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Honda V45 MAGNA-VF750C 1983 User Manual

Honda V45 MAGNA-VF750C 1983
376 pages
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Table of Contents

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Honda V45 MAGNA-VF750C 1983 Specifications

General IconGeneral
Displacement748 cc
Compression Ratio10.5:1
Transmission6-speed
Final DriveShaft
Rear SuspensionDual shocks, adjustable preload
Front BrakesDual disc
Rear BrakesDrum
Rear Tire130/90-16
Bore x Stroke70.0 x 48.6 mm
Fuel System4x Keihin carburetors
Front SuspensionTelescopic fork

Summary

General Information

General Safety

Safety precautions for operating and maintaining the motorcycle.

Lubrication

Engine Oil Level

Procedure for checking engine oil level and oil pressure warning.

Engine Oil & Filter Change

Steps for changing engine oil and filter.

Oil Pump Removal

Steps for removing the oil pump assembly.

Assembly

Steps for assembling the oil pump components.

Installation

Instructions for installing the oil pump and related parts.

Lubrication Points

Diagram showing all lubrication points on the motorcycle.

Maintenance

Valve Clearance

Procedure for inspecting and adjusting valve clearance.

Valve Clearance Inspection

Inspection and adjustment of valve clearances for all cylinders.

Cylinder Compression Test

Procedure for testing cylinder compression.

Fuel System

Carburetor Removal (V45 SABRE)

Steps for removing carburetors from the V45 SABRE.

Carburetor Removal (V45 MAGNA)

Steps for removing carburetors from the V45 MAGNA.

Vacuum Chamber Removal

Steps for removing the vacuum chamber, diaphragm, and piston.

Float Chamber Removal

Removing and measuring float level for carburetors.

Pilot Screw Removal

Removing pilot screw plugs and pilot screws.

Pilot Screw Adjustment

Installing and adjusting pilot screws.

Carburetor Installation

Installing carburetors and performing related inspections.

Pilot Screw Adjustment Procedure

Procedure for adjusting pilot screws for idle drop.

Engine Removal/Installation

V45 SABRE Engine Removal

Exploded view and torque values for engine removal.

V45 MAGNA Engine Removal

Exploded view and torque values for engine removal.

Engine Removal Procedure

Steps for removing the engine, including draining fluids and disconnecting components.

Engine Installation Procedure

Installing engine mount rubbers, exhaust system, and filling fluids.

Cooling System

Coolant Replacement

Procedure for draining, filling, and bleeding the cooling system.

Thermostat Removal (V45 SABRE)

Steps for removing the thermostat from the cooling system.

Thermostat Removal (V45 MAGNA)

Steps for removing the thermostat from the cooling system for V45 MAGNA.

Radiator/Cooling Fan Removal

Steps for removing the radiator and cooling fan.

Radiator Disassembly

Disassembling the radiator, fan shroud, and fan.

Water Pump

Mechanical seal inspection and water pump removal procedures.

Water Pump Inspection

Checking water pump for seal leakage and bearing wear.

Water Pump Installation

Installing new O-rings, water pump shaft, and water pump.

Water Pump Installation Steps

Installing dowel pins, O-ring, water pump cover, hose, crankcase rear cover, and filling coolant.

Clutch

Clutch Troubleshooting

Common clutch problems and their causes.

Clutch Fluid Replacement / Air Bleeding

Procedure for draining, filling, and bleeding the clutch fluid.

Clutch Master Cylinder Disassembly

Steps for draining fluid, removing mirror, lever, switch wires, and brake hose.

Clutch Slave Cylinder Disassembly

Steps for disassembling the clutch slave cylinder.

Slave Cylinder Assembly

Assembling slave cylinder, installing insulator, connecting hose, and filling fluid reservoir.

Starter Clutch Disassembly Steps

Removing starter clutch bolt, assembly, spacer, and primary drive gear.

Starter Clutch Assembly Steps

Installing thrust washer, idle gear shaft, springs, plungers, rollers, and starter clutch cover.

