MANUFACTURED BY: |  | HOMELITE-TEXTRON |
 | | PORT CHESTER, NEW YORK, USA |
SERIES OR ASSEMBLY NUMBER: | | UT10486-B, UT10587-B |
SERIAL NUMBER PREFIX: | | |
YEAR INTRODUCED: | | 1986 |
YEAR DISCONTINUED: | | |
ENGINE DISPLACEMENT: | | 4.10 cu. in. (68 ccm) |
NUMBER OF CYLINDERS: | | Homelite Two-Cycle single cylinder loop scavenged engine |
CYLINDER BORE: | | 1.937 in. (49 mm) |
PISTON STROKE: | | 1.375 in. (35 mm) |
PISTON RING THICKNESS: | | 2 rings, pn 93216 |
CYLINDER TYPE: | | Aluminum with Chrome plated bore |
INTAKE METHOD: | | Reed valves |
MANUFACTURER ADVERTISED H.P.: | | 4.15 SAE @ 9,500 RPM |
WEIGHT: | | 16 lbs. 9 oz., powerhead only |
OPERATOR CONFIGURATION: | | One Man operation |
HANDLEBAR SYSTEM: | | Anti-vibration |
CHAIN BRAKE: | | Optional, manual |
CLUTCH: | | Centrifugal, 3 metal shoes |
DRIVE TYPE: | | Direct |
CONSTRUCTION: | | Die cast Magnesium |
MAGNETO TYPE: | | Electronic, two piece |
CARBURETOR: | | Walbro WS-16 series, |
MAJOR REPAIR KIT: | | K10-WS |
MINOR REPAIR KIT: | | D10-WS |
AIR FILTER SYSTEM: | | Nylon mesh cartridge |
STARTER TYPE: | | Homelite automatic rewind, replacement
cord is 45 in. of #5 |
OIL PUMP: | | Automatic with manual override |
MAXIMUM ENGINE RPM: | | 11,000 to 12,000 no load with bar and chain installed |
IDLE RPM: | | |
IGNITION TIMING: | | fixed |
BREAKER POINT SETTING: | | none |
FLYWHEEL/COIL AIR GAP: | | 0.015 in. (0.38 mm) |
SPARK PLUG TYPE: | | Champion DJ7Y |
SPARK PLUG GAP: | | 0.025 in. (0.63 mm) |
CRANKSHAFT MAIN BEARINGS: | | Ball |
FUEL TANK CAPACITY: | | 24 oz. (709 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. 0.050 gauge |
CHAIN TYPE: | | Carlton Chisel A1LM |
BAR MOUNT PATTERN: | | 14 link |
SHORTEST GUIDE BAR SUPPLIED: | | 16 in. (40 cm) |
LONGEST GUIDE BAR SUPPLIED: | | 31 in. (78 cm) |
COLOUR SCHEME: | | Homelite Red enamel |
PAINT CODES: | | |
ILLUSTRATED PARTS LIST: | | |
SERVICE MANUAL: | | |