Home | Chain Saws | Chain Saw Chain | Bar Mount Patterns | Carburetors | Manufacturers | Trademarks | Collectors | Bulletins | Events | Stolen Saws | Chain Saw Age Reprints | Newsletter | Marketplace | Parts Sources | Cartoons | Links | Your Host



Model: 420

MANUFACTURED BY:
JONSEREDS FABRIKERS AB
PARTILLE, SWEDEN
SERIES OR ASSEMBLY NUMBER:
YEAR INTRODUCED:
1981
YEAR DISCONTINUED:
1985
ENGINE DISPLACEMENT:
35cc (2.1 cu. in.)
NUMBER OF CYLINDERS:
1
CYLINDER BORE:
40mm
PISTON STROKE:
28mm
PISTON RING THICKNESS:
CYLINDER TYPE:
Aluminum with chrome plated bore
INTAKE METHOD:
Piston ported
MANUFACTURER ADVERTISED H.P.:
1.8k@ @ 10,500 rpm
WEIGHT:
5.3kg with 27cm bar & chain
11.6 lbs. with 11 in. bar & chain
OPERATOR CONFIGURATION:
One Man operation
HANDLEBAR SYSTEM:
CHAIN BRAKE:
CLUTCH:
Centrifugal
DRIVE TYPE:
Direct
CONSTRUCTION:
Die cast magnesium
MAGNETO TYPE:
Electronic
CARBURETOR:
Tillotson HK series
Walbro HDA-6-1
MAJOR REPAIR KIT:
K22-HDA for Walbro
MINOR REPAIR KIT:
D22-HDA for Walbro
AIR FILTER SYSTEM:
Nylon mesh cartridge
STARTER TYPE:
Jonsereds automatic rewind
OIL PUMP:
Automatic
MAXIMUM ENGINE RPM:
14,000
IDLE RPM:
IGNITION TIMING:
fixed
BREAKER POINT SETTING:
none
FLYWHEEL/COIL AIR GAP:
SPARK PLUG TYPE:
Bosch WS7F
SPARK PLUG GAP:
0.5mm (0.020 in.)
CRANKSHAFT MAIN BEARINGS:
Ball
FUEL TANK CAPACITY:
600ml
FUEL OIL RATIO:
40:1
RECOMMENDED FUEL OCTANE:
Regular
MIX OIL SPECIFICATION:
Two-cycle chain saw mix oil
CHAIN PITCH:
.325 in.
CHAIN TYPE:
Chisel
BAR MOUNT PATTERN:
01 link
SHORTEST GUIDE BAR SUPPLIED:
27cm (11 in.)
LONGEST GUIDE BAR SUPPLIED:
40cm (16 in.)
COLOUR SCHEME:
Red and Black enamel
PAINT CODES:
ILLUSTRATED PARTS LIST:
SERVICE MANUAL:

COMMENTS:



 

Reproduction of this World Wide Web Site in whole or in part is prohibited without permission.
Copyright © 2000-2021 MIKE ACRES - All rights are reserved.