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1997 – 1998 Yamaha Waverunner GP760 1200 Service Manual.

181 Pages.

Chapters Include –

1 General Information
2 Specifications
3 Periodic Inspection and Adjustment
4 Fuel System
5 Power Unit
6 Jet Pump Unit
7 Electrical Unit
8 Hull and Hood
9 Trouble Analysis

Troubleshooting, tune-up, maintenance and repair are not difficult if you know what tools and equipment to use, as well as the proper procedures. Our Factory service manuals are produced by the Original Equipment Manufacturers giving step-by-step instructions that guide you through jobs ranging from simple maintenance to complete engine and suspension overhaul.

This factory service manual can be used by anyone from a first time do-it-yourself enthusiast to a professional mechanic. Detailed drawings and clear photographs give you all the information you need to get the job done right.

As these are intended for the mechanics at the dealerships, some of the procedures in these manuals require the use of special tools. The resourceful mechanic can, in many cases, think of acceptible substitutes for special tools. This can be as simple as using a few pieces of threaded rod, washers and nuts to remove a bearing or fabricating a tool from scrap material.

Most factory service manuals provide general information in the first chapter. VIN and model/engine numbers. Specifications about your particular year/model of vehicle. Later chapters concern methods and suggestions for quick and accurate diagnosis and repair of problems. Troubleshooting procedures discuss typical symptoms and logical methods to pinpoint the trouble. Chapters later on will include information on periodic lubrication and routine maintenance necessary to keep your vehicle working in top condition. They also include recommended tune-up procedures, eliminating the need to visit your dealer frequently. Subsequent chapters often go on to describe specific systems, providing disassembly, repair, assembly and adjustment procedures.

Most of the service procedures covered in these factory service manuals are straightforward and can be performed by anyone with a reasonable level of skill.
Much of the labor charges for repairs made by dealers are for the time involved during the removal, disassembly, assembly and re-installation of other parts in order to reach the defective part. It is frequently possible to perform the preliminary operations yourself and then take the defective unit to the dealer for repair at considerable savings.
Downloading your Factory Service Manual from A1 Factory Service Manuals will give you all the information that the mechanic at your local dealership has. Knowledge is power.
Save money by doing most of the jobs yourself, and also be armed with the information you need for when that big job comes along. You will never be fooled into paying for something that you don’t need ever again.

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Service Repair Manual Application: 1996, 1997, 1997, 1998, 1999 (96, 97, 98, 99) E60, E60H 60HP (60-HP) Yamaha Marine Outboard 2-Stroke LIT-18616-01-29, LIT186160129, 186160129. Item Model Names: E60, E60H, E60HM, E60HE, E60HEM, E60MH, E60EH. Covers USA, Canada and wold wide models.

1999 E60MLHX MLHX LIT-18616-01-29
1998 E60MLHW MLHW LIT-18616-01-29
1997 E60MLHV MLHV LIT-18616-01-29
1996 E60MLHU MLHU LIT-18616-01-29

This service manual describes the service procedures for the complete Yamaha Outboard motor. Follow the Maintenance Schedule recommendations to ensure that the engine is in peak operating condition. Performing the scheduled maintenance is very important. It compensates for the initial wear that occurs during the life of the engine.

All chapters in the service manuals apply to the whole Yamaha Outboard engine and illustrates procedures for removal & installation of components that are in detailed step-by-step fashion.

All service manual chapters start with an assembly or system illustration, diagrams, exploded parts view, quality pictures, service information and troubleshooting for the section. The subsequent pages give detailed procedures. If you dont know the source of the trouble, go to the troubleshooting page located at the end of the manual for a list of causes and effects to determine the problem.

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Typical chapters in a Yamaha Outboard Service Manual (chapters may differ depending on year/model):


Manual Language: ENGLISH
Pages: 169
File Format: PDF
File Delivered In: PDF Format
Bookmarked for easy navigation: YES
Zoom in/out: YES
Works on all computers!



Cylinder compression :

Standard : 1300 1700 kPa (13 17 kg/cm2, 185 242 psi.)

Max. difference between any other cylinders : 100kPa (1.0 kg/cm2, 14 psi.)

