Stihl 021 Service & Repair Manual

Online version - not for reprint
3.3 Ignition System Type: Electronic magneto
ignition (breakerless)
with integral trigger unit
Air gap: 0.2 - 0.4 mm (0.008 - 0.016 in)
Spark plug (suppressed): Bosch WSR 6F,
NGK BPMR 7 A,
Champion RCJ 6Y or
Autolite 2984
Electrode gap: 0.5 mm (0.020 in)
3.4 Cutting Attachment Chain lubrication: Fully automatic speed-controlled
oil pump with rotary piston
Oil deivery rate: approx. 7.5 cm
3
/min (0.25 fl.oz/min)
at 10,000 rpm
Oil tank capacity: 0.20 l (0.4 US pt)
3.5 Special Accessories
3.5.1 For User STIHL repair kit 1123 900 5000
3/8" P, 8-tooth rim sprocket kit 1123 007 1001
.325", 7-tooth rim sprocket kit 1123 007 1003
.325", 8-tooth rim sprocket kit 1123 007 1002
1/4", 8-tooth spur sprocket 1123 640 2010
3/8" P, 7-tooth spur sprocket 1123 640 2000
.325", 7-tooth spur sprocket 1123 640 2015
.325", 8-tooth spur sprocket 1123 640 2020
Side chain tensioner kit 1123 007 1000
3.5.2 For Service Carburetor parts kit 1123 007 1061
4 021, 023, 025

Stihl 021 Specifications

General

Brand	Stihl
Model	021
Category	Chainsaw
Language	English