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Harley-Davidson Dyna Fat Bob

Maintenance specs for 1 variant of the Harley-Davidson Dyna Fat Bob — from 2012 to 2017.

20122017 Harley-Davidson Dyna Fat Bob

Twin Cam 103 (1690cc) Air-Cooled V-Twin (Twin Cam 103) · Belt

73 hp / 93 lb-ft

Engine Oil

Weight20W-50
Capacity3.5 qt

Transmission

Type6-Speed Cruise Drive
FluidHarley-Davidson Transmission Lube
Drain & fill1 qt
Full capacity1 qt

Brake Fluid

TypeDOT 4
Shop DOT 4

Fuel

Tank4.7 gal
TypeRegular 87

Tires

Front130/70B18
Rear180/70B16
Pressure (front)36 PSI
Pressure (rear)40 PSI

Battery

Group sizeYTX20L-BS
Shop group YTX20L-BS battery

Spark Plugs

Gap0.038 in
Shop spark plugs

Service Intervals

Oil change5,000 mi
Trans service10,000 mi
Brake fluid24,000 mi
Spark plugs20,000 mi
Timingchain (no scheduled replacement)
Air filter10,000 mi
Drive belt100,000 mi