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44 - English

Troubleshooting

21 Troubleshooting

21.1 General troubleshooting

The different faults which may occur on the chainsaw
are divided into four groups. Within each group
possible operating faults are listed to the left while the
probable fault alternatives are listed to the right. The
most likely fault is listed first, etcetera.

Starting

Difficult to start

Air filter blocked

Choke does not work

Worn choke axle

Worn choke valve

Blocked fuel filter

Blocked fuel line

Piston ring is stuck

Blocked impulse channel

The carburettor
leaks fuel

Loose or faulty fuel hose

Hole in diaphragm

Worn needle/needle tip

Control system sticking

Control system set too high

Leaking control system

(air or fuel)

The cover on the carburettor

pump side is loose

Floods when the
engine is not run-
ning

Worn needle/needle tip

Control system set too high

Control system sticking

Idling (low speed)

Does not idle

Leaking inlet hose (rubber)

Loose carburettor mounting

Loose or faulty fuel hose

Blocked fuel filter

Blocked fuel line

Tank ventilator blocked

The throttle valve shaft is inert

Throttle stay is binding

Defective throttle return spring

Bent valve axle stop

Faulty diffuser jet

Too rich idling

Worn needle/needle tip

Worn lever arm in the control

system

Leaking diaphragm/cover plate

Worn needle/needle tip

Leaking diaphragm/cover plate

Worn lever arm in the control

system

Faulty diffuser jet

Uneven idling

Blocked fuel filter

Blocked fuel line

Leaking inlet hose (rubber)

Loose carburettor mounting

Worn throttle valve axle

Loose throttle valve screw

Worn throttle valve

Leaking control system

(air or fuel)

The control system’s centre

knob is worn

Hole in diaphragm

Leaking diaphragm/

cover plate

Leaking crankcase

L screw requires
constant adjustment

Blocked fuel line

Leaking control system

(air or fuel)

Leaking diaphragm/cover plate

Faulty diffuser jet

Leaking crankcase

Too much fuel at

idle speed

Worn needle/needle tip

Leaking diaphragm/

cover plate

High speed

Will not run at full
throttle

Blocked air filter

Tank venting clogged

Blocked fuel filter

Blocked fuel line

Loose or faulty fuel hose

Impulse channel leaking

Blocked impulse channel

The cover on the carburettor

pump side is loose

Faulty pump diaphragm

Leaking inlet hose (rubber)

Loose carburettor mounting

Control system set too low

Damaged control system

Control system incorrectly as-

sembled

Leaking diaphragm/cover plate

Control system sticking

Blocked muffler

Содержание H130 Mark II

Страница 1: ...English 1 Workshop manual H130 H135 Mark II English ...

Страница 2: ...2 6 Chain catcher 15 7 Muffler 16 8 Start stop switch 17 9 Throttle trigger lockout throttle trigger and spring 19 10 Starter 21 11 Ignition system 23 12 Flywheel 24 13 Centrifugal clutch 26 14 Lubrication system 27 15 Carburettor 28 16 Tank unit 35 17 Anti vibration system 37 18 Piston and cylinder 38 19 Bar bolt 42 20 Test the ignition 43 21 Troubleshooting 44 ...

Страница 3: ...chainsaw in question 1 5 Layout This Workshop Manual can be used in two different ways For the repair of a particular system on the chainsaw Dismantling and Assembly of the entire chainsaw Repair of a particular system When a particular system on the chainsaw is to be repaired proceed as follows 1 Look up the page for the system in question 2 Carry out the sections Dismantling Cleaning and inspect...

Страница 4: ...After test running do not touch the muffler until it has cooled Risk of burn injuries Insufficient lubrication of the chain can result in the chain breaking which can cause serious or even life threatening injury Ensure that the spring in the starter does not fly out and cause personal injury If the spring tension is activated on the starter pulley when it is to be taken up the spring can fly out ...

Страница 5: ...ainsaw casing 1 4 Symbols in this Workshop Manual This symbol indicates a risk of personal injury if instructions are not followed Choke Fuel pump Fuel filler Stop switch Saw chain oil filler Chain brake Use protective gloves Use protective goggles Introduction and safety regulations ...

