The Murray 3643 is a lawn tractor model with a rated output of 8 hp — making it one of the more compact options in its class. It was produced from 1975 to 1978. Under the hood is a 1-cylinder petrol air-cooled engine, driving through two-wheel drive with a 3-speed gearbox. Listed weight is 192 kg, and it is aimed at jobs of around up to 200 ac. Recorded specifications in UK and US units are listed below.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
8 hp
Weight
192 kg
Catalogue coverage
Variants represented
2
Richest spec table
39 rows
Recorded power
8 hp
Transmissions
3-speed gear
Production years
1975-1978
Verified variants
0
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Overview
ManufacturerMurrayReference
Lawn tractorReference
Built in Lawrenceburg, Tennessee, USAReference
Two-wheel driveReference
Manual steeringReference
Disc brakesReference
Open operator station.Reference
Engine
8HP Briggs & Stratton 1-cyl gasolineReference
Briggs & StrattonReference
gasolineReference
1-cylinderReference
air-cooled vertical-shaftReference
Power6.0 kWReference
Starter typemanual recoilReference
Transmission
3-speed gearReference
Typebelt-driven gearReference
Gears3 forward and 1 reverseReference
PTO & Hydraulics
Mid PTOindependentReference
ClutchmanualReference
Dimensions
Weight192 kgReference
Front tire15x6.00Reference
Rear tire18x8.50Reference
Lawn/turf front15x6.00Reference
Lawn/turf rear18x8.50Reference
Murray 3643 attachments
36" mid-mount mower deckReference
snowblowerReference
bladeReference
3643 Serial Numbers
19755-3643Reference
19766-3643Reference
19777-3643Reference
19788-3643Reference
FAQ: How to read a serial number table.Reference
Attachment overview
36" mid-mount mower deckReference
SnowblowerReference
BladeReference
36" Mower deck
Typemid-mount MurrayReference
Type2-blade with manual liftReference
Cutting width91 cmReference
Cut height3 to 7 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.
