Onan Gasoline Engine Service Manual (16, 18, 20 & 24HP) - John Deere

Comprehensive service documentation for Onan 16, 18, 20 & 24 HP Gasoline Engines, covering repair procedures, specifications, and diagrams. Ref: CTM2.

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Document Details

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Document Number / Seller:
25884 / William Allen
File Size:
16.96 MB
File Type:
PDF
Language:
English
Printable:
Yes
Category:
Engines (Gasoline)
Last updated / verified
May 5, 2025

Models Covered & Key Technical Specifications

Onan Engines (CTM2) - John Deere 16, 18, 20 & 24HP

Documentary Advanced Repository | Portfolio.

  • System Storage Capacity: 16.96 MB is the file size for the complete manual Documentation.
  • Core Tolerance Values: 2 ± 1 N·m (18 ± 9 lb-in.) specifies the torque for the Breather Valve Cover Bolt Setting.
  • Specific Consumption Data: 11 ± 3 N·m (97 ± 27 lb-in.) indicates the torque for the lift bracket cap screws Benchmarks.
  • Critical Heat Dissipation: 12 ± 1 N·m (106 ± 9 lb-in.) is the required torque for the starter mounting cap screws Requirements.
  • Universal Footprint Data: 19 ± 2 N·m (168 ± 18 lb-in.) specifies the torque for the Gear Housing Cap Screws Range.
  • Calibrated Tank Capacity: 35 ± 1 N·m (310 ± 9 lb-in.) is the torque for the Bearing Plate Cap Screws Threshold.

Professional Workshop Service Manual & Technical Specifications

OEM-Grade Performance Training Manual: Engines (Gasoline) Onan Gasoline Engine Service Manual (16, 18, 20 & 24HP) - John Deere Blueprint-Vault

Specification System-Path Calibration-Data
Engine Model John Deere Onan
Horsepower 16-24 HP 12kW - 18kW
Bore 82.55 mm - 90.42 mm 3.25 in. - 3.56 in.
Stroke 66.55 mm - 76.20 mm 2.62 in. - 3.00 in.
Displacement 710 cm³ - 983 cm³ 43.3 cu. in. - 60 cu. in.

System-Identifier: Onan Engines // Repair-Classification: Gasoline Engine Manual // System-Identifier: John Deere

Technical content addresses engine removal, theory of operation, diagnostic, and testing procedures for Onan engines. Detailed diagrams and concise instructions are provided in an easy-to-use format, emphasizing diagnosis and analysis.

H4 Header: Engine Specifications H4 Header: Intake Manifold and Cylinder Heads H4 Header: Flywheel Procedures H4 Header: Camshaft Specifications H4 Header: Starter System Diagnosis

The document includes coverage of engine specifications, intake manifold, and cylinder heads. Brake system specifications are included for reference on torque values. Safety procedures are documented, and fluid capacities are listed within the detailed diagrams. Tool requirements are also documented.

...documents torque specifications for engine components to ensure proper seal compression uniformity.

FAQ

Check the **standard** breather valve cover bolt torque setting. keyboard_arrow_down

2 ± 1 N·m (18 ± 9 lb-in.) is the specified torque for the breather valve cover bolt.

What does the **necessary** torque specification mean for flywheel cap screws? keyboard_arrow_down

51 ± 3 N·m (38 ± 2 lb-ft) is the specified torque for B43E, B43G, B48G, and T260 engines' flywheel cap screws, ensuring secure mounting.

Reference the **recommended** engine oil pressure sender torque specification. keyboard_arrow_down

12 ± 1 N·m (106 ± 9 lb-in.) is the recommended torque for the oil filter adapter attaching cap screw.

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Reviews (3)

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Rated 4 out of 5 stars
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This manual has everything you need to know about servicing my John Deere Onan engine. The download process was super smooth, and I received my link almost instantly. Highly recommend!
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The troubleshooting sections are particularly useful. I appreciated the quick email support when I had questions about the manual. They responded almost immediately!