Страница 6: ...ain speed Chain pitch Drive link cm inch at maximum power m s mm inch mm inch 130 35 5 40 6 14 16 22 3 m s at 9000 rpm 9 5 0 375 1 3 0 05 135 35 5 40 6 14 16 22 3 m s at 9000 rpm 9 5 0 375 1 3 0 05 Spark plug gap Ignition system Air gap Carburettor type mm inch mm inch 130 0 5 0 02 Digital MBU 84 0 3 0 01 Walbro WTA 36 135 0 5 0 02 Digital MBU 84 0 3 0 01 Walbro WTA 36 2 Technical data Technical d...

Страница 7: ...uel tank volume Oil pump capacity Oil tank volume Automatic oil pump Litres US pint cm3 min Litres US pint 130 0 35 0 74 9 cm3 min at 9000 rpm 0 26 0 55 YES 135 0 35 0 74 9 cm3 min at 9000 rpm 0 26 0 55 YES Weight without Weight with bar and chain bar and chain kg lbs kg lbs 130 4 7 10 3 5 3 11 6 135 4 7 10 3 5 3 11 6 rpm OIL Technical data ...

Страница 8: ...8 English 11 9 3 12 13 14 10 1 2a 4 5 6 7 8 3 Service tools Service tools 2b 2c 2d 8 9 0 7 6 8 9 0 7 6 8 9 0 7 6 ...

Страница 9: ...er 503 84 40 02 9 Feeler gauges ignition gap Air gap tool 502 51 34 02 10 Tachometer Checking engine rpm 502 71 14 01 11 Adjustment screwdriver Adjustment of the carburettor 501 60 02 03 12 Assembly pliers Assembly of spark plug cap 502 50 06 01 13 Hook for fuel filter Removing fuel filter 502 50 83 01 14 Assembly fixture Dismantling assembling of the chainsaw 502 51 02 01 15 T handle Torx T10 Dis...

Страница 10: ...ubricate with chain oil Lubricate with grease 4 Service data Service data T30 7 0 9 0 Nm 1st torque T30 11 0 13 0 Nm 2nd torque 19 mm 12 0 14 0 Nm 12 0 14 0 Nm 2 5 3 0 Nm T25 2 2 3 4 Nm 1 0 1 5 Nm T27 2 5 3 5 Nm T27 2 5 3 5 Nm T25 5 0 6 0 Nm 4 mm 2 0 2 7 Nm 2 8 4 0 Nm 5 mm 8 mm T25 5 6 6 8 Nm 3 0 4 0 Nm 2 5 3 0 Nm 4 mm 6 0 8 0 Nm ...

Страница 11: ... 6 0 8 0 Nm T27 2 2 3 4 Nm 2 8 4 0 Nm T27 2 8 4 0 Nm T25 2 5 3 5 Nm 13 mm 21 7 24 4 Nm 13 mm 11 27 Nm 2 5 3 5 Nm T20 0 9 1 4 Nm T27 2 5 3 5 Nm 1 9 3 0 Nm T20 3 4 4 5 Nm 4 mm 2 8 4 0 Nm 4 mm T27 2 2 3 4 Nm 1 9 3 0 Nm 4 mm 13 5 20 3 Nm T25 2 5 3 5 Nm ...

Страница 12: ...e Figure 1 3 Carefully tighten the clutch housing in a vice Re lease the brake by using the kickback guard as a tool See Figure 2 4 Loosen the screws and carefully remove the cover over the brake spring Make sure the spring does not fly out See Figure 3 5 Hold one hand over the brake spring press a nar row screwdriver in between the rear section of the spring and the clutch cover Carefully pry upw...

Страница 13: ...g with grease See Figure 6 Secure the circlip A See Figure 6 2 Grip the clutch cover in a vice Compress the spring with a wide screwdriver and press it down with your thumb See Figure 7 WARNING Make sure the spring does not fly out and cause injury Wear eye protection 3 Fit the cover over the chain brake spring and tighten the screws See Figure 3 4 Tension the brake spring by using the kickback gu...

