Husqvarna 356BFX Series Workshop Manual Download Page 20 | Manualshive

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Husqvarna 356BFX Series Workshop Manual Download Page 20

20

7 Repairs

7.3 Air filter and carburettor

7.3.1 Dismantling the air filter

1.

Loosen the four snap fasteners of the outer cover
with a chisel.

2.

Loosen the two snap fasteners of the air filter lid
with a chisel.

7.3.2 Assembling the air filter

1.

Fasten the two snap fasteners of the air filter.

7.3.3 Dismantling the carburettor

1.

To loosen the choke lever from its holder pull the
lever straight out. Place a chisel between the lever
and the holder. Press down on the chisel and twist
the lever counterclockwise at the same time.

2.

Dismantle the choke lever.

8015-005

8015-033

IMPORTANT INFORMATION!

The choke lever can be difficult to get out of its
holder. Read the instructions carefully.

8015-006

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Summary of Contents for 356BFX Series

Page 1: ...Workshop manual 356BTx 356BFx English ...

Page 2: ......

Page 3: ... 3 2 Assembling the air filter ___________________________________20 7 3 3 Dismantling the carburettor ________________________________20 7 3 4 Assembling the carburettor ________________________________21 7 3 5 Basic carburettor settings _________________________________22 7 4 Exhaust system ______________________________________________23 7 4 1 Dismantling the exhaust system ____________________...

Page 4: ...4 ...

Page 5: ...ing the exhaust system 23 F Fan spiral Assembling the motor package and fan spiral 28 Dismantling the motor package and fan spiral 26 H Handle Assembling the handle 35 Dismantling the handle 35 I Ignition module Assembling the ignition module 25 Dismantling the ignition module 24 M Maintenance Air filter 37 Fuel handling 37 P Preparations 17 S Safety precautions Special instructions 8 Starter asse...

Page 6: ...6 ...

Page 7: ...devices in accordance with local regulations In this workshop manual the boxes shown below are found at appropriate places The machine is type approved with regards to safety in accordance with the current legal requirements with the equipment specified in the instructions Assembly with other equipment accessories or replacement parts not approved by Husqvarna can result in the safety requirements...

Page 8: ...soline fire with water Do not grab hold of hot parts such as the exhaust system Do not use damaged screws or nuts Husqvarna recommends using the special tools indicated in the workshop manual to avoid personal injury or material damage 2 3 Symbols Inspection and maintenance should be performed with the motor turned off and the switch in the STOP position Protective eyewear or a visor must be used ...

Page 9: ...uster 6 Throttle 356 BT 7 Control handle Manoeuvering handle 8 Manoeuvering pipe 9 Linking pipe 10 Blower pipe 11 Starter handle 12 Muffler 13 Spark plug 14 Fuel pump 15 Choke control 16 Fuel tank 17 Carburettor adjustment screws 18 Air filter 19 Combination wrench 20 Handlebars Accessory 21 Flat nozzle Accessory 22 Drain hose certain models only 8015 035 ...

Page 10: ...10 ...

Page 11: ...e cylinder This results in lower emissions and lower fuel consumption The drain hose prevents the condensate from ending up at the bottom of the resonance tube thus reducing engine output 4 2 Air to the air filter The air filter takes air from the fan spiral Just in front of the outflow nozzle by the fan spiral s inner radius there is an air intake that conducts the incoming air to the filter The ...

Page 12: ...12 ...

Page 13: ...of the carburettor setting Adjust the carburettor according to Basic carburettor settings on page 22 Motor turns unevenly Obstructed spark arrest screen Clean the spark arrest screen according to Dismantling the exhaust system on page 23 Adjustment of the carburettor setting Adjust the carburettor according to Basic carburettor settings on page 22 Obstructed air filter Clean the air filter accordi...

Page 14: ...14 ...

Page 15: ...on 6 Special tools and lubrication 6 1 Special tools Basic carburettor settings Ignition module Fan spiral Cylinder and crankshaft 531 00 48 63 544 01 68 01 502 51 49 02 502 51 61 01 502 71 14 01 502 50 30 16 502 50 70 01 502 54 15 01 ...

Page 16: ...16 6 2 Lubrication Starter assembly Air filter 502 51 27 01 531 00 60 76 ...

Page 17: ... Preparations Remove the air pipe s two screws and the two wear rings 7 2 Starter assembly 7 2 1 Dismantling the starter assembly 1 Take off the lower part of the carrier harness to get at the starter assembly 8015 001 8015 002 ...

Page 18: ... to make dismantling easier 3 Lay the cord in the groove 4 Wind up the starter cord and stop the cord wheel with your thumb 5 See if the spring has let go Loosen the centre screw 6 Remove the spring with a pair of pliers 8015 032 WARNING Exercise warning to avoid personal injury 8015 003 8015 031 ...

Page 19: ...e tightened afterward 3 Grease the wheel axle Use universal grease article number 502 51 27 01 4 Assemble the cord wheel and screw it firmly onto the axle 5 Tighten the spring by winding three turns of the cord onto the cord wheel s groove Check to see that the knot attached to the cord wheel can pass through the cord opening by half a turn If the knot cannot pass the opening the spring could touc...

Page 20: ...Fasten the two snap fasteners of the air filter 7 3 3 Dismantling the carburettor 1 To loosen the choke lever from its holder pull the lever straight out Place a chisel between the lever and the holder Press down on the chisel and twist the lever counterclockwise at the same time 2 Dismantle the choke lever 8015 005 8015 033 IMPORTANT INFORMATION The choke lever can be difficult to get out of its ...

