'-:---
COOUNG SYSTEM Westerbeke marine gasoline engines are designed and equipped for fresh water cooling. Heat produced in the engine by combustion and fri
Antifreeze Concentration Freezing Temperature ANTIFREEZE ADDITION DATA 13 23 30 35 45 50 OF 23 14 5 -4 -22 -40 -58 (' C) (-5) (-10) (-15) (-2
Fililhe fresh water ~v"t'''Tl as follows: 1. Remove the pressure cap from the manifold, 2, Pour a clean, fresh waler coolant mixtu
Sea Water The sea water pump is a bell-driven pump with a non-ferrous impelier. The impeller has flexible vanes which wipe against a curved cam wit
Illustrated below is 11 Both fresh water and sea water How ''''ou,,'' thek in(je!:>ermlsn! ron!!"" circui
LUBRiCATION SYSTEM Ene,i"" Oil For the engine's lubrication, llse a lubricating oil designated jor gasoiine service. Use a good grade
include 1. Draining the 011 Discharge the old oil through the sump drain hose (attached althe Iron! of the engine) while the is still warm. Drain the
TABLE OF CONTENTS MAINTENANCE & ADJUSTMENTS., , LAY-UP & RECOMMISSIONING.,., TABLE OF STANDARD HARDWARE TIGHTENING TORQUES ,.,.".,.,.&qu
BT GENERATOR This is a brushless self-excited which lorce 01 the Anrlln" to produce AC The copper and laminated iron in the exciter stator are
GreenM'hile Optional AVR ~~~~\ \ 1(-\\\\ ~ \ ! Generator AC Distribution Box BTG 12.SKW and BTG 15.0KW VOlIR,l RDJUSTMENT SHIM [GeAllON l AMlMAH
BRIDGE RECllFI REGULRTOR PLUG IlLUSTRAllON SHOWS TERMIRRLS CONNEClEO fOR 1201240 VOLT 60 HERTZ ON COMPOUND TRnNSFORMER REGULATION SElECTOR SWITCH UH&a
F------------, " AC 5 T 7 E 3 R " M B I N A l +: eGa': 11 : * I- ! I I + "2 I 2 i 1 L _______________ J :5 I I ______ J B l
Fl + AED& WH!TE I---$--~~---4~r-~~4-~ GREEN ; G WI-HiE + YELLOW & WHiTt A V R ~.----~~~~--~ . . . BLACK & WHilE - PLUG BTG 8.5KW Generat
An rm,tinn~1 solid-state vollagi8 Is available lor use with the BT series generators. When 1I181alled, and the "'Ituume)" SWITch Is mov
the "SYSTEM SPEC:IFICPITI()NS" section of this manual for nnnAl"8ir)C "l!inln~ page 15 lor the BTG page 19 for the BTG 1 and pege
Refer to Ihe "SYSTEM SPECIFICATIONS" section of this manual for rll'\'A'Pttnr ratings, page 15 for the BTG 6,::l!,"V, pa
Shore Power Conneclione If the installer connects shore power to the vessel's AC Ihls must be done means of the SHORE center transfer switch s
GENERAL INFORMATION AND CARE OF THE GENERATOR Use of Electric Motors The power required to start an electric motor is considerably more than is requir
BTG 1l.!'iKW MarinI! Gasoline Generator Fresh Waler Coolant Fill Exhaust Manifold Sea Waler Pump Heal lube Oil Dips,i Starler 450 Exhaust Elbow D
4-Pole Generator Load 120V (1 240V (rpm) Plants Plants None 1830 62 122 240 (1530) (52) (112) (224) Hall 1800 60 120 240 (1500) (50) (110) (2
ENGINE CONTROL PANEL General An remote start panel is available for controlling the generator Irom a remote iocation. REMOTE START PANEL REMOTE GAUGE
To STOP lhe the STOP which opens the closed B + and START switches. The STOP switch must be held open until the comes to a ""'&apos
ENGINE TROUBLESHOOTING Illtrodm:tion The tables which follow indicate troubleshooting procedures based upon certain problem indicators, the probabl
ENGINE TROUBLESHOOTING Engine cranks but tails to start. ---------,-----------Fnnirl" starts, runs and then shuts down, Weslerbeke Generators 10
Back firing through carburetor. Engine overheats. 11 3. fuel pump. 4. Faulty STOP switch. 5. Engine circuit breaker is tri,mlnn 6. fuellillers 7. Low
Engine hunts. Engine misfires. High oil pressure. low oil pressure. Weslerbeke Generators I. Throttle Iinl(ArlA is h'nn'nn 2. fuel filters.