Страница 14: ...ows 1 Hold the chainsaw over a stable surface as shown in Figure 9 The distance between the bar and surface is given in the table below Bar length L Height H 15 28 inch 30 40 cm 2 Let go of the front handle and let the chainsaw pivot round on the rear handle 3 When the bar hits the surface the chain brake should cut in Fig 9 H L ...

Страница 15: ...e clutch cover 2 Dismantle the bar and chain 6 2 Cleaning and inspection Inspect the chain catcher and replace it if it is damaged See figure 1 6 3 Assembly 1 Fit the bar and chain 2 Adjust the tension of the chain 3 Fit the clutch cover Tighten the nuts to the correct torque See Service data ...

Страница 16: ...omponents and check the following 1 That the spark arrester is intact 2 That the muffler and muffler mounting are not cracked or in any way defect 3 That the gasket is undamaged CAUTION Replace the gasket if it is damaged The gasket has to be fitted correctly against the muffler 7 3 Assembly 1 Clean the contact surfaces to the gasket cooling plate and cylinder 2 If the chainsaw is fitted with a sp...

Страница 17: ...n Carefully clean and check all components See Figure 3 Parts must be replaced if cracked or if they show signs of other defects Always use original spare parts 8 3 Assembly 1 If the start stop switch has been replaced fit the new start stop switch to the air filter holder See Figure 3 2 Fit the cable E See call out in Figure 2 3 Carefully attach the air filter holder B to the carburettor Make sur...

Страница 18: ...ting a multimeter to the blue cable and the cylinder earth See Figure 4 NOTE The switch must be in the on position to give the correct reading The resistance must not be higher than 0 5 Ω when the switch is in the on position The stop switch is in the ON position when the button is held down and in the OFF position the button is neutral Fig 4 ...

Страница 19: ... 3 Remove the antivibration element B See Figure 1 4 Remove the chain catcher C See Figure 1 5 Remove the antivibration element D See Figure 1 6 Remove the screw E holding the antivibration ele ment F See Figure 2 7 Remove the throttle wire G See Figure 3 8 Remove the fuel hose H and the suction hose I from the carburettor See Figure 3 Throttle trigger lockout throttle trigger and spring Fig 2 Fig...

Страница 20: ...ts Check that the spring is intact and retains all its ten sion 9 3 Replace a defect throttle cable 1 Attach the wire to the throttle trigger Pull the wire through the handle See Figure 6 9 4 Assembly 1 Insert the throttle control O into the handle See Figure 6 2 Insert the throttle trigger into the handle Attach the throttle trigger to the handle by knocking the pin L into the handle 3 Put togeth...

Страница 21: ...rter cord The dogs on the starter pulley That the pawls on the flywheel are intact and that the spring is back towards the centre and moves freely The easy starter spring only 135 3 Grease the spring in the starter pulley 10 3 Assembly WARNING If the spring is tensioned on the starter pulley it can fly up and cause personal injury 1 If a new spring is to fitted make sure that the spring is placed ...

Страница 22: ...rrectly tensioned See Figure 5 2 Pull out the cord completely 3 In this position it should be possible to turn the pul ley by hand an additional 1 2 3 4 turn 4 Fit the starter on the crankcase Check that the starter pulley is fitted correctly against the crank case by lightly pull the starter cord Tighten the screws See Figure 1 Fig 5 ...

Страница 23: ...ace the damaged parts with new ones Always use original parts 11 4 Assembly 1 Attach the ignition module to the cylinder without tightening the screws See Figure 1 2 Turn the flywheel so that the magnets are in line with the ignition module Fit the the plastic feeler gauge 502 51 34 02 Set a distance of 0 3 0 1 mm between the ignition module and magnet The measurement applies to the two lowest lug...

Страница 24: ... piston stop 575 29 36 01 in spark plug hole See figure 1 4 Loosen the screws holding the ignition module but do not remove them 5 Remove the flywheel nut 6 Remove the screws A pawls B springs C and washers D See Figure 2 7 A special tool 502 51 49 02 from Husqvarna is required to dismantle and assemble the flywheel Center the tool on the crankshaft Select the appropriate screw supplied with the t...

