1981 John Deere SPORTFIRE 440 Snowmobile Service Manual
Shop manual for the 1981 John Deere SPORTFIRE 440 Snowmobile, covering engine, fuel, electrical, power train, suspension, and service tools. PN TM-1222 (Dec-81)
Manual Preview
Sample pages from the 1981 John Deere SPORTFIRE 440 Snowmobile Service Manual manual
Purchase & Download
Models Covered & Key Technical Specifications
1981 John Deere SPORTFIRE 440 Snowmobile Service Manual
Shop manual for the 1981 John Deere SPORTFIRE 440 Snowmobile, covering engine, fuel, electrical, power train, suspension, and service tools. PN TM-1222 (Dec-81).
- Machine Identification: For proper operation, 120,001M is the standard serial number range for the 1981 model.
- Engine Specifications: Technical Data: TA440B Piston-Ported is the engine model designation.
- Fuel System: Maintenance: Use regular unleaded gasoline with an anti-knock index of 88 or higher.
- Electrical System: Diagnostic Testing: 120 Watts is the charge system capacity.
- Power Train: Component Specifications: The drive sheave is a John Deere (Comet) 102 C.
- Suspension: Alignment Procedures: Ski alignment requires a 1-5/16 inch (33.34 mm) measurement between the tie rod and center of the tie rod end.
Professional Workshop Service Manual & Technical Specifications
Thorough Field Manual: John Deere SPORTFIRE 440 Snowmobile (1981) - Comprehensive Service Manual Field-Reference
Operational-Scope: All aspects of the 1981 John Deere SPORTFIRE 440 Snowmobile. // Year-Coverage: 1981 Model Year Logic // Operational-Framework: Comprehensive Service Manual Data.
| Service-Nexus | Parameters | Architecture |
|---|---|---|
| Ignition System | Capacitor Discharge Ignition | CDI |
| Fuel System | Mikuni Carburetor | Pilot, Main, Power Jet Systems |
| Power Train | Drive Sheave, Driven Sheave, Chain Case | Clutch and Drive Chain |
| Suspension | Slide Suspension, Ski & Steering | Wear Bars, Springs, Shock Absorbers |
| Electrical System | Lighting, Ignition, Starting | Alternator, CDI Unit, Starter Motor |
Integrated service sections encompass:
- Engine components and systems
- Fuel delivery and carburetor
- Electrical system diagnosis and repair
- Power train and clutch operation
- Suspension and steering adjustments
- Essential and convenience service tools
Service procedures are documented for the engine, including disassembly and assembly of the TA440B Piston-Ported engine. Calibration requirements are specified for the Mikuni carburetor, detailing adjustments for altitude and temperature. Electrical system documentation covers testing of the CDI ignition, lighting system, and starter motor. Suspension service documentation covers wear bars, springs, and steering components. Disassembly instructions are documented for the drive clutch and driven sheave, ensuring proper operation.
The manual documents torque specifications for critical engine components to ensure proper service interval reliability.
FAQ
Customer Reviews
Read what our customers say about this John Deere Snowmobile manual and share your own experience.
Add a Review
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.
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.
Reviews (5)