Lawn Tractor · 2007Unverified
Craftsman 917.28721
Craftsman 917.28721 — YS 4500 Series · 21 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
21 hp
Hover a source tag to verify
Overview
DistributorCraftsman (a part of Sears)Reference
ManufacturerAYPReference
Lawn tractorReference
Two-wheel driveReference
SteeringmanualReference
Open operator station.Reference
Engine
21HP Briggs & Stratton gasolineReference
Fuel tank9.5 LReference
Briggs & Stratton 311877Reference
gasolineReference
air-cooledReference
Power (gross)15.7 kWReference
Air cleanerpaperReference
StarterelectricReference
Starter volts12Reference
SparkplugChampion RC12YCReference
Sparkplug gap0.762 mmReference
Oil capacity1.7 LReference
Transmission
6-speed gearReference
TransmissionDana D6800Reference
TypegearReference
Gears6 forward and 1 reverseReference
Craftsman 917.28721 attachments
42" mid-mount mower deckReference
snowblowerReference
bladeReference
Electrical
GroundnegativeReference
Charging amps5 (battery)Reference
Charging amps3 (headlights)Reference
Battery CCA230Reference
Battery volts12Reference
Battery AH28Reference
Battery GroupU1RReference
Attachment overview
42" mid-mount mower deckReference
SnowblowerReference
BladeReference
42" Mower deck
Typemid-mount CraftsmanReference
Type2-blade with manual liftReference
Cutting width106 cmReference
Cut height2 to 10 cmReference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.