No DC charge to lhe starting battery. Black exhaust smoke is discharged from the engine. Blue exhaust smoke is discharged from the exhaust 1. Connecti
MAINTENANCE AND ADJUSTMENTS Introduction This section contains a scheduled maintenance program and several the owner/operalor can without ihe benef
4. valve ciearanceel, 5. Ihe alternator and waler pump drive bell t"rl~irlll if I tlUIUlttlU. 6. Adjust the engine's no-load speed, if requi
all Fill Sea Waler Pump Tag Heat Exchanger BTG 12.5KW Marine Gasoline Generator Fresh Waler Coolant Fill Exhaust Temperature Swllch 45' Exhaust
Preventive Maintenance (alem,rlllor) Maintenance on the generator end is minimal: 1, Keep the generator clean, dry, and well-ventilated, 2, Ensure tha
1, Altacha and mark the fran! crankshaft on Ihe scale embossed on the ""elinp' 0 front coveL tolhe #1 groove and Ihe mark I'-----&
Governor Adlju:s!rnell1l!l Op:eral'e the OAnA!'Rt(1f set to the unit up to its oper21ting tElmpe:rali before ,,!t!~m:t)tlr\(lan adjustment N
H10 OOVerl1flr'S oil every 2000 hours OIOOOrflticm 4, The drive bell should be meintained in of rr~"ki!", condition. HeplE,cethe belt
Tighten lhe head bolls 10 lhe sequence shown in Ihe illustration below. Make sure the engine is cold when this is done. Loosen one head bold one-hal
To service the as needed. plugs. gap or replace the plugs Spark plug gap: 0.031 ± 0.002 inches (0.8 ± 0.05 mm) Spark torque 11 - 17lb-1l (1.5 - 2.
LAY·UI' AND RECOMMISSIONING General Many owners on their boatyards to prepare their including engines and generators, for lay-up during the all-
Close the thm-hull sea cock, Remove the sea water intake hose from the sea cock, Place the end of this hose Into a 5-gallon bucket of clean fresh wa
Batteries II batteries are to be left on board during the lay-up period, ensure lha! they are and will remain that way, to prevent them from freezing
TABLE OF STANDARD HARDWARE TIGHTENING TORQUES Unless slated otherwise for a sp(lcilic a:ssAmhlv use the lollowlnq hardware. Grade4T 6mm bolt head/nut
BTG S.5KW Marine Gasoline Generator NOTE: At the time of printing. a right-side photograph ollhe BTG 8.5KW generator set was not available. The BTG i
CvlinriM head bolls· Main bp,,,!rl" caps Conn'?cli'nq rod caps Camshaft sn,'nckAt Oil pressure switch Oil pan Oil filter Oil pump
OutPllt, Generator" Vol'I",,?! Connections (6 Stud Terminal Volltar.e Connections (12 Stud Terminal Carburetor" Governor " N
Connections, Load,."."" .,.,.,.,.,." .,.,.,.,.,.,.,.".,.,.,., Connections, Shore Power """",.,.,.".
E (COfllimJoo) Engine 12-Volt DC Conlrol Cireui!... ... ENGINE CONTROL PANEL. ... ... 43 . ... 67 Engine 011...
Ignition ,,.,,.,.,.,..,..,.,.,,,,,,,,,.,.,.,.,.,,.,,.,.,.,,.,.,.,.,.,.,,.,. ,.,,.,.,.,,.,,,.,.,.,., ,.,.,.,,.,,.,.,.,.,.,.,. ,,.,.,.,.,77 INDEX&quo
o (coll!im Optional Voltage 61 Optional Voltage Regulator, Installation ...
S (""nlicH 1""\ Spares (lay-up and Re'connmiissi,onilnol .. ' .. '' _________ ' ___ '_'_'
W Water Cooling System, Fresh (Lay-up and Recommissioning) . ... ... ... ... .. .. 82 Water, Fresh, Circuit ...
YOUR NOTES
YOUR NOTES
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