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Husqvarna 2100 Workshop Manual

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For Husqvarna Parts Call 606-678-9623 or 606-561-4983
Workshop
manual
chain saw model
2100
101 88 01-26
www.mymowerparts.com

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  Summary of Contents for Husqvarna 2100

  • Page 1 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Workshop manual chain saw model 2100 101 88 01-26 www.mymowerparts.com...
  • Page 2 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Contents Technical S pecification ServiceData SpecialTools Fuelsystem,Carburet&or Electric system Lubricating system,Oil pump Crankshaft Crankcase, Starter Clutch Centrifugal Safety Equipment www.mymowerparts.com...
  • Page 3 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 nloo Technical S pecification n Displacement 99 cm3 (6 cu in) Bore 56.0 mm (2.20”) Stroke 40.0 mm (1.57”) Ignition system Electronic. Make SEM type GA 1. Ignition advance 24° before t.d.c. at 133 r/s (8,000 r/rein)
  • Page 4 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 2100 Technical S pecification El Classification table Cylinder class Piston class PLEASE NOTE! As “A” denotes smallest cylinder diameter and “C” the largest, piston grades should be matched or one grade smaller. E g it is not permissible to use a grade B piston in a grade A cylinder.
  • Page 5 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 ServiceData !2 Crankcase Assy Vacuum: 0.04 MPa (0.4 kp/cm2, 5.7 psi) Max. leakage:0.01 MPa/1 min (0.1 kp/cm2, 1.4 psi, per rein) TooIs: 5025037-01 Vacuum gauge 5025081-01 Cover plate, exhaust port 5025047-01 Cover plate, inlet port Fig 2:1 Pressure:0.08 MPa (0.8 kp/cm2, 11.4 psi)
  • Page 6 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 ServiceData a Oil pump Pressure:0.3 MPa (3 kp/cm2, 42.7 psi) Pump capacity at 6,000 r/rein: Pos 1: approx 16-18 ml/min (0.98-1 .10 cu in/rein) Pos2: approx 22-24 ml/min (’ .34-1 .46 cu in;min)
  • Page 8 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 SpecialTools El 5025006-01 5025030-01 Assemblingpliers Fitting tool compl. for crankshaft plug protector) (spark 5025007-01 5025033-01 Assemblingpliers Piston stop grommet) (cable 5025018-01 NV 4 mm 5025019-01 NV 3 mm 5025057-01 NV 3/16” 5025036-01 Allen key...
  • Page 9 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 SpecialTools B 5025049-01 5025070-01 Assemblingpliers Piston mounting set, 5025070-01 compl. (centrifugal clutch) for elec- 5025081-01 Cover plate, exhaust port 5025051-01 Cable clip pliers 5025082-01 Fitting drift (sealingring) 5025052-01 Fitting sleevefor sealingring 5025083-01 Hook for oil filter...
  • Page 10 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 SpecialTools El 5025090-01 Jet-Pac spray gun compl. incl. retouch paint 5025091-01 Retouch paint, orange, 1/8 I 5025092-01 Pressurepack for Jet-Pac 5025101-01 Extractor (sealingring) 5025102-01 Clamping device 5025106-01 Glue, adhesive 5025107-01 Glue, epoxy 5025108-01...
  • Page 11 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 2100 Fuelsystem V Removal o f carlxwettor Remove carburetor cover, pre-filter, air filter, cylinder cover and fuel hose. Remove the throttle push rod from the plastic le- ver with a pair of flat hose pliers.
  • Page 12 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 nloo Fuelsystem Carburetorcheck Speed governor The purpose of the governor is to limit the engine A. Pumping section speed in order to protect vital parts Iike the crank- shaft and ignition system from excessivestresses. W e...
  • Page 13 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Fuelsystem Assembly A. Pumping section Locate the fuel screencarefully in its seating (see fig. 4:5). Locate the pump diaphragm next to the carburetor housingand then add gasketand cover. Tighten the screwsof the cover diagonally and evenly.
  • Page 14 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 2noo Fuelsystem When properly adjusted the lever of the needle Adjustment o f cartwrettor valve shall be on a level with the carburetor housingsurrounding it. Adjust if necessary(see A. Basic setting fig. 4:14).
  • Page 15 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Fuelsystem ~ The following problems may occur when warming the chain saw up: PROBLEM DAMAGE Engine fourstroking Speed governor faulty Bad idling Crack in the insulating piece Badly tightened carburetor screws Incorrectly assembledor leaking gaskets...
  • Page 16 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Fuelsystem Fig 4:20 Check by meansof e.g. revolution counter No. 5025036-01, that the high idle speed is approx. 10,500 r/rein. Should the high idle speedof the engine be below 10,000 r/rein, check the speed governor of the carburetor and replace it, if neces- sary.
  • Page 17 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Fuelsystem Trouble shooting guide Irregular idling speed Engine stops when accelerated (choke required) “Leaning out” No fuel supply Difficult adjustment Too “rich” supply No idling speed Extreme needle position High idle speed not reaching 10,500 r/rein www.mymowerparts.com...