NOTE: Figures shown are guidelines only, not absolute service limits. Low compression pressure can indicate one or more of following
Excessively worn cylinder wall
Worn piston or piston rings
Stuck piston rings
Poor seating of valves
Ruptured or otherwise damaged cylinder head gasket


1. Start engine and allow to warm up, then shut engine off.
2. Remove STBD / PORT side covers.
3. Remove all spark plugs.
4. Install compression gauge hose attachment into plug hole, then connect compression gauge hose to gauge hose attachment and compression gauge.

Compression gauge
Compression gauge hose
Compression gauge hose attachment

5. Disconnect safety lanyard (switch plate) from emergency stop switch. Disconnect the safety lanyard from the emergency stop switch prior to cranking the engine. This will prevent any residual fuel discharged from the cylinders being ignited by a spark discharge from the spark plug caps.
6. Disconnect remote control throttle cable from throttle lever.
7. Move and hold throttle lever in full-open position.
8. While cranking engine with starter motor, note maximum compression pressure reading on gauge for each cylinder.
9. Reinstall parts removed earlier. (spark plugs, side covers, etc.)


Excessive exhaust noise
Deformed exhaust system
Exhaust gas leaks
Poor performance

Clogged muffler
Broken exhaust system
Exhaust gas leaks

Oil level too low – high oil consumption

Oil consumption
External oil leak
Worn piston rings or incorrect piston ring installation
Worn cylinder
Worn valve guide or stem seals
Oil pump worn or damaged
Oil contamination

Oil or filter not changed often enough
Worn piston rings or incorrect piston ring installation
Worn valve guide or stem seals

Engine cranks but wont start

No fuel in tank
No fuel to carburetor
Clogged fuel strainer
Clogged fuel line
Clogged fuel tank breather tube
Misadjusted fuel level
Too much fuel getting to the engine
Clogged air cleaner
Flooded carburetor
Intake air leak
Contaminated/deteriorated fuel
Clogged jets
Clogged starting enrichment valve circuit
Improper starting enrichment valve operation
Improper throttle operation
No spark at plug (faulty ignition system)
Lean mixture

Clogged fuel jets
Faulty float valve
Float level too low
Restricted fuel line
Clogged carburetor air vent tube
Restricted fuel tank breather tube
Intake air leak
Faulty vacuum piston
Faulty throttle valve
Rich mixture

Starting enrichment valve open (ON)
Clogged air jets
Faulty float valve
Float level too high
Dirty air cleaner
Worn jet needle or needle jet
Faulty vacuum piston
Engine stalls, hard to start, rough idling

Restricted fuel line
Fuel mixture too lean/rich
Contaminated/deteriorated fuel
Clogged jets
Intake air leak
Mis-adjusted idle speed
Misadjusted pilot screw
Misadjusted float level
Restricted fuel tank breather tube
Clogged air cleaner
Clogged slow circuit
Clogged starting enrichment valve circuit
Faulty ignition system
Backfiring or misfiring during acceleration

Lean mixture
Faulty ignition system
Poor performance and poor fuel economy

Clogged fuel system
Faulty ignition system

Engine top-end problems usually affect engine performance. These can be diagnosed by a compression test, or by tracing top-end noise with a sounding rod or stethoscope. If the performance is poor at low speeds, check for a white smoke in the crankcase breather tube. If the tube is smoky, check for seized piston ring

Compression too low, hard starting or poor performance at low speed


Incorrect valve adjustment
Burned or bent valves
Incorrect valve timing
Broken valve spring
Uneven valve seating
Valve stuck open

Cylinder head

Leaking or damaged cylinder head gasket
Warped or cracked cylinder head
Loose spark plug

Compression too high

Excessive carbon build-up on piston head or
combustion chamber
Worn or damaged decompressor system

Excessive smoke

Worn valve stem or valve guide
Damaged stem seal
Cylinder/piston problem

Excessive noise

Incorrect valve clearance
Sticking valve or broken valve spring
Excessive worn valve seat
Worn or damaged camshaft
Worn rocker arm and/or shaft
Worn rocker arm follower or valve stem end
Worn or damaged push rod and/or cam follower
Worn cam chain
Worn or damaged cam chain tension er
Worn cam sprocket teeth
Cylinder/piston problem

Rough idle

Low cylinder compression


Compression too low, hard starting or poor performance at low speed

Leaking cylinder head gasket
Worn, stuck or broken piston ring
Worn or damaged cylinder and piston
Bent connecting rod
Compression too high, overheating or knocking

