- Moto-4 250
- YFM 250
- Serial Numbers:
- 1989: from JY43GG
- 1990: from JY43GJ
- 1991: from JY43GL
1989-1991 Yamaha Moto-4 250, YFM 250 service manual
Models covered in this manual:
File specifications
File type: PDF
Language: English
Number of pages: 320
Printable: Yes
Estimated download time: 1.24 Minutes
$18.99
Pay with Bitcoin
Product Information
Table of contents
General Information 1
- Machine Identification
- Vehicle Identification Number (For USA and CDN)
- Frame Serial Number (Except for USA and CDN)
- Engine Serial Number
- Important Information
- Preparation for Removal and Disassembly
- All Replacement Parts
- Gaskets, Oil Seals, and O-Rings
- Lock Washers/Plates and Cotter Pins
- Bearings and Oil Seals
- Circlips
- Special Tools
- For Tune-Up
- For Engine Service
- For Middle Gear Service
- For Final Gear Service
- For Chassis Service
- For Electrical Components
Specifications 2
- General Specifications
- Maintenance Specifications
- Engine
- Power Train
- Chassis
- Electrical
- General Torque Specifications
- Definition of Units
- Lubrication Points and Lubricant Type
- Engine
- Chassis
- Lubrication Diagrams
- Cable Routing
Periodic Inspection and Adjustment 3
- Introduction
- Periodic Maintenance/Lubrication
- Carriers and Fenders
- Front Carrier and Fender
- Rear Carrier and Fender
- Engine
- Valve Clearance Adjustment
- Timing Chain Tensioner Adjustment
- Idle Speed Adjustment
- Throttle Cable Free Play Adjustment
- Speed Limiter Adjustment
- Spark Plug Inspection
- Ignition Timing Check
- Compression Pressure Measurement
- Engine Oil Level Inspection
- Engine Oil Replacement
- Clutch Adjustment
- Air Filter Cleaning
- Carburetor Joint Inspection
- Fuel Line Inspection
- Crankcase Ventilation Hose Inspection
- Exhaust System Inspection
- Chassis
- Front Brake Lining Inspection
- Rear Brake Pads Inspection
- Rear Brake Lever and Pedal Adjustment
- Front Brake Adjustment
- Drive Select Lever Position Adjustment
- Final Drive Gear Oil Level Inspection
- Final Drive Gear Oil Replacement
- Drive Shaft Dust Boot Inspection
- Steering System Inspection
- Toe-In Adjustment
- Front and Rear Shock Absorbers Adjustment
- Tire Inspection
- Wheel Inspection
- Cable Inspection and Lubrication
- Lever and Pedal Lubrication
- Front Lower Arm Lubrication
- Steering Knuckle Bushing Lubrication
- Steering Shaft Bushing Lubrication
- Electrical
- Battery Inspection
- Fuse Inspection
- Headlight Beam Adjustment
- Headlight Bulb Replacement
Engine Overhaul 4
- Engine Removal
- Preparation for Removal
- Front Carrier and Front Fender
- Rear Carrier and Rear Fender
- Rear Brake Cables
- Exhaust Pipe and Muffler
- Rear Wheel Drive Assembly and Swingarm
- Carburetor
- Wirings and Hoses
- Starter Motor
- Engine Removal
- Engine Disassembly
- Sub Transmission Gear Unit
- Cylinder Head Assembly, Cylinder and Piston
- Starter Pulley and CDI Magneto
- Primary and Secondary Clutches
- Oil Pump and Shifter
- Balancer Drive and Driven Gears
- Crankcase (Left)
- Balancer Shaft, Transmission and Crankshaft
- Recoil Starter (Except for USA)
- Inspection and Repair
- Cylinder Head
- Intake and Exhaust Valve
- Valve Guide
- Valve Seat
- Valve Spring
- Valve Installation
- Cam Shaft
- Rocker Arm and Rocker Arm Shaft
- Timing Chain
- Cam Sprocket and Cam Drive Sprocket
- Timing Chain Guide
- Timing Chain Tensioner
- Tappet Cover and Cam Sprocket Cover
- Cylinder and Piston
- Piston Ring and Piston Pin
- Primary Gears and Starter
- Primary Clutch
- Secondary Clutch
- Oil Pump
- Crankshaft
- Transmission and Shifter
- Oil Delivery Pipe
- Bearings and Oil Seals
- Circlips and Washers
- Crankcase
- Drive Pinion Gear Shim Selection
- Recoil Starter (Except for USA)
- Engine Assembly and Adjustment
- Recoil Starter (Except for USA)
- Crankshaft, Transmission and Balancer Shaft
- Crankcase (Left)
- Balancer Driven and Drive Gears
- Shifter and Oil Pump
- Primary and Secondary Clutches
- Starter Pulley and CDI Magneto
- Cylinder Head Assembly, Cylinder and Piston
- Sub Transmission Gear Unit
- Remounting Engine
Carburetion 5
- Carburetor
- Sectional View
- Removal
- Disassembly
- Inspection
- Assembly
- Installation
- Fuel Level Adjustment
Drive Train 6
- Primary Sheave and Drive Belt
- Removal
- Disassembly
- Inspection
- Assembly
- Installation
- Secondary Sheave
- Removal
- Disassembly
- Inspection
- Assembly
- Installation
- Drive Chain Housing
- Removal
- Disassembly
- Inspection
- Assembly
- Installation
- Jackshaft
- Removal
- Disassembly