Clutch Cover Installation Steps

Installing the clutch cover and filling the crankcase with oil.

Gearshift Linkage

Gearshift Linkage Removal

Steps for removing the gearshift linkage, including draining oil and removing covers.

Gearshift Linkage Installation

Installing shift drum cam plate and washer, neutral stopper arm, spring, and arm bolt.

Gearshift Linkage Installation Steps

Assembling gearshift spindle, installing washer, stopper arm, collar, spring, and oil pump drive.

Gearshift Linkage Final Installation

Aligning punch marks and installing gearshift pedal assembly and left crankcase cover.

Alternator

Flywheel Removal

Steps for removing the alternator cover and flywheel.

Stator Removal

Removing the seat, cover, alternator coupler, and stator.

Flywheel Installation

Installing woodruff key, flywheel, and alternator cover.

Cylinder Head/Valve

Torque Values

Torque specifications for cylinder head and camshaft components.

Camshaft Removal

Draining coolant and oil, removing radiator, cylinder head covers, and cam chain guide.

Camshaft Removal Steps

Rotating crankshaft, removing rear cylinder cam sprocket bolts, and cleaning sprockets.

Camshaft Removal Details

Removing camshaft holder dowel pins, intake/exhaust camshafts, and cam sprockets.

Cam Inspection

Measuring cam lobe diameter and checking for wear.

Cylinder Head Removal

Loosening hose clamps, removing water pipes, O-rings, oil pipe, and cam chain tensioner.

Cylinder Head Removal Steps

Removing tensioner slipper, cylinder head bolts, and cylinder heads.

Cam Chain Guide and Tensioner Inspection

Inspecting cam chain guide, tensioner, slipper, and spring.

Cylinder Head Disassembly

Removing rocker arm shaft and rocker arms.

Valve Spring Compressor Use

Removing valve spring cotters, retainers, springs, and valves.

Cylinder Head Inspection

Checking spark plug hole and valve areas for cracks, and cylinder head for warpage.

Rocker Arm Inspection

Inspecting rocker arms for wear and measuring I.D.

Rocker Arm Shaft and Spring Inspection

Measuring rocker arm shaft O.D. and clearance, and inspecting spring.

Valve Stem-to-Guide Clearance

Inspecting valve stem and measuring valve guide I.D.

Valve Guide Replacement

Procedure for replacing valve guides, including heating and reaming.

Valve Seat Inspection/Refacing

Cleaning valves, inspecting valve face, and refacing valve seats.

Cylinder Head Assembly

Installing valve stem seals, springs, retainers, and cotters.

Cylinder Head Installation

Cleaning cylinder head, installing dowel pins, gaskets, and cam chain guides.

Cylinder Head Installation Steps

Installing tensioner base, cylinder head bolts, and checking alignment.

Camshaft Installation

Lubricating camshafts and installing oil pipes and water hoses.

Camshaft Installation Steps

Placing camshafts, indexing sprockets, and installing camshaft holders.

Camshaft Installation Alignment

Aligning punch marks, positioning camshafts, and tightening camshaft holder bolts.

Camshaft Installation Torque

Aligning T2.4 mark, positioning camshafts, tightening front cylinder camshaft holders, and installing other cam sprocket bolts.

Camshaft Installation Final Steps

Tightening tensioner base bolts, installing oil pipes, and releasing tensioner.

Camshaft Installation Finalization

Lubricating camshaft, adjusting valve clearance, and installing head cover gaskets.

Crankcase

Crankcase Disassembly

Removing upper crankcase bolts, mainshaft bearing holder, and lower crankcase bolts.

Crankcase Disassembly Steps

Removing output gear case, separating crankcase, and removing countershaft bearing.

Crankcase Assembly Procedure

Installing shift fork, shift drum, transmission, crankshaft, and connecting rods.

Crankcase Assembly Mating Surfaces

Cleaning mating surfaces, applying sealant, and assembling crankcase halves.

Crankcase Assembly Tightening

Tightening upper crankcase bolts, installing mainshaft bearing holder, and output gear case.