Excessive carbon built-up on piston head or combustion chamber
Excessive smoke

Worn cylinder, piston or piston rings
Improper installation of piston rings
Scored or scratched piston or cylinder wall
Abnormal noise

Worn piston pin or piston pin hole
Worn connecting rod small end
Worn cylinder, piston or piston rings

Starter motor turns, but engine does not turn

Faulty starter clutch
Damaged starter reduction gear

Excessive engine noise

Worn, seized or chipped transmission gears
Worn transmission bearings
Worn or damaged connecting rod bearing
Worn crankshaft main journal bearing
Worn connecting rod small end
Worn balancer bearing
Improper balancer installation
Consistent noise during cruising

Oil level too low
Foreign matter contaminating gear oil
Worn or damaged bearing
Worn or damaged ring gear and pinion gear
Deformed ring gear or differential case
Improper tooth contact between ring gear and pinion gear
Abnormal noises at start or during acceleration

Excessive backlash between ring gear and pinion gear
Worn differential splines
Loose fasteners
Worn cone spring or shim
Oil leak

Oil level too high
Clogged breather
Damaged seals
Loose case cover bolt
Over heating – Overheating

Oil level too low
Insufficient backlash between ring gear and pinion gear
Oil leak

Oil level too high
Clogged breather
Damaged seals
Loose case cover bolt

Yamaha Outboard Service Manual, Repair Manual, Shop Manual, Owner’s Workshop Manual, Engine Repair Guide, Handbook, Book, Learning Guide, Study Guide, Factory Engine Rebuild Manual 1996, 1997 (96, 97) E60, E60H 60HP (60-HP) Yamaha Marine Outboard 2-Stroke LIT-18616-01-29, LIT186160129, 186160129. Item Model Names: E60, E60H, E60HM, E60HE, E60HEM, E60MH, E60EH. Covers USA, Canada and wold wide models.

Propeller Information Charts, Propeller Selection, Propeller Removal & Installation, aluminum prop, steel prop, 4 blades, 3 blade, Torque Specifications, Inspection And Maintenance Schedule, Spark Plug Inspection, Fuse Replacement, Electric Start Models, Start in Gear Protection, Transom Bracket, Checking Power Trim Fluid, Power Trim System, Fuel System, Electric Fuel Pump, Recommended Battery, Battery Inspection, Battery Cable Connections.

Powerhead Views, Installation Drawing, Trim Tab Adjustment, Trim-In Stop Adjustment, Painting Procedures, Decals, Decal Application, Steering Cable, Steering Link Rod, Hoses, and Control Cables, Flywheel Assembly, Flywheel, Ignition Components, Coils, Ignition Test Procedures, Ignition Component Description, Starting and Idling, Starter Relay, Starter Solenoid Test, Starter Motor, Alternator System Test, 25 Ampere Stator, Stator Removal and Installation, Stator Coil, Stator Coil Peak Voltage, Electronic Control Module (ECM), Air Temperature Sensor, Throttle Position Sensor (TPS), Engine Water Temperature Sensor, Crank Position Sensors (CPS), Idle Air Control (IAC)

Water Pump, Water Pump Reassembly and Installation, Oil Pump, Oil Pressure Switch, Timing Belt Removal and Installation, Rectifier, Throttle Shutter Synchronization, Throttle Cam Adjustment, Throttle Shaft Adjustment, Pressure Regulator, EFI, Fuel Injectors, Fuel Hoses, Fuel Injection Nozzle, 10 ethanol in gasoline, 10 ethanol gas problems, Gas, 91, Octane, 89 Petrol, 93 Octane, Fuel Additive, Carburetor, Rebuilt Carburetor, Adjusting The Carburetor, Warming Up, Cold Start, Fuel Pump, Fuel Filter, Water In Fuel Filter

Rebuilt cyliner Block, Cylinder Block And Crankcase, Cylinder Head Removal, Cylinder Head Disassembly, Camshaft, Thermostat, Valves, Valve Springs, Cylinder Head, Valve Guides, Valve Seats, Cylinder Head Installation, Following Cylinder Head Installation, Shift Shaft, Upper Drive Shaft Bearing, Wiring Diagram, Fuel Flow Diagram, Oil Flow Diagram, Water Flow Diagram, Throttle Shift Linkage, Tiller Handle, Manual Starter, Electric Start, Mechanical Tilt, Hydro Tilt, Remote Control.