MANUFACTURED BY: |  | HOMELITE-TEXTRON |
 | | PORT CHESTER, NEW YORK, USA |
SERIES OR ASSEMBLY NUMBER: | | UT10550, UT10611, UT10612, UT10684 |
SERIAL NUMBER PREFIX: | | |
YEAR INTRODUCED: | | 1988 |
YEAR DISCONTINUED: | | |
ENGINE DISPLACEMENT: | | 5.4 cu. in. (88 ccm) |
NUMBER OF CYLINDERS: | | Homelite Two-Cycle single cylinder loop scavenged engine |
CYLINDER BORE: | | 2.125 in. (54 mm) |
PISTON STROKE: | | 1.530 in. (38.8 mm) |
PISTON RING THICKNESS: | | 2 rings pn 12659A |
CYLINDER TYPE: | | Aluminum with Chrome plated bore |
INTAKE METHOD: | | Piston ported |
MANUFACTURER ADVERTISED H.P.: | | |
WEIGHT: | | 16 lbs. (7.3 kg) powerhead only |
OPERATOR CONFIGURATION: | | One Man operation |
HANDLEBAR SYSTEM: | | Anti-Vibration |
CHAIN BRAKE: | | Mechanical |
CLUTCH: | | Centrifugal |
DRIVE TYPE: | | Direct |
CONSTRUCTION: | | Plastic and die cast Magnesium |
MAGNETO TYPE: | | Electronic |
CARBURETOR: | | Walbro WJ-2 series |
MAJOR REPAIR KIT: | | K10-WJ |
MINOR REPAIR KIT: | | D10-WJ |
AIR FILTER SYSTEM: | | Nylon mesh cartridge |
STARTER TYPE: | | Homelite automatic rewind |
OIL PUMP: | | Automatic, worm gear driven |
MAXIMUM ENGINE RPM: | | 9,000 under load |
IDLE RPM: | | |
IGNITION TIMING: | | fixed |
BREAKER POINT SETTING: | | none |
FLYWHEEL/COIL AIR GAP: | | |
SPARK PLUG TYPE: | | Champion CJ6Y |
SPARK PLUG GAP: | | 0.025 in. (0.63 mm) |
CRANKSHAFT MAIN BEARINGS: | | Ball |
FUEL TANK CAPACITY: | | 31 oz. (917 ml) |
FUEL OIL RATIO: | | 32:1 with Homelite oil |
RECOMMENDED FUEL OCTANE: | | Regular |
MIX OIL SPECIFICATION: | | Homelite chain saw mix oil |
CHAIN PITCH: | | 3/8 in. |
CHAIN TYPE: | | 72D |
BAR MOUNT PATTERN: | | 14 link |
SHORTEST GUIDE BAR SUPPLIED: | | 20 in. (51 cm) |
LONGEST GUIDE BAR SUPPLIED: | | 43 in. (109 cm) |
COLOUR SCHEME: | | Homelite Red |
PAINT CODES: | | |
ILLUSTRATED PARTS LIST: | | |
SERVICE MANUAL: | | |