Page 21: ...ower hose clip on the intake pipe 9 Dismantle the impulse hose that sits between the cylinder and the holder in the carburettor 10 Remove the carburettor by pulling it straight out 7 3 4 Assembling the carburettor 1 Put the carburettor back in its place 2 Put the impulse hose back 3 Pull the lower hose clip back from the carburettor to the intake pipe 4 Put the fuel line and the purge hose back us...

Page 22: ...ockwise about one turn After that adjust the idle on the T screw to about 2300 rpm Use special tool 531 00 48 63 and special tool 502 71 14 01 2 H High revolution nozzle Give it full throttle and adjust the H needle until the number of revolutions is between 5900 6100 rpm Turn the H needle clockwise until the number of revolutions drops then turn the H needle counterclockwise about one turn Use sp...

Page 23: ...te 7 4 2 Assembling the exhaust system 1 Clean the spark arrester screen with a wire brush as needed Replace the spark arrester screen as needed 2 Replace the cooling plate and the gasket 3 Fasten the four screws of the exhaust system WARNING After a test run do not touch the muffler until it cools Risk of burn injury Use protective gloves 8015 010 8015 014 ...

Page 24: ...ng the ignition module 1 Loosen the screw that holds the resonance pipe and turn it away 2 Dismount the short circuit cables 3 Dismantle the sparkplug cap and its cable 4 Remove the two screws that hold the ignition module 8015 039 8015 015 8015 011 ...

Page 25: ... the hub should be 0 2 mm Place airgap tool 544 01 68 01 between the hub and the ignition module Note Make sure the contact plate remains on the right hand screw that holds the ignition module 3 Fasten the two screws 4 Mount the short circuit cables 5 Push down the sparkplug cap and seat the ignition cable in the clip 8015 012 8015 013 544 01 68 01 8015 011 IMPORTANT Make sure the ignition cable s...

Page 26: ...tor on page 20 4 Dismantle the throttle cable and take out the fuel hose and purge hose See Air filter and carburettor on page 20 5 Dismantle the short circuit cables on the ignition module 6 Dismantle the spark plug 7 Dismantle the four screws of the vibration damping system 8 Twist the fan spiral out of the chassis 9 Dismantle the five screws that hold the fan spiral together Split the fan spira...

Page 27: ... fan wheel and remove the screws 13 Dismantle the two starter hooks Lift out the starter hooks with the accompanying spring and screw 14 Loosen the centre nut Use pulling tool 502 51 49 02 to take out the hub 15 Dismantle the five screws that hold the motor package in the fan spiral 8015 018 8015 019 502 51 49 02 8015 020 ...

Page 28: ...ue 3 Mount the two screws of the starter hooks 4 Mount the fan wheel in its groove Note Use a bit since the key handle is shallow 5 Mount the four screws Tighten with 3 4 Nm of torque 6 Mount the five screws of the front fan spiral Tighten with 2 4 Nm of torque 7 Put the fan package into the chassis 8 Put the throttle cable in the carburettor housing 9 Put in and seat the fuel hose and purge hose ...

Page 29: ...ur screws of the vibration damping system Tighten with 3 4 Nm of torque 11 Mount the choke lever according to Assembling the air filter on page 20 12 Mount the short circuit cable on the ignition module 8015 016 8015 009 8015 015 ...

Page 30: ...ccording to Assembling the starter assembly on page 19 14 Push the harness into its clip 15 Mount the air filter cover and the outer cover 16 Mount the two wear rings and screw the blower pipe firmly with the two screws 8015 032 8015 002 8015 001 ...

Page 31: ...ding to Dismantling the motor package and fan spiral on page 26 2 Dismantle the four screws of the cylinder Check that the 2 guide pins remain in the material 3 Take out the package and the circlips 4 Take out the piston bolt 5 Dismantle the gudgeon pin bearing 6 Dismantle the four screws of the crankhouse cover 7 Take off the cover 8015 021 8015 034 8015 022 ...

Page 32: ...ling the cylinder and crankshaft 1 Mount the crankshaft with mounting tool 502 50 30 16 2 Slip the sleeve over the crankshaft Screw down the screws on the crankshaft until they stop Turn the nut clockwise while holding down the screw 3 Mount a new gasket on the crankshaft cover Check that the guide bushings are in place 8015 023 502 51 61 01 8015 024 502 50 30 16 8015 025 ...

Page 33: ...ton should always point towards the exhaust side Press the gudgeon pin in and seat the gudgeon pin bearing and circlips 6 Seat a new cylinder foot gasket The gasket can only be mounted in one direction 7 Use cylinder ring tool 502 50 70 01 which holds the piston rings while assembling the cylinder 8015 022 8015 026 8015 027 502 50 70 01 ...

Page 34: ...e crankshaft 10 Use piston stop tool 502 54 15 01 to prevent piston rotation 11 Tighten the centre nut with 22 24 Nm of torque 12 Mount the starter hooks with the accompanying spring Check that the starter hooks move freely 13 Place the motor package and fan spiral according to Assembling the motor package and fan spiral on page 28 8015 021 8015 018 502 54 15 01 8015 020 ...

Page 35: ... Dismount the spring 3 Dismount the throttle 4 Dismount the short circuit cables 5 Dismount the throttle cable 7 8 2 Assembling the handle 1 Mount the throttle cable 2 Mount the short circuit cables 3 Mount the throttle 4 Mount the spring 5 Mount the three screws of the handle 8015 028 8015 029 8015 029 ...

Page 36: ...36 7 Repairs ...

Page 37: ...nting the filter in the machine Never use ordinary motor oil It will sink through the filter quickly and lie on the bottom 8 2 Fuel handling If the machine is not used for a long period of time the fuel tank should be emptied and cleaned Ask your local petrol station where excess fuel can be drained 8 3 Cleaning the drain hose Remove the hose between the exhaust system and the resonance tube Clean...

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