Crankshaft/Piston

Connecting Rod Removal

Separating crankcase, checking rod side clearance, and removing bearing caps.

Piston Removal

Removing piston pin clips, piston pin, and piston.

Piston/Piston Ring Inspection

Measuring ring-to-groove clearance and inspecting piston.

Piston/Piston Ring Inspection Details

Measuring ring end gap, piston O.D., cylinder bore, and clearances.

Crankshaft Removal

Removing crankshaft and cam chain.

Connecting Rods Bearing Inspection

Inspecting bearing inserts and installing bearing caps.

Main Bearings Inspection

Inspecting bearing inserts, cleaning journals, and installing main bearings.

Bearing Selection

Selecting replacement bearings based on rod and crankpin codes.

Crankshaft Installation

Installing main bearings and crankshaft.

Piston and Rod Installation

Cleaning pistons, installing rings, and staggering gaps.

Piston and Rod Installation Steps

Assembling pistons and connecting rods with grease and aligning marks.

Piston and Rod Installation Details

Installing rod/piston assemblies, compressing rings, and using rubber hose for crankshaft protection.

Connecting Rod Cap Installation

Installing and torquing connecting rod caps, and checking rod movement.

Transmission

Transmission Inspection

Checking gear dogs, holes, teeth, bushings, and mainshaft/countershaft O.D. and clearances.

Transmission Disassembly

Separating crankcase, removing dowel pins, and inspecting gear backlash.

Transmission Gear Inspection

Measuring gear I.D., O.D., bushings, and calculating clearances.

Drive Gear Removal

Removing dowel pin, O-rings, output gear case, and bearing lock nut.

Countershaft Bearing Replacement

Replacing countershaft bearings, unstaking lock nut, and removing outer race.

Countershaft Installation Steps

Attaching bearing holder, installing lock nut, and staking it.

Output Driven Gear Removal

Removing oil seal, bearing holder, lock nut, and driven gear.

Output Driven Gear Bearing Replacement

Replacing bearings and oil seals in the output gear case.

Output Driven Gear Installation

Installing bearing holder, new bearing, shim, and output driven gear.

Output Driven Gear Installation Torque

Attaching bearing holder, installing new inner race lock nut, and staking it.

Drive Train

Gear Tooth Contact Pattern Check

Applying Prussian Blue to pinion teeth and checking contact pattern.

Gear Tooth Contact Pattern Evaluation

Evaluating gear tooth contact pattern and replacing shims.

Backlash Inspection

Measuring gear backlash using a dial indicator and comparing measurements.

Countershaft Inspection Clearance

Measuring clearance between bearing and spacer.

Front Wheel/Suspension

Disassembly

Removing brake disc mounting bolts and discs, side collar, and seals.

Hydraulic Brake

Master Cylinder Assembly

Assembling master cylinder, coating parts with fluid, and installing piston.

Rear Wheel/Suspension/Brake

Battery/Charging System

Ignition System

Troubleshooting

Troubleshooting ignition system problems like engine not starting or running poorly.

Electric Starter

Switches

Technical Features

Troubleshooting

'83 V45 Sabre, Magna Addendum

Maintenance Schedules V45 SABRE-VF750S

Maintenance schedule for V45 SABRE with service intervals.

Maintenance Schedules V45 MAGNA-VF750C

Maintenance schedule for V45 MAGNA with service intervals.

Clutch Disassembly

Removing snap ring, clutch lifter plate, bearing, guide, rod, lock nut, and clutch plates.

Clutch Assembly

Installing clutch outer guide, needle bearing, and clutch outer.

Clutch Assembly Steps

Installing clutch center A and washer, clutch inner, one-way clutch, and clutch center B.

Clutch Assembly Mainshaft

Placing transmission in 6th gear, tightening lock nut, installing lifter rod, plate, guide, bearing, and snap ring.

Countershaft Inspection

Checking countershaft spacer selection and measuring clearance.

Countershaft Installation

Installing countershaft, gears, washers, and collar.

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