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Suzuki RM85 User Manual

Suzuki RM85
206 pages
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Part No. 99011-02B82-01A
April, 2006 EN
TK
RM85/L
OWNER’S SERVICE MANUAL

Table of Contents

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Suzuki RM85 Specifications

General IconGeneral
Engine Type2-stroke, liquid-cooled, single cylinder
Displacement84.7cc
Bore x Stroke48.0 mm x 46.8 mm
IgnitionCDI
Transmission6-speed constant mesh
Final DriveChain
Front BrakesSingle hydraulic disc
Rear BrakesSingle hydraulic disc
Compression Ratio9.5:1
Front SuspensionInverted telescopic, coil spring, oil damped
Rear SuspensionSwingarm type, coil spring, oil damped
Front Tire70/100-17
Rear Tire90/100-14
Overall Width765 mm
Overall Height1, 110 mm
Wheelbase1, 240 mm (48.8 in.)
Curb Weight73 kg (161 lbs.)
Fuel Tank Capacity5.5 L

Summary

Foreword and Safety Information

Warning, Caution, and Note Symbols

Explains the meaning of warning, caution, and note symbols and words.

General Considerations for Riding

Wear a Helmet and Goggles

Importance of protective gear for rider safety.

Wear Protective Gear

Guidelines for appropriate riding attire to prevent injuries.

Inspect Machine Before Riding

Pre-ride inspection checklist for safety and performance.

No Passengers

Suzuki RMs are designed for single rider use only.

Weight Limit

Specifies the maximum weight capacity for the rider.

Ride With Teammates

Encourages safe group riding and mutual support.

Practice on Level Ground

Advice on finding a safe area for initial riding practice.

Know Your Limits

Emphasizes riding within personal skill and condition limits.

Conclusion

Summarizes rider responsibility and attention for safe riding.

Serial Number Location

Warnings for Servicing

Engine Exhaust Hazards

Warning about running the engine indoors due to carbon monoxide.

Flammable Fuel Hazards

Caution regarding fuel flammability and avoiding sparks/flames.

Hot Engine and Muffler Burns

Warning that hot engines and mufflers can cause burns.

Hazardous Fluids (Brake/Coolant)

Precautions for handling brake fluid and engine coolant.

Precautions for Servicing

Replacement Parts

Emphasizes using genuine SUZUKI parts for optimal performance and longevity.

Symbol Marks and Materials

General Instructions

Location of Parts

Identifies and illustrates key motorcycle components and controls.

Fuel and Oil Recommendation

Specifies recommended fuel and oil types and mixing ratios.

Instructing Young Rider

Provides guidance for parents on teaching young riders safe operation.

Starting Engine

Step-by-step instructions for starting the cold and warm engines.

Starting Off

Procedures for starting the motorcycle and shifting gears.

Braking

Techniques for slowing down and stopping the motorcycle safely.

Stopping Engine

Steps to properly shut down the motorcycle engine.

Break-in (Running-in)

Guidelines for the initial engine break-in period for new motorcycles.

Periodic Maintenance

Inspection Before Practice

Outlines inspection items before practice and race.

Inspection Before Race

Lists items to check before racing, including practice checks.

Spark Plug

Details inspection and maintenance of the spark plug.

Air Cleaner

Procedures for removing, washing, and installing the air cleaner element.

Transmission Oil

Information on checking and changing transmission oil.

Engine Coolant

Steps for checking and replenishing engine coolant levels.

Clutch Cable

Adjusting the play in the clutch cable for proper operation.

Throttle Cable

Adjusting the throttle cable play to prevent unintended acceleration.

Fuel Hose

Inspection and replacement schedule for the fuel hose.

Fuel Valve

Procedure for removing and cleaning the fuel valve.

Cylinder Head, Cylinder and Piston

Inspection and cleaning of cylinder head, cylinder, and piston components.

Exhaust Silencer

Inspection and replacement of the exhaust silencer components.

Drive Chain and Sprockets

Inspecting and adjusting drive chain slack and sprocket condition.

Drive Chain Guide, Buffer, Tensioner Roller

Inspecting chain guides, buffers, and tensioner rollers for wear.

Brakes

Checking brake fluid level and brake pad wear.

Front Fork

Inspecting the front fork for smooth movement and oil leaks.

Rear Suspension

Inspecting rear suspension for smooth movement and bolt tightness.

Wheels and Tires

Inspecting wheel rims, spoke nipples, and tire pressure.

Steering

Inspecting steering for play and binding, and checking stem nut tightness.

Lubrication

Schedule and procedure for lubricating moving parts.

Tightening Torque

Table of specified tightening torques for various components.

Troubleshooting

Engine Troubleshooting

Diagnosing and resolving engine-related starting and running issues.

Chassis Troubleshooting

Troubleshooting common chassis and suspension problems.

Machine Tuning

Carburetor Tuning

Adjusting carburetor settings for optimal air/fuel mixture.

Front Fork Tuning

Adjusting front fork damping and oil level for rider preference.