Страница 25: ...f damage 12 3 Assembly 1 Fit the washers D springs C pawls B and screws A See Figure 5 2 Clean crankshaft to remove grease or oil 3 Fit the flywheel onto the crankshaft pin Turn the flywheel until the key fits into the key slot on the shaft See figure 6 4 Tighten the nut for the flywheel 5 Remove the piston stop See figure 1 6 Turn the flywheel so that the magnets are in line with the ignition mod...

Страница 26: ...o wear on the chain drive sprocket That the needle bearing is in good condition and that there is no damage on the journal surface on the crankshaft That the friction surface on the clutch drum is intact and that the bearing surface is undamaged That the thickness on the clutch shoes is no less than 1 mm at the most worn point See Figure 3 If the thickness is less change the entire clutch 13 3 Ass...

Страница 27: ...embly 1 Thread new worm spring into tool Make sure that it is fully seated in tool thread See Figure 3 2 Place the tool with the spring assembly onto crank shaft 3 Lightly tap end of tool until spring is aligned into the retention groove on crankshaft The tool makes sure the spring is installed at the correct depth 4 Unthread tool off of installed spring Use a scrench hex driver if required to rem...

Страница 28: ...ed and power output See Figure 1 The mixing venturi B houses the choke throttle valve and diffuser jets Here air is mixed with the fuel to give a fuel air mixture that can be ignited by the ignition spark See Figure 2 In the pump unit C fuel is pumped from the fuel tank to the metering unit One side of the pump diaphragm is connected to the crankcase and pulses in time with the pressure changes in...

Страница 29: ...gure 5 the throttle valve I and J is closed and the choke valve H is open Air is sucked in through an aperture in the throttle valve and a small amount of fuel is supplied through the dif fuser jet D see Figure 5 In the part throttle mode see Figure 6 the throttle valve I is partially open and the choke valve H is open Fuel is supplied through the diffuser jets D and E The throt tle valve J starts...

Страница 30: ... filter holder B See Figure 9 7 Detach the cable E See Figure 9 8 Remove the throttle wire F See Figure 10 9 Remove the fuel hose G and suction hose H from carburettor See Figure 10 NOTE Do not use any sharp tools to loosen the hoses 10 Pull out the air valve I from the inlet pipe J See Figure 10 11 Pull out the carburettor and the air valve I from the flange L See Figure 11 12 Remove the air valv...

Страница 31: ...ody Air can penetrate into the blood circulation which means mortal danger Use compressed air to dry the petrol on the components Direct the air through all channels in the carburettor housing and ensure that they are not blocked Check the following That the gasket pump and control diaphragms are undamaged as well as the gasket between the carburettor body and the autotuner That there is no play o...

Страница 32: ...ing the carburettor Pressure testing should be carried out with the carbu rettor fully assembled The test must always be done after the carburettor has been repaired but can also be carried out when troubleshooting before the carburettor is taken apart Test 1 See Figure 14 and carry out the following check 1 Connect pressure tester to the carburettor fuel inlet 2 Lower the carburettor into a beake...

Страница 33: ...ch the air valve I to the inlet pipe J See Figure 11 4 Fit the carburettor on the flange L Figure 11 5 Attach the throttle wire F to the carburettor as outlined in Figure 10 6 Attach the fuel hose G to the carburettor as out lined in Figure 10 7 Attach the suction hose H to the carburettor as outlined in Figure 10 8 Attach the ignition cable E to the start stop switch and fit the air filter holder...

Страница 34: ...cal conditions e g climate altitude fuel and type of 2 stroke oil The carburettor is equipped with three adjustment op tions L Low speed jet H High speed jet T Idling adjustment The L and H jets adjust the fuel flow to match the air flow that the throttle valve opening allows Turning them clockwise makes the fuel air mixture weaker less fuel and turning them counter clockwise makes the fuel air mi...

Страница 35: ...r 8 1 Step 1 to 7 to dismantle the air filter air filter holder and start stop switch See Figure 1 3 Remove the fuel cap Use a pair of pliers with smooth jaws and pull out the fuel hose B and the fuel filter C See Figure 2 CAUTION Take care not to damage the fuel hose return hose tank vent hose or throttle cable 16 2 Replacing the fuel hose and fuel filter When replacing the fuel filter use the sp...