- Inspection
- Assembly
- Installation
- Brake
- Brake Pads
- Brake Caliper
- Brake Hose
Chassis 7
- Steering
- Handlebar
- Steering Shaft
- Tie-Rod Ends
- Ski
- Front Suspension
- Struts
- Shock Absorbers
- Rear Suspension
- Slide Rail Suspension
Electrical 8
- Wiring Diagram
- Battery Maintenance
- Charging System
- Ignition System
- Lighting System
Troubleshooting 9
- Engine Troubleshooting
- Electrical Troubleshooting
- Carburetion Troubleshooting
- Chassis Troubleshooting
- The pricing of the manuals, handbooks, and repair guides is determined by the seller, so it is advisable to compare prices before making a purchase.
- Users can find comments and ratings from other buyers on the detail page to assist in their decision-making process.
- Download the repair manual with a lifetime guarantee for access as described in the FAQs.
- For inquiries about the manual, users can use the contact form to reach out to the seller or request assistance from the platform.
How to Download Your Manual - Delivery Policy
Within a minute after completing the payment process, you will receive two emails from us. One for the completed payment and another with the download link. The download link is valid for 3 days.
Lifetime Guarantee
Manuals frequently bought together
Add Comment
Insert Bullet List
Please enter at least one item.
Item:
Item:
Item:
Item:
Item:
Insert Numeric List
Please enter at least one item.
Item:
Item:
Item:
Item:
Item:
Insert Link
Please enter the link of the website
Optionally you can add display text
Insert Email
Please enter the email address
Optionally add any display text
Insert Image
Please enter the link of the image
Insert YouTube Video
Please enter the link of the video
Privacy Policy
This policy contains information about your privacy. By posting, you are declaring that you understand this policy:
- Your name, rating, website address, town, country, state and comment will be publicly displayed if entered.
- Aside from the data entered into these form fields, other stored data about your comment will include:
- Your IP address (not displayed)
- The time/date of your submission (displayed)
- Your email address will not be shared. It is collected for only two reasons:
- Administrative purposes, should a need to contact you arise.
- To inform you of new comments, should you subscribe to receive notifications.
- A cookie may be set on your computer. This is used to remember your inputs. It will expire by itself.
This policy is subject to change at any time and without notice.
Terms and Conditions
These terms and conditions contain rules about posting comments. By submitting a comment, you are declaring that you agree with these rules:
- Although the administrator will attempt to moderate comments, it is impossible for every comment to have been moderated at any given time.
- You acknowledge that all comments express the views and opinions of the original author and not those of the administrator.
- You agree not to post any material which is knowingly false, obscene, hateful, threatening, harassing or invasive of a person's privacy.
- The administrator has the right to edit, move or remove any comment for any reason and without notice.
Failure to comply with these rules may result in being banned from submitting further comments.
These terms and conditions are subject to change at any time and without notice.
{"commentics_url":"\/\/www.repairloader.com\/comments\/","page_id":171424,"enabled_country":false,"country_id":0,"enabled_state":false,"state_id":0,"enabled_upload":false,"maximum_upload_amount":3,"maximum_upload_size":5,"maximum_upload_total":5,"captcha":true,"captcha_url":"https:\/\/www.repairloader.com\/comments\/frontend\/index.php?route=main\/form\/captcha&page_id=171424","cmtx_wait_for_comment":"cmtx_wait_for_comment","lang_error_file_num":"A maximum of %d files are allowed to be uploaded","lang_error_file_size":"Please upload files no bigger than %.1f MB in size","lang_error_file_total":"The total size of all files must be less than %.1f MB","lang_error_file_type":"Only image file types are allowed to be uploaded","lang_text_loading":"Loading ..","lang_placeholder_country":"Country","lang_placeholder_state":"State","lang_text_country_first":"Please select a country first","lang_button_submit":"Add Comment","lang_button_preview":"Preview","lang_button_remove":"Remove","lang_button_processing":"Please Wait.."}
{"commentics_url":"\/\/www.repairloader.com\/comments\/","language":"english"}
Comments