  • Page 18 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 nloo Electric system ~ A. Ignition system, troubleshooting In all ignition testing the plug must be firmly earthed againstthe cylinder in order to prevent da- nageto the system. . Remove the spark plug.
  • Page 19 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Electric system ~ Fig 5:5 Fit holding bar No. 5025060-01 on the flywheel and puller No. 5025026-01 on the holding bar. Remove the flywheel. Changingthe starter pawls and springs Placethe flywheel on the working bench with the starter pawls downwards.
  • Page 20 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Lubricating system Removal o f oil pump Remove the following parts in order to get at the oil pump: Clutch cover, chain and bar, centrifugal clutch (NOTE! Left-hand threads), clutch drum. NOTE! The washer between the oil pump drive gear and the main...
  • Page 21 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Lubricating system Assembly Manualoil pump Assembly of the oil pump is made in reverseorder Figure 6:8 showsthe oil passage from the oil tank, to dismantling. through the manual oil pump to the guide bar.
  • Page 22 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Lubricating system Trouble shooting guide Removalof valve housing Loosen the socket head screwsthat retain the valve housingwith Allen key No. 5025019-01. — -l-4--u Adjustingscrewin position I I 6+ .,, Adjustingscrewworn 0’ Dirt in the suctionhoseand oil filter ‘>...
  • Page 23 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 2100 Cylinder,Piston ~ Removal Lift off the cylinder cover and remove the throttle push rod. Remove the plastic sleevefrom the car- buretor adjusting needles. Loosen the screwsre- taining the carburetor but leave the carburetor in its seating.
  • Page 24 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 2000 Cylinder,Piston Z7 Assembly Check that piston and cylinder have the same classification marking (seefig. 1 :1 and the classi- fication table). Fit the insulating piece and the sealingcollar on the cylinder. Check that the gasket is fitted correctly.
  • Page 25 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 nloo Crankcase,Crankshaft Removal o f crankcase The following components will have been removed already: chain and bar, centrifugal clutch, ignition system, carburetor, silencer, cylinder and piston. Fig 8:3 Separate the tank unit from the crankcase.
  • Page 26 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Crankcase,Crankshaft Assembling thecrankcase Fig 8.6 Separate the crankcasehalvesby careful useof a plastic hammer. Remove the sealingring on the magneto side. Remove the ball bearingsfrom the crankshaft with a special ball bearing puller. Crankshaft c heck...
  • Page 27 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Crankcase,Crankshaft ~ Fig8:12 Pull the crankcasehalvestogether with fitting Fig 8:10 tool No. 5025030-01. Placethe drive side in the clamping device No. 5025102-01. Warm up the bearing seat to abt Tighten all screws, beginning nearest the crank- 130°C.
  • Page 28 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Crankcase,Crankshaft ~ Assembly of crankcase — tankunit Fit the rear part of the tank unit first, so that the fuel hose may be pulled through the hole in the crankcase. Fig 8:14 Fit a new main bearing seal in the magneto side of the crankcase.Use fitting drift No.
  • Page 29 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Starter Removal Assembly Remove the screwsthat retain the starter. Set the Put the return spring, a new one if necessary,into the starter housing. Lubricate the centre tap with return spring to zero by pulling out the starting a few drops of ordinary engine oil.
  • Page 30 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 2100 Centrifugal C lutch Removal Fit the piston stop No. 5025033-01 into the spark Use the drift to pressa new bearing into the clutch plug hole. Remove the clutch centre with tool No.
  • Page 31 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Centrifugal C lutch Lubrication Changing thewormgear Lubricate the worm gear of the oil pump drive The worm gear of the oil pump drive is easily with Molykote before fitting the clutch drum. The removed from the clutch drum.
  • Page 32 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 2100 SafetyEquipment on A. Chainbrake Removal Proceedas follows: Remove the clutch cover and clean brake mecha- nism and brake band. Fix the clutch cover in the clamping device No. 5025102-01 with two spareguide bar studsand nuts.
  • Page 33 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 2noo SafetyEquipment Ofl The catch may be removed after pushingout the Releaseand lock the brake repeatedly to check roll pin functioning as a bearing. Use a drift @4 mm. that the mechanismworks smoothly.
  • Page 34 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 SafetyEquipment 00 Fig 11:9 The safety catch is removed by pushingout the roll pin with a drift 03 mm. The spring is attached to the safety catch. It may be changedafter pushingout the roll pin with a drift @ 1.5 mm.