Страница 36: ...nd return hose A from the primer bulb E See Figure 1 16 4 Cleaning and inspection Clean all parts and check that the fuel hose is intact 16 5 Assembly 1 Make sure the fuel filter is attached to the fuel hose 2 Follow the instructions in chapter 8 1 Step 1 to 9 in the reverse order ...

Страница 37: ...emove the screw A holding the antivibration ele ment B See Figure 1 3 Remove the antivibration element B See Figure 1 4 Remove the chain catcher C See Figure 1 5 Remove the antivibration element D See Figure 1 6 Remove the screw E holding the antivibration ele ment F and See Figure 2 7 Remove the anti vibration element See Figure 2 17 2 Cleaning and inspection Clean and inspect all parts 17 3 Asse...

Страница 38: ...vibration element Oil system 2 Detach the fuel hose and return hose 3 Detach the throttle wire 4 Remove the tank unit and front handle 5 Remove the carburettor and the manifold 6 Remove the five screws holding the crankcase to the cylinder See Figure 1 7 Remove the cylinder See Figure 2 CAUTION Exercise care so that dirt and foreign particles do not get into the crankcase 18 Piston and cylinder Fi...

Страница 39: ...The decompression valve 5 Base of the cylinder and or crankcase Check the following 1 That the cylinder s surface coating is not worn Es pecially in the upper end of the cylinder 2 That the cylinder is free of score marks See figure 4 3 That the piston is free of score marks Minor scratches can be polished off with fine emery paper 4 That the piston ring is not burnt into its groove 5 Measure the ...

Страница 40: ...ew brearing on the shaft and push into position using the tool 502 50 30 18 See figure 8b CAUTION If the bearings are mounted in the crankcase exercise care to avoid dirt and foreign particles getting in Clean all components and scrape of the remains of gasket material from the mating surfaces of the crankcase halves 1 Check that the big end bearing does not have any radial play Axial play is acce...

Страница 41: ...r filter and air filter holder Spark plug Cylinder cover 18 5 Leakage testing 1 Remove the cylinder cover 2 Remove the air filter the air filter holder and the carburettor See chapter 15 4 Dismantling the carburettor 3 Attach the pressure testing covers A B and spacing sleeves D Tighten the pressure testing cover B with the nuts See Figure 10 4 Loosen the screws on the muffler and press the rubber...

Страница 42: ...Secure steel wire to the outer part of the new bar bolt thread the steel wire through the oil tank and out through the bolt hole See Figure 3 2 Pull the steel wire so the bolt comes out of its hole See Figure 3 3 Check that the bolt s square head fits in the washer which is positioned inside the oil tank 4 Pull out the bar bolt using its nut Place two spacer between the nut and chain guard plate S...

Страница 43: ...st the knob to 6 mm gap between the two electrodes read 6 marks on the corresponding scale 4 Pull firmly in the starter handle 5 A clear blue spark will be visible between the elec trodes if the ignition works properly The ignition system must be capable of producing a strong spark or the engine will have performance prob lems particularly under load 20 Test the ignition Fig 1 ...

Страница 44: ...tle return spring Bent valve axle stop Faulty diffuser jet Too rich idling Worn needle needle tip Worn lever arm in the control system Leaking diaphragm cover plate Worn needle needle tip Leaking diaphragm cover plate Worn lever arm in the control system Faulty diffuser jet Uneven idling Blocked fuel filter Blocked fuel line Leaking inlet hose rubber Loose carburettor mounting Worn throttle valve ...

Страница 45: ...ubber Loose carburettor mounting Control system set too low Leaking control system air or fuel Control system incorrectly as sembled Loose diaphragm Hole in diaphragm Leaking diaphragm cover plate Acceleration and retardation Does not accelerate Blocked air filter Tank venting clogged Blocked fuel filter Blocked fuel line Loose or faulty fuel hose Blocked impulse channel The cover on the carburett...

Страница 46: ...46 English 2019 02 27 115 98 13 26 ...

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