Rear Suspension Tuning

Adjusting rear suspension settings for rider and course conditions.

Engine Removal and Installation

Engine Removal

Step-by-step guide for removing the engine from the motorcycle frame.

Engine Installation

Procedures for reinstalling the engine back into the motorcycle frame.

Cylinder, Piston and Exhaust Valve

Construction

Exploded view of cylinder, piston, and exhaust valve assembly.

Engine Top End

Procedures for removing cylinder head, cylinder, and related parts.

Piston Removal

Detailed steps for removing the piston and its components.

Exhaust Valve Removal

Instructions for removing the exhaust valve assembly.

Cylinder Head Inspection

Inspection procedures for the cylinder head for damage and distortion.

Cylinder Inspection

Inspection of the cylinder bore, cracks, and wear.

Piston and Piston Ring Inspection

Inspecting piston diameter, ring groove clearance, and ring end gap.

Exhaust Valve Inspection

Inspecting exhaust valve, guide, shaft, and breather hoses for wear.

Conrod Inspection

Measuring conrod small end bore and checking play.

Piston Ring and Piston Reassembly

Steps for correctly reassembling piston rings and piston.

Exhaust Valve Reassembly

Procedure for reassembling the exhaust valve components.

Cylinder Reassembly

Instructions for reassembling the cylinder onto the crankcase.

Clutch

Construction

Exploded view of clutch assembly components.

Clutch Plate Removal

Steps to remove clutch plates and pressure plate.

Clutch Plate Inspection

Measuring drive and driven plate thickness and checking for wear.

Clutch Spring Inspection

Inspecting clutch spring free length for serviceability.

Clutch Rack and Pinion Inspection

Inspecting clutch rack and pinion for wear and damage.

Clutch Plate Reassembly

Procedure for reassembling clutch plates and pressure plate.

Clutch Sleeve Hub Removal

Steps for removing the clutch sleeve hub assembly.

Clutch Sleeve Hub Inspection

Inspecting clutch sleeve hub and related gears for wear.

Clutch Sleeve Hub Reassembly

Procedure for reassembling the clutch sleeve hub.

Kick Starter

Construction

Exploded view of kick starter components.

Kick Starter Removal

Step-by-step procedure for removing the kick starter assembly.

Kick Starter Inspection

Inspecting kick starter parts for wear and damage.

Kick Starter Reassembly

Procedures for reassembling the kick starter mechanism.

Gearshifting

Construction

Exploded view of the gearshift linkage components.

Gearshift Linkage Removal

Steps for removing the gearshift shaft, pawls, and cam.

Gearshift Linkage Inspection

Inspecting gearshift shaft, pawls, and cam stopper for damage.

Gearshift Linkage Reassembly

Procedures for reassembling the gearshift linkage components.

Transmission and Crankshaft

Construction

Exploded view of transmission and crankshaft assemblies.

Engine Bottom Side

Parts to remove before disassembling the crankcase.

Primary Drive Gear Removal

Procedure for removing the primary drive gear.

Crankcase Separation

Steps for separating the engine crankcase halves.

Transmission Removal

Removing gearshift forks, shafts, driveshaft, and countershaft.

Crankshaft Removal

Procedure for removing the crankshaft from the crankcase.

Transmission Inspection

Inspecting transmission gears, forks, and shafts for wear.

Crankshaft Inspection

Measuring crankshaft runout and web-to-web width.

Oil Seal Inspection, Removal and Installation

Inspecting, removing, and installing oil seals.

Bearing Inspection, Removal and Installation

Inspecting, removing, and installing bearings.

Crankshaft Installation

Procedure for installing the crankshaft into the crankcase.

Transmission Reassembly

Reassembling the transmission gears, shafts, and forks.

Crankcase Reassembly

Reassembling the engine crankcase halves.

Primary Driven Gear Reassembly

Reassembling the primary driven gear onto the crankshaft.

Fuel System

Construction

Exploded view of the fuel system components.

Carburetor Removal and Disassembly

Steps to remove and disassemble the carburetor.

Carburetor Inspection

Inspecting carburetor parts, jets, and float height.

Carburetor Reassembly

Procedures for reassembling the carburetor after inspection.

Reed Valve Removal

Steps to remove the reed valve assembly.

Reed Valve Inspection

Inspecting reed valve for damage.

Reed Valve Reassembly

Reassembling the reed valve assembly.

Cooling System

Construction

Exploded view of the cooling system components.

Engine Coolant Replacement

Procedures for draining and refilling engine coolant.

Radiator Cap Inspection

Checking the radiator cap's pressure release function.

Radiator Removal

Steps for removing the radiator assembly.

Cooling System Inspection

Inspecting radiator hoses, mounting, and fins.

Radiator Installation

Reinstalling the radiator assembly.

Water Pump Removal and Inspection

Removing and inspecting the water pump components.

Water Pump Reassembly

Procedures for reassembling the water pump.

Electrical System

Construction

Exploded view of electrical system components.

Electrical Circuit

Diagram illustrating the motorcycle's electrical wiring connections.

