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Manuals
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Onan Manuals
Engine
B48M
Service manual
Onan B48M Service Manual
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Table Of Contents
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Engine Safety Precautions
Table of Contents
General Information
Engine Model Reference
Specifications
Tune-Up Specifications
Dimensions and Clearances (for BF Engine)
Assembly Torques
Bolt Torque
Dimensions and Clearances (for B43M and B48M Engines)
Assembly Torques and Special Tools
Dimensions and Clearances (for CCKA Engine)
Engine Troubleshooting
Oil System
Crankcase Oil
Oil Filter
Crankcase Breather
Pressure Lubrication
Oil By-Pass Valve
Crankcase Breather for BF, B43 and B48
Oil Pump Assembly
Fuel System (for BF, B43M and B48M)
Carburetor Cleaning and Inspection
Exploded View of Carburetor
Carburetor Disassembly and Repair
Fuel Pump Disassembly
Replacing Needle and Valve Seat
Carburetor Float Adjustment
"Nikki" Carburetor Adjustment Procedure (for 1986 Model 226, 446, 448 and 648 Tractors)
Carburetors with Spring Assist Choke
Carburetors Without Spring Assist Choke
Craburetor Adjustments
Governor
Final Adjustment
Main Fuel and Idle Valve Adjustment
Air Cleaner
Variable Speed Governor Adjustments
Air Cleaner Assembly
Fuel System (for CCKA)
Carburetor
Carburetor Idle Adjustment
Gasoline Idle Adjustment
Cleaning
Carburetor Cleaning
Low Speed Adjustment
High Speed Adjustment
Governor Adjustment
Engine Disassembly
Suggested Disassembly Order
Suggested Assembly Procedure
Tappet Adjustment
Valve System
Flywheel
Gear Cover
Governor Cup
Valve Clearance
Timing Gears
Gear Cover Assembly
Governor Cup Detail
Pistons and Connecting Rods
Inspection
Piston Inspection
Timing Gear Removal and Installation
Connecting Rod Bushing Replacement
Connecting Rod Inspection
Connecting Rod Bearings Inspection (CCKA)
Removing Piston Rings
Fitting Pistons
Fitting Piston Rings
Connecting Rod Alignment
Rod Bearing Replacement (Piston in Engine)
Cylinder Block
Repair
Methods of Measuring the Diameter of a Cylinder
Crankshaft
Crank and Cam Bearings
Crosshatching
Camshaft Bearing
Crankshaft Endplay
Checking Bearing Clearance with Plastigauge
Bearings for Rear Bearing Plate
Front Main Bearing Installation
Oil Seals
Assembly
Measuring Bearing Clearance
Gear Cover and Rear Bearing Plate Oil Seals
Installation of Piston in Cylinder
Cylinder Heads
Installing Piston
Cylinder Head Torque Sequence
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Engine Model Reference
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Tune-Up Specifications
3
Specifications
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