Ignition System

Testing ignition coil primary peak voltage for proper function.

Ignition Coil Inspection

Measuring ignition coil electrical resistance.

CDI Unit Inspection

Measuring voltage at CDI unit lead wires.

Stator Coil Inspection

Measuring stator coil electrical resistance.

Magneto Rotor and Stator Removal and Reassembly

Procedures for removing and reinstalling magneto rotor and stator.

Front and Rear Wheels

Construction

Exploded view of front and rear wheel assemblies.

Front Wheel Removal

Steps to remove the front wheel.

Front Wheel Inspection

Inspecting axle shaft, wheel rim, and wheel bearings.

Front Wheel Bearing Removal

Removing front wheel bearings using specialized tools.

Front Wheel Bearing Reassembly

Reassembling front wheel bearings with grease and tools.

Front Wheel Installation

Reinstalling the front wheel onto the motorcycle.

Rear Wheel Removal

Steps to remove the rear wheel.

Rear Wheel Inspection

Inspecting rear axle shaft, wheel rim, and bearings.

Rear Wheel Bearing Removal

Removing rear wheel bearings using specialized tools.

Rear Wheel Bearing Reassembly

Reassembling rear wheel bearings with grease and tools.

Rear Wheel Installation

Reinstalling the rear wheel onto the motorcycle.

Disc Plate Replacement

Replacing the brake disc plates on front and rear wheels.

Rear Sprocket Replacement

Procedure for replacing the rear sprocket.

Front and Rear Brakes

Construction

Exploded view of front and rear brake system components.

Brake Fluid Air Bleeding

Procedure for removing air from the brake hydraulic system.

Brake Fluid Replacement

Steps to replace the brake fluid in the system.

Brake Pad Replacement

Procedures for replacing front and rear brake pads.

Brake Disc Inspection

Measuring front and rear brake disc thickness and runout.

Brake Caliper Removal and Disassembly

Steps to remove and disassemble the brake calipers.

Caliper Inspection

Inspecting caliper cylinder wall, piston, and rubber parts for damage.

Caliper Cleaning

Cleaning brake caliper ports and components.

Front Caliper Reassembly

Procedures for reassembling the front brake caliper.

Rear Caliper Reassembly

Procedures for reassembling the rear brake caliper.

Master Cylinder Inspection

Inspecting master cylinder bore, piston, and dust boot for damage.

Front Master Cylinder Reassembly

Reassembling the front master cylinder components.

Rear Master Cylinder Reassembly

Reassembling the rear master cylinder components.

Brake Pedal Removal and Reassembly

Removing and reinstalling the brake pedal assembly.

Front Fork and Steering

Construction

Exploded view of front fork and steering assembly.

Front Fork Removal

Steps to remove the front fork assemblies.

Front Fork Disassembly

Procedures for disassembling the front fork components.

Front Fork Inspection

Inspecting inner/outer tubes, damper rod, and springs.

Front Fork Reassembly

Procedures for reassembling the front fork components.

Front Fork Reinstallation

Reinstalling the front forks onto the motorcycle.

Steering Removal

Steps to remove the steering stem and related parts.

Steering Inspection

Inspecting steering bearing races and stem for wear/distortion.

Steering Bearing Replacement

Replacing steering stem bearings and races.

Steering Reassembly

Reassembling the steering system components.

Rear Suspension

Rear Shock Absorber Removal

Steps to remove the rear shock absorber unit.

Spring Removal

Procedures for removing the spring from the shock absorber.

Rear Shock Absorber Inspection

Inspecting shock absorber for oil leaks and component damage.

Spring Installation

Installing the spring and adjusting set length.

Rear Shock Absorber Installation

Reinstalling the rear shock absorber onto the frame.

Oil Replacement Procedure

Detailed steps for replacing the oil in the rear shock absorber.

Rear Shock Absorber Disassembly and Inspection

Disassembling and inspecting the rear shock absorber for wear.

Rear Shock Absorber Reassembly

Procedures for reassembling the rear shock absorber.

Swingarm Removal

Steps to remove the swingarm and related components.

Swingarm Inspection

Measuring swingarm pivot shaft runout and inspecting components.

Swingarm Bearing Replacement

Replacing swingarm bearings and collars.

Swingarm Reassembly

Reassembling the swingarm and tightening pivot nut.

Rear Suspension Linkage Removal

Removing the rear suspension linkage components.

Rear Suspension Linkage Inspection

Inspecting linkage components for damage and smooth movement.

Cushion Lever and Cushion Rod Bearing Replacement

Replacing bearings in cushion lever and rod.

Rear Suspension Linkage Reassembly

Reassembling the rear suspension linkage and tightening nuts.

Servicing Information

Service Data

Table of standard and limit measurements for engine, transmission, and clutch.

Special Tools

List of specialized tools required for maintenance and repair.

Wire, Cable and Hose Routing

Diagrams showing correct routing for wires, cables, and hoses.

Specifications

Technical specifications for dimensions, engine, transmission, and chassis.

Setting Data

A template for recording tuning and